Bajuk-Bogdanović, Danica V.

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Authority KeyName Variants
orcid::0000-0003-2443-376X
  • Bajuk-Bogdanović, Danica V. (31)
Projects
Lithium-ion batteries and fuel cells - research and development Electroconducting and redox-active polymers and oligomers: synthesis, structure, properties and applications
Physics and Chemistry with Ion Beams Thin films of single wall carbon nanotubes and graphene for electronic application
Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine Strengthening of the MagBioVin Research and Innovation Team for Development of Novel Approaches for Tumour Therapy based on Nanostructured Materials
Nanostructured multifunctional materials and nanocomposites SASPRO - Mobility Programme of Slovak Academy of Sciences: Supportive Fund for Excellent Scientists
Modulation of antioxidative metabolism in plants for improvement of plant abiotic stress tolerance and identification of new biomarkers for application in remediation and monitoring of degraded biotopes Zero- to Three-Dimensional Nanostructures for Application in Electronics and Renewable Energy Sources: Synthesis, Characterization and Processing
Magnetic and radionuclide labeled nanostructured materials for medical applications Serbian Academy of Sciences and Arts ("Electrocatalysis in the contemporary processes of energy conversion")
A. von Humboldt Foundation COST Action [CM1206]
ERDF through COMPETE - Programa Operacional Competitividade e Internacionalizacao (POCI) [POCI-01-0145-FEDER-006984] European Community [228637 NIM NIL]
FCT - Fundacao para a Ciencia e a Tecnologia [SFRH/BD/95411/2013] German Federal Ministry of Education and Research [IWINDOR 040]
Physics of Ordered Nanostructures and New Materials in Photonics Physical processes in the synthesis of advanced nanostructured materials
Physics of nanostructured oxide materials and strongly correlated systems Oxide-based environmentally-friendly porous materials for genotoxic substances removal
Studies of enzyme interactions with toxic and pharmacologically active molecules Study of structure-function relationships in the plant cell wall and modifications of the wall structure by enzyme engineering
Urbanisation Processes and Development of Mediaeval Society Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes
Optoelectronics nanodimension systems - the rout towards applications Functional, Functionalized and Advanced Nanomaterials
Fabrication and characterization of nano-photonic functional structrues in biomedicine and informatics Novel encapsulation and enzyme technologies for designing of new biocatalysts and biologically active compounds targeting enhancement of food quality, safety and competitiveness

Author's Bibliography

Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid

Mravik, Željko; Bajuk-Bogdanović, Danica V.; Mraković, Ana Đ.; Vukosavljević, Ljubiša; Trajić, Ivan; Kovač, Janez; Peruško, Davor; Gavrilov, Nemanja; Jovanović, Zoran M.

(2021)

TY  - JOUR
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Mraković, Ana Đ.
AU  - Vukosavljević, Ljubiša
AU  - Trajić, Ivan
AU  - Kovač, Janez
AU  - Peruško, Davor
AU  - Gavrilov, Nemanja
AU  - Jovanović, Zoran M.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9150
AB  - In recent years polyoxometalates (POMs) have attracted significant research interest due to versatile properties. These properties are determined by the size, structure and elemental composition of POMs and hence play an important role in their application. In the present study, the ion beam irradiation (10 keV C+ ions, 5 × 1014–2.5 × 1015 ions/cm2) has been utilized for modification of physicochemical properties of 120 nm-thick layer of 12-tungstophosphoric acid (WPA). Scanning electron microscopy analysis of irradiated films showed change of morphology i.e. an increase of WPA grain size with irradiation and coalescence of grains at the highest fluence. This was accompanied by structural changes. Attenuated total reflectance Fourier transform infrared analysis revealed that vibration bands of Keggin anion became less pronounced as fluence increased, while Raman spectra appeared as strongly modified. The effect of irradiation with 1.25 × 1015 ions/cm2 on the structure of WPA was similar to the effect of thermal treatment at 600 °C. Irradiation of WPA led to decrease of the band gap (from 4.07 to 3.92 eV), which was correlated to transformation Keggin anions into a network of WO6 octahedra and PO4 tetrahedra. This is in line with increased number of W=Od bonds observed by UV–Visible diffuse reflectance spectroscopy. Beside transformation to bronzes a reduction of WPA was observed by X-ray Photoelectron Spectroscopy (shift to lower binding energy) and Raman methods, whereas the Raman spectra of irradiated samples were similar to heteropoly blue. The electrochemical properties of irradiated WPA were also assessed. Cyclic voltammetry measurements showed that at up to 1.25 × 1015 ions/cm2 lithiation capacity of WPA increases and activity for hydrogen evolution reaction (HER) improves. The highest fluence caused interconnection of WO6 octahedra, closing of lithiation pathways and decrease in the number of active sites for HER. Our results provide a novel insight into the effects of ion beam irradiation on WPA and demonstrate high potential for tuning of physicochemical properties of POMs that are relevant in wide range of applications. © 2021 Elsevier Ltd
T2  - Radiation Physics and Chemistry
T1  - Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid
VL  - 183
SP  - 109422
DO  - 10.1016/j.radphyschem.2021.109422
ER  - 
@article{
author = "Mravik, Željko and Bajuk-Bogdanović, Danica V. and Mraković, Ana Đ. and Vukosavljević, Ljubiša and Trajić, Ivan and Kovač, Janez and Peruško, Davor and Gavrilov, Nemanja and Jovanović, Zoran M.",
year = "2021",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9150",
abstract = "In recent years polyoxometalates (POMs) have attracted significant research interest due to versatile properties. These properties are determined by the size, structure and elemental composition of POMs and hence play an important role in their application. In the present study, the ion beam irradiation (10 keV C+ ions, 5 × 1014–2.5 × 1015 ions/cm2) has been utilized for modification of physicochemical properties of 120 nm-thick layer of 12-tungstophosphoric acid (WPA). Scanning electron microscopy analysis of irradiated films showed change of morphology i.e. an increase of WPA grain size with irradiation and coalescence of grains at the highest fluence. This was accompanied by structural changes. Attenuated total reflectance Fourier transform infrared analysis revealed that vibration bands of Keggin anion became less pronounced as fluence increased, while Raman spectra appeared as strongly modified. The effect of irradiation with 1.25 × 1015 ions/cm2 on the structure of WPA was similar to the effect of thermal treatment at 600 °C. Irradiation of WPA led to decrease of the band gap (from 4.07 to 3.92 eV), which was correlated to transformation Keggin anions into a network of WO6 octahedra and PO4 tetrahedra. This is in line with increased number of W=Od bonds observed by UV–Visible diffuse reflectance spectroscopy. Beside transformation to bronzes a reduction of WPA was observed by X-ray Photoelectron Spectroscopy (shift to lower binding energy) and Raman methods, whereas the Raman spectra of irradiated samples were similar to heteropoly blue. The electrochemical properties of irradiated WPA were also assessed. Cyclic voltammetry measurements showed that at up to 1.25 × 1015 ions/cm2 lithiation capacity of WPA increases and activity for hydrogen evolution reaction (HER) improves. The highest fluence caused interconnection of WO6 octahedra, closing of lithiation pathways and decrease in the number of active sites for HER. Our results provide a novel insight into the effects of ion beam irradiation on WPA and demonstrate high potential for tuning of physicochemical properties of POMs that are relevant in wide range of applications. © 2021 Elsevier Ltd",
journal = "Radiation Physics and Chemistry",
title = "Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid",
volume = "183",
pages = "109422",
doi = "10.1016/j.radphyschem.2021.109422"
}
Mravik, Ž., Bajuk-Bogdanović, D. V., Mraković, A. Đ., Vukosavljević, L., Trajić, I., Kovač, J., Peruško, D., Gavrilov, N.,& Jovanović, Z. M. (2021). Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid.
Radiation Physics and Chemistry, 183, 109422.
https://doi.org/10.1016/j.radphyschem.2021.109422
Mravik Ž, Bajuk-Bogdanović DV, Mraković AĐ, Vukosavljević L, Trajić I, Kovač J, Peruško D, Gavrilov N, Jovanović ZM. Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid. Radiation Physics and Chemistry. 2021;183:109422
Mravik Željko, Bajuk-Bogdanović Danica V., Mraković Ana Đ., Vukosavljević Ljubiša, Trajić Ivan, Kovač Janez, Peruško Davor, Gavrilov Nemanja, Jovanović Zoran M., "Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid" Radiation Physics and Chemistry, 183 (2021):109422,
https://doi.org/10.1016/j.radphyschem.2021.109422 .

Self-limiting interactions in 2D–0D systems: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite

Jovanović, Zoran M.; Mravik, Željko; Bajuk-Bogdanović, Danica V.; Jovanović, Sonja; Marković, Smilja; Vujković, Milica; Kovač, Janez; Vengust, Damjan; Uskoković-Marković, Snežana; Holclajtner-Antunović, Ivanka D.

(2020)

TY  - JOUR
AU  - Jovanović, Zoran M.
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Jovanović, Sonja
AU  - Marković, Smilja
AU  - Vujković, Milica
AU  - Kovač, Janez
AU  - Vengust, Damjan
AU  - Uskoković-Marković, Snežana
AU  - Holclajtner-Antunović, Ivanka D.
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8520
AB  - In the present study we investigated the interaction between 12-tungstophosphoric acid (WPA) and graphene oxide (GO) in their nanocomposite by utilizing the loading of WPA as an intrinsic parameter for interaction tuning. The Fourier-transform infrared spectroscopy, temperature-programmed desorption, X-ray photoelectron spectroscopy, zeta-potential measurements, thermogravimetric analysis, X-ray diffraction, Raman spectroscopy and transmission electron microscopy methods revealed that ∼5–13 wt% of WPA represents critical loading that separates two distinct contributions to GO-WPA interaction. This was explained by the self-limiting nature of GO-WPA interaction, initially controlled by high dispersion of WPA on GO (up to 13 wt%), that is eventually overpowered by WPA-WPA interaction as loading increases. As a result, the WPA agglomerates are being formed because of which the hybrid character of the nanocomposite diminishes, i.e., the properties of independent components start to be manifested to greater extent. The obtained results provide an important framework for considering possible outcomes in other 2D-0D systems, whose interaction is relevant both from fundamental and applicative point of view. Thus, the GO/WPA nanocomposite illustrates how the interactions between the components can be used for tuning the properties of nanocomposite as a whole. © 2019 Elsevier Ltd
T2  - Carbon
T1  - Self-limiting interactions in 2D–0D systems: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite
VL  - 156
SP  - 166
EP  - 178
DO  - 10.1016/j.carbon.2019.09.072
ER  - 
@article{
author = "Jovanović, Zoran M. and Mravik, Željko and Bajuk-Bogdanović, Danica V. and Jovanović, Sonja and Marković, Smilja and Vujković, Milica and Kovač, Janez and Vengust, Damjan and Uskoković-Marković, Snežana and Holclajtner-Antunović, Ivanka D.",
year = "2020",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8520",
abstract = "In the present study we investigated the interaction between 12-tungstophosphoric acid (WPA) and graphene oxide (GO) in their nanocomposite by utilizing the loading of WPA as an intrinsic parameter for interaction tuning. The Fourier-transform infrared spectroscopy, temperature-programmed desorption, X-ray photoelectron spectroscopy, zeta-potential measurements, thermogravimetric analysis, X-ray diffraction, Raman spectroscopy and transmission electron microscopy methods revealed that ∼5–13 wt% of WPA represents critical loading that separates two distinct contributions to GO-WPA interaction. This was explained by the self-limiting nature of GO-WPA interaction, initially controlled by high dispersion of WPA on GO (up to 13 wt%), that is eventually overpowered by WPA-WPA interaction as loading increases. As a result, the WPA agglomerates are being formed because of which the hybrid character of the nanocomposite diminishes, i.e., the properties of independent components start to be manifested to greater extent. The obtained results provide an important framework for considering possible outcomes in other 2D-0D systems, whose interaction is relevant both from fundamental and applicative point of view. Thus, the GO/WPA nanocomposite illustrates how the interactions between the components can be used for tuning the properties of nanocomposite as a whole. © 2019 Elsevier Ltd",
journal = "Carbon",
title = "Self-limiting interactions in 2D–0D systems: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite",
volume = "156",
pages = "166-178",
doi = "10.1016/j.carbon.2019.09.072"
}
Jovanović, Z. M., Mravik, Ž., Bajuk-Bogdanović, D. V., Jovanović, S., Marković, S., Vujković, M., Kovač, J., Vengust, D., Uskoković-Marković, S.,& Holclajtner-Antunović, I. D. (2020). Self-limiting interactions in 2D–0D systems: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite.
Carbon, 156, 166-178.
https://doi.org/10.1016/j.carbon.2019.09.072
Jovanović ZM, Mravik Ž, Bajuk-Bogdanović DV, Jovanović S, Marković S, Vujković M, Kovač J, Vengust D, Uskoković-Marković S, Holclajtner-Antunović ID. Self-limiting interactions in 2D–0D systems: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite. Carbon. 2020;156:166-178
Jovanović Zoran M., Mravik Željko, Bajuk-Bogdanović Danica V., Jovanović Sonja, Marković Smilja, Vujković Milica, Kovač Janez, Vengust Damjan, Uskoković-Marković Snežana, Holclajtner-Antunović Ivanka D., "Self-limiting interactions in 2D–0D systems: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite" Carbon, 156 (2020):166-178,
https://doi.org/10.1016/j.carbon.2019.09.072 .
3
3

The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites

Kuzmanović, Bojana; Vujković, Milica; Tomić, Nataša M.; Bajuk-Bogdanović, Danica V.; Lazović, Vladimir M.; Šljukić, Biljana; Ivanović, Nenad; Mentus, Slavko V.

(2019)

TY  - JOUR
AU  - Kuzmanović, Bojana
AU  - Vujković, Milica
AU  - Tomić, Nataša M.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Lazović, Vladimir M.
AU  - Šljukić, Biljana
AU  - Ivanović, Nenad
AU  - Mentus, Slavko V.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0013468619305584
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8135
AB  - Cerium oxide (CeO 2-δ ) ultrafine nanoparticles, with the lower (CeO 2-δ -HT) and higher (CeO 2-δ -SS) fraction of oxygen vacancies, were used as anchoring sites for the polymerization of aniline in acidic medium. As a result, polyaniline-emeraldine salt (PANI-ES)-based composites (PANI-ES@CeO 2-δ -HT and PANI-ES@CeO 2-δ -SS) were obtained. The interaction between CeO 2-δ and PANI was examined by FTIR and Raman spectroscopy. The PANI polymerization is initiated via electrostatic interaction of anilinium cation and Cl − ions (adsorbed at the protonated hydroxyl groups of CeO 2-δ ), and proceeds with hydrogen and nitrogen interaction with oxide nanoparticles. Tailoring the oxygen vacancy population of oxide offers the possibility to control the type of PANI-cerium oxide interaction, and consequently structural, electrical, thermal, electronic and charge storage properties of composite. A high capacitance of synthesized materials, reaching ∼294 F g −1 (PANI-ES), ∼299 F g −1 (PANI-ES@CeO 2-δ -HT) and ∼314 F g −1 (PANI-ES@CeO 2-δ -SS), was measured in 1 M HCl, at a common scan rate of 20 mV s −1 . The high adhesion of PANI with cerium oxide prevents the oxide from its slow dissolution in 1MHCl thus providing the stability of this composite in an acidic solution. The rate of electrochemical oxidation of emeraldine salt into pernigraniline was also found to depend on CeO 2-δ characteristics. © 2019 Elsevier Ltd
T2  - Electrochimica Acta
T1  - The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites
VL  - 306
SP  - 506
EP  - 515
DO  - 10.1016/j.electacta.2019.03.135
ER  - 
@article{
author = "Kuzmanović, Bojana and Vujković, Milica and Tomić, Nataša M. and Bajuk-Bogdanović, Danica V. and Lazović, Vladimir M. and Šljukić, Biljana and Ivanović, Nenad and Mentus, Slavko V.",
year = "2019",
url = "https://linkinghub.elsevier.com/retrieve/pii/S0013468619305584, http://vinar.vin.bg.ac.rs/handle/123456789/8135",
abstract = "Cerium oxide (CeO 2-δ ) ultrafine nanoparticles, with the lower (CeO 2-δ -HT) and higher (CeO 2-δ -SS) fraction of oxygen vacancies, were used as anchoring sites for the polymerization of aniline in acidic medium. As a result, polyaniline-emeraldine salt (PANI-ES)-based composites (PANI-ES@CeO 2-δ -HT and PANI-ES@CeO 2-δ -SS) were obtained. The interaction between CeO 2-δ and PANI was examined by FTIR and Raman spectroscopy. The PANI polymerization is initiated via electrostatic interaction of anilinium cation and Cl − ions (adsorbed at the protonated hydroxyl groups of CeO 2-δ ), and proceeds with hydrogen and nitrogen interaction with oxide nanoparticles. Tailoring the oxygen vacancy population of oxide offers the possibility to control the type of PANI-cerium oxide interaction, and consequently structural, electrical, thermal, electronic and charge storage properties of composite. A high capacitance of synthesized materials, reaching ∼294 F g −1 (PANI-ES), ∼299 F g −1 (PANI-ES@CeO 2-δ -HT) and ∼314 F g −1 (PANI-ES@CeO 2-δ -SS), was measured in 1 M HCl, at a common scan rate of 20 mV s −1 . The high adhesion of PANI with cerium oxide prevents the oxide from its slow dissolution in 1MHCl thus providing the stability of this composite in an acidic solution. The rate of electrochemical oxidation of emeraldine salt into pernigraniline was also found to depend on CeO 2-δ characteristics. © 2019 Elsevier Ltd",
journal = "Electrochimica Acta",
title = "The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites",
volume = "306",
pages = "506-515",
doi = "10.1016/j.electacta.2019.03.135"
}
Kuzmanović, B., Vujković, M., Tomić, N. M., Bajuk-Bogdanović, D. V., Lazović, V. M., Šljukić, B., Ivanović, N.,& Mentus, S. V. (2019). The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites.
Electrochimica Acta, 306, 506-515.
https://doi.org/10.1016/j.electacta.2019.03.135
Kuzmanović B, Vujković M, Tomić NM, Bajuk-Bogdanović DV, Lazović VM, Šljukić B, Ivanović N, Mentus SV. The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites. Electrochimica Acta. 2019;306:506-515
Kuzmanović Bojana, Vujković Milica, Tomić Nataša M., Bajuk-Bogdanović Danica V., Lazović Vladimir M., Šljukić Biljana, Ivanović Nenad, Mentus Slavko V., "The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites" Electrochimica Acta, 306 (2019):506-515,
https://doi.org/10.1016/j.electacta.2019.03.135 .
4
2
3

Biliverdin-copper complex at physiological pH

Dimitrijević, Milena S.; Bogdanović-Pristov, Jelena; Žižić, Milan; Stanković, Dalibor M.; Bajuk-Bogdanović, Danica V.; Stanić, Marina; Spasić, Snežana D.; Hagen, Wilfred; Spasojević, Ivan

(2019)

TY  - JOUR
AU  - Dimitrijević, Milena S.
AU  - Bogdanović-Pristov, Jelena
AU  - Žižić, Milan
AU  - Stanković, Dalibor M.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Stanić, Marina
AU  - Spasić, Snežana D.
AU  - Hagen, Wilfred
AU  - Spasojević, Ivan
PY  - 2019
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3066
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8200
AB  - Biliverdin (BV), a product of heme catabolism, is known to interact with transition metals, but the details of such interactions under physiological conditions are scarce. Herein, we examined coordinate/redox interactions of BV with Cu2+ in phosphate buffer at pH 7.4, using spectrophotometry, HESI-MS, Raman spectroscopy, 1 H NMR, EPR, fluorimetry, and electrochemical methods. BV formed a stable coordination complex with copper in 1 : 1 stoichiometry. The structure of BV was more planar and energetically stable in the complex. The complex showed strong paramagnetic effects that were attributed to an unpaired delocalized e−. The delocalized electron may come from BV or Cu2+, so the complex is formally composed either of BV radical cation and Cu1+ or of BV radical anion and Cu3+. The complex underwent oxidation only in the presence of both O2 and an excess of Cu2+, or a strong oxidizing agent, and it was resistant to reducing agents. The biological effects of the stable BV metallocomplex containing a delocalized unpaired electron should be further examined, and may provide an answer to the long-standing question of high energy investment in the catabolism of BV, which represents a relatively harmless molecule per se.
T2  - Dalton Transactions
T1  - Biliverdin-copper complex at physiological pH
VL  - 48
IS  - 18
SP  - 6061
EP  - 6070
DO  - 10.1039/c8dt04724c
ER  - 
@article{
author = "Dimitrijević, Milena S. and Bogdanović-Pristov, Jelena and Žižić, Milan and Stanković, Dalibor M. and Bajuk-Bogdanović, Danica V. and Stanić, Marina and Spasić, Snežana D. and Hagen, Wilfred and Spasojević, Ivan",
year = "2019",
url = "http://cherry.chem.bg.ac.rs/handle/123456789/3066, http://vinar.vin.bg.ac.rs/handle/123456789/8200",
abstract = "Biliverdin (BV), a product of heme catabolism, is known to interact with transition metals, but the details of such interactions under physiological conditions are scarce. Herein, we examined coordinate/redox interactions of BV with Cu2+ in phosphate buffer at pH 7.4, using spectrophotometry, HESI-MS, Raman spectroscopy, 1 H NMR, EPR, fluorimetry, and electrochemical methods. BV formed a stable coordination complex with copper in 1 : 1 stoichiometry. The structure of BV was more planar and energetically stable in the complex. The complex showed strong paramagnetic effects that were attributed to an unpaired delocalized e−. The delocalized electron may come from BV or Cu2+, so the complex is formally composed either of BV radical cation and Cu1+ or of BV radical anion and Cu3+. The complex underwent oxidation only in the presence of both O2 and an excess of Cu2+, or a strong oxidizing agent, and it was resistant to reducing agents. The biological effects of the stable BV metallocomplex containing a delocalized unpaired electron should be further examined, and may provide an answer to the long-standing question of high energy investment in the catabolism of BV, which represents a relatively harmless molecule per se.",
journal = "Dalton Transactions",
title = "Biliverdin-copper complex at physiological pH",
volume = "48",
number = "18",
pages = "6061-6070",
doi = "10.1039/c8dt04724c"
}
Dimitrijević, M. S., Bogdanović-Pristov, J., Žižić, M., Stanković, D. M., Bajuk-Bogdanović, D. V., Stanić, M., Spasić, S. D., Hagen, W.,& Spasojević, I. (2019). Biliverdin-copper complex at physiological pH.
Dalton Transactions, 48(18), 6061-6070.
https://doi.org/10.1039/c8dt04724c
Dimitrijević MS, Bogdanović-Pristov J, Žižić M, Stanković DM, Bajuk-Bogdanović DV, Stanić M, Spasić SD, Hagen W, Spasojević I. Biliverdin-copper complex at physiological pH. Dalton Transactions. 2019;48(18):6061-6070
Dimitrijević Milena S., Bogdanović-Pristov Jelena, Žižić Milan, Stanković Dalibor M., Bajuk-Bogdanović Danica V., Stanić Marina, Spasić Snežana D., Hagen Wilfred, Spasojević Ivan, "Biliverdin-copper complex at physiological pH" Dalton Transactions, 48, no. 18 (2019):6061-6070,
https://doi.org/10.1039/c8dt04724c .
7
6
6

Green and facile microwave assisted synthesis of (metal-free) N-doped carbon quantum dots for catalytic applications

Prekodravac, Jovana; Vasiljević, Bojana; Marković, Zoran M.; Jovanović, Dragana J.; Kleut, Duška; Špitalsky, Zdenko; Mičušik, Matej; Danko, Martin; Bajuk-Bogdanović, Danica V.; Todorović–Marković, Biljana

(2019)

TY  - JOUR
AU  - Prekodravac, Jovana
AU  - Vasiljević, Bojana
AU  - Marković, Zoran M.
AU  - Jovanović, Dragana J.
AU  - Kleut, Duška
AU  - Špitalsky, Zdenko
AU  - Mičušik, Matej
AU  - Danko, Martin
AU  - Bajuk-Bogdanović, Danica V.
AU  - Todorović–Marković, Biljana
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0272884219313598
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8211
AB  - Industrialization today leads to a significant increase in the environmental pollution, with number of phenols, pesticides, paints, solvents and other organic pollutants with potentially carcinogenic effect in natural resources. Investigation of some new semiconductor materials and their photocatalytic properties for removal of pollutants is a challenging work. However, limited usage of photoactive materials still requires the testing of new materials with photoactive properties. The current work introduces the swift and easy approach for synthesis of (metal–free) N–doped carbon quantum dots in water using microwave reactor. Synthesis was performed from glucose water solution by heating in microwave reactor for only 1 min, at low temperature and applied microwave power. The synthesized N–doped carbon quantum dots show remarkable photocatalytic activity for removal of toxic organic dye (Rose Bengal) under visible light irradiation. Almost 93% of the dye degradation is achieved after only 30 min of radiation. The uninspected result, that the pH of the medium has a significant effect on the performance of the synthesized material in the presence of organic dye, indicates that dots show dual behavior. In the neutral and basic conditions, they have the ability to degrade organic dye, whereas, by shifting the medium pH into acidic medium, they form a stable conjugate with Rose Bengal. © 2019 Elsevier Ltd and Techna Group S.r.l.
T2  - Ceramics International
T1  - Green and facile microwave assisted synthesis of (metal-free) N-doped carbon quantum dots for catalytic applications
VL  - 45
IS  - 14
SP  - 17006
EP  - 17013
DO  - 10.1016/j.ceramint.2019.05.250
ER  - 
@article{
author = "Prekodravac, Jovana and Vasiljević, Bojana and Marković, Zoran M. and Jovanović, Dragana J. and Kleut, Duška and Špitalsky, Zdenko and Mičušik, Matej and Danko, Martin and Bajuk-Bogdanović, Danica V. and Todorović–Marković, Biljana",
year = "2019",
url = "https://linkinghub.elsevier.com/retrieve/pii/S0272884219313598, http://vinar.vin.bg.ac.rs/handle/123456789/8211",
abstract = "Industrialization today leads to a significant increase in the environmental pollution, with number of phenols, pesticides, paints, solvents and other organic pollutants with potentially carcinogenic effect in natural resources. Investigation of some new semiconductor materials and their photocatalytic properties for removal of pollutants is a challenging work. However, limited usage of photoactive materials still requires the testing of new materials with photoactive properties. The current work introduces the swift and easy approach for synthesis of (metal–free) N–doped carbon quantum dots in water using microwave reactor. Synthesis was performed from glucose water solution by heating in microwave reactor for only 1 min, at low temperature and applied microwave power. The synthesized N–doped carbon quantum dots show remarkable photocatalytic activity for removal of toxic organic dye (Rose Bengal) under visible light irradiation. Almost 93% of the dye degradation is achieved after only 30 min of radiation. The uninspected result, that the pH of the medium has a significant effect on the performance of the synthesized material in the presence of organic dye, indicates that dots show dual behavior. In the neutral and basic conditions, they have the ability to degrade organic dye, whereas, by shifting the medium pH into acidic medium, they form a stable conjugate with Rose Bengal. © 2019 Elsevier Ltd and Techna Group S.r.l.",
journal = "Ceramics International",
title = "Green and facile microwave assisted synthesis of (metal-free) N-doped carbon quantum dots for catalytic applications",
volume = "45",
number = "14",
pages = "17006-17013",
doi = "10.1016/j.ceramint.2019.05.250"
}
Prekodravac, J., Vasiljević, B., Marković, Z. M., Jovanović, D. J., Kleut, D., Špitalsky, Z., Mičušik, M., Danko, M., Bajuk-Bogdanović, D. V.,& Todorović–Marković, B. (2019). Green and facile microwave assisted synthesis of (metal-free) N-doped carbon quantum dots for catalytic applications.
Ceramics International, 45(14), 17006-17013.
https://doi.org/10.1016/j.ceramint.2019.05.250
Prekodravac J, Vasiljević B, Marković ZM, Jovanović DJ, Kleut D, Špitalsky Z, Mičušik M, Danko M, Bajuk-Bogdanović DV, Todorović–Marković B. Green and facile microwave assisted synthesis of (metal-free) N-doped carbon quantum dots for catalytic applications. Ceramics International. 2019;45(14):17006-17013
Prekodravac Jovana, Vasiljević Bojana, Marković Zoran M., Jovanović Dragana J., Kleut Duška, Špitalsky Zdenko, Mičušik Matej, Danko Martin, Bajuk-Bogdanović Danica V., Todorović–Marković Biljana, "Green and facile microwave assisted synthesis of (metal-free) N-doped carbon quantum dots for catalytic applications" Ceramics International, 45, no. 14 (2019):17006-17013,
https://doi.org/10.1016/j.ceramint.2019.05.250 .
13
7
10

In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal

Vasiljević-Nedić, Bojana; Obradović, Milena; Bajuk-Bogdanović, Danica V.; Milojević-Rakić, Maja; Jovanović, Zoran M.; Gavrilov, Nemanja M.; Holclajtner-Antunović, Ivanka D.

(2019)

TY  - JOUR
AU  - Vasiljević-Nedić, Bojana
AU  - Obradović, Milena
AU  - Bajuk-Bogdanović, Danica V.
AU  - Milojević-Rakić, Maja
AU  - Jovanović, Zoran M.
AU  - Gavrilov, Nemanja M.
AU  - Holclajtner-Antunović, Ivanka D.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S1001074218314682
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8217
AB  - Potassium tungstophosphate is supported on BEA zeolite by in situ synthesis for glyphosate removal. Spectroscopic measurements identified hydrogen bonding as a primal interaction of potassium salt and BEA zeolite. Composites are evaluated for glyphosate herbicide removal and adsorption process is analyzed using two isotherm models. Obtained adsorption capacities for all prepared composites lay between 45.2 and 92.2 mg of glyphosate per gram of investigated composite. Suspension acidity revealed that glyphosate is adsorbed mainly in the zwitter-ion form at the composite surface while the amount of potassium salt in the composites is crucial for the adsorption application. Exceptional adsorption behavior is postulated to come from a high degree of homogeneity among surface active sites which is confirmed by different experimental methods. Temperature programmed desorption of glyphosate coupled with mass spectrometer detected one broad, high-temperature peak which represents overlapped desorption processes from active sights of similar strength. Introduction of potassium tungstophosphate affects active sites present in BEA zeolite for glyphosate desorption and significantly increases the amount of adsorbed pesticide in comparison to BEA zeolite. Supporting of potassium tungstophosphate on BEA zeolite via in situ synthesis procedure enables the formation of highly efficient adsorbents and revealed their perspective environmental application. © 2019
T2  - Journal of Environmental Sciences
T1  - In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal
VL  - 81
SP  - 136
EP  - 147
DO  - 10.1016/j.jes.2019.01.018
ER  - 
@article{
author = "Vasiljević-Nedić, Bojana and Obradović, Milena and Bajuk-Bogdanović, Danica V. and Milojević-Rakić, Maja and Jovanović, Zoran M. and Gavrilov, Nemanja M. and Holclajtner-Antunović, Ivanka D.",
year = "2019",
url = "https://linkinghub.elsevier.com/retrieve/pii/S1001074218314682, http://vinar.vin.bg.ac.rs/handle/123456789/8217",
abstract = "Potassium tungstophosphate is supported on BEA zeolite by in situ synthesis for glyphosate removal. Spectroscopic measurements identified hydrogen bonding as a primal interaction of potassium salt and BEA zeolite. Composites are evaluated for glyphosate herbicide removal and adsorption process is analyzed using two isotherm models. Obtained adsorption capacities for all prepared composites lay between 45.2 and 92.2 mg of glyphosate per gram of investigated composite. Suspension acidity revealed that glyphosate is adsorbed mainly in the zwitter-ion form at the composite surface while the amount of potassium salt in the composites is crucial for the adsorption application. Exceptional adsorption behavior is postulated to come from a high degree of homogeneity among surface active sites which is confirmed by different experimental methods. Temperature programmed desorption of glyphosate coupled with mass spectrometer detected one broad, high-temperature peak which represents overlapped desorption processes from active sights of similar strength. Introduction of potassium tungstophosphate affects active sites present in BEA zeolite for glyphosate desorption and significantly increases the amount of adsorbed pesticide in comparison to BEA zeolite. Supporting of potassium tungstophosphate on BEA zeolite via in situ synthesis procedure enables the formation of highly efficient adsorbents and revealed their perspective environmental application. © 2019",
journal = "Journal of Environmental Sciences",
title = "In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal",
volume = "81",
pages = "136-147",
doi = "10.1016/j.jes.2019.01.018"
}
Vasiljević-Nedić, B., Obradović, M., Bajuk-Bogdanović, D. V., Milojević-Rakić, M., Jovanović, Z. M., Gavrilov, N. M.,& Holclajtner-Antunović, I. D. (2019). In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal.
Journal of Environmental Sciences, 81, 136-147.
https://doi.org/10.1016/j.jes.2019.01.018
Vasiljević-Nedić B, Obradović M, Bajuk-Bogdanović DV, Milojević-Rakić M, Jovanović ZM, Gavrilov NM, Holclajtner-Antunović ID. In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal. Journal of Environmental Sciences. 2019;81:136-147
Vasiljević-Nedić Bojana, Obradović Milena, Bajuk-Bogdanović Danica V., Milojević-Rakić Maja, Jovanović Zoran M., Gavrilov Nemanja M., Holclajtner-Antunović Ivanka D., "In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal" Journal of Environmental Sciences, 81 (2019):136-147,
https://doi.org/10.1016/j.jes.2019.01.018 .
9
8
9

Biliverdin-copper complex at physiological pH

Dimitrijević, Milena S.; Bogdanović-Pristov, Jelena; Žižić, Milan; Stanković, Dalibor M.; Bajuk-Bogdanović, Danica V.; Stanić, Marina; Spasić, Snežana D.; Hagen, Wilfred; Spasojević, Ivan

(2019)

TY  - JOUR
AU  - Dimitrijević, Milena S.
AU  - Bogdanović-Pristov, Jelena
AU  - Žižić, Milan
AU  - Stanković, Dalibor M.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Stanić, Marina
AU  - Spasić, Snežana D.
AU  - Hagen, Wilfred
AU  - Spasojević, Ivan
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8258
AB  - Biliverdin (BV), a product of heme catabolism, is known to interact with transition metals, but the details of such interactions under physiological conditions are scarce. Herein, we examined coordinate/redox interactions of BV with Cu2+ in phosphate buffer at pH 7.4, using spectrophotometry, HESI-MS, Raman spectroscopy, 1 H NMR, EPR, fluorimetry, and electrochemical methods. BV formed a stable coordination complex with copper in 1 : 1 stoichiometry. The structure of BV was more planar and energetically stable in the complex. The complex showed strong paramagnetic effects that were attributed to an unpaired delocalized e−. The delocalized electron may come from BV or Cu2+, so the complex is formally composed either of BV radical cation and Cu1+ or of BV radical anion and Cu3+. The complex underwent oxidation only in the presence of both O2 and an excess of Cu2+, or a strong oxidizing agent, and it was resistant to reducing agents. The biological effects of the stable BV metallocomplex containing a delocalized unpaired electron should be further examined, and may provide an answer to the long-standing question of high energy investment in the catabolism of BV, which represents a relatively harmless molecule per se.
T2  - Dalton Transactions
T1  - Biliverdin-copper complex at physiological pH
VL  - 48
IS  - 18
SP  - 6061
EP  - 6070
DO  - 10.1039/c8dt04724c
ER  - 
@article{
author = "Dimitrijević, Milena S. and Bogdanović-Pristov, Jelena and Žižić, Milan and Stanković, Dalibor M. and Bajuk-Bogdanović, Danica V. and Stanić, Marina and Spasić, Snežana D. and Hagen, Wilfred and Spasojević, Ivan",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8258",
abstract = "Biliverdin (BV), a product of heme catabolism, is known to interact with transition metals, but the details of such interactions under physiological conditions are scarce. Herein, we examined coordinate/redox interactions of BV with Cu2+ in phosphate buffer at pH 7.4, using spectrophotometry, HESI-MS, Raman spectroscopy, 1 H NMR, EPR, fluorimetry, and electrochemical methods. BV formed a stable coordination complex with copper in 1 : 1 stoichiometry. The structure of BV was more planar and energetically stable in the complex. The complex showed strong paramagnetic effects that were attributed to an unpaired delocalized e−. The delocalized electron may come from BV or Cu2+, so the complex is formally composed either of BV radical cation and Cu1+ or of BV radical anion and Cu3+. The complex underwent oxidation only in the presence of both O2 and an excess of Cu2+, or a strong oxidizing agent, and it was resistant to reducing agents. The biological effects of the stable BV metallocomplex containing a delocalized unpaired electron should be further examined, and may provide an answer to the long-standing question of high energy investment in the catabolism of BV, which represents a relatively harmless molecule per se.",
journal = "Dalton Transactions",
title = "Biliverdin-copper complex at physiological pH",
volume = "48",
number = "18",
pages = "6061-6070",
doi = "10.1039/c8dt04724c"
}
Dimitrijević, M. S., Bogdanović-Pristov, J., Žižić, M., Stanković, D. M., Bajuk-Bogdanović, D. V., Stanić, M., Spasić, S. D., Hagen, W.,& Spasojević, I. (2019). Biliverdin-copper complex at physiological pH.
Dalton Transactions, 48(18), 6061-6070.
https://doi.org/10.1039/c8dt04724c
Dimitrijević MS, Bogdanović-Pristov J, Žižić M, Stanković DM, Bajuk-Bogdanović DV, Stanić M, Spasić SD, Hagen W, Spasojević I. Biliverdin-copper complex at physiological pH. Dalton Transactions. 2019;48(18):6061-6070
Dimitrijević Milena S., Bogdanović-Pristov Jelena, Žižić Milan, Stanković Dalibor M., Bajuk-Bogdanović Danica V., Stanić Marina, Spasić Snežana D., Hagen Wilfred, Spasojević Ivan, "Biliverdin-copper complex at physiological pH" Dalton Transactions, 48, no. 18 (2019):6061-6070,
https://doi.org/10.1039/c8dt04724c .
7
6
6

Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?

Bajuk-Bogdanović, Danica V.; Holclajtner-Antunović, Ivanka D.; Jovanović, Zoran M.; Mravik, Željko; Krstić, Jugoslav B.; Uskoković-Marković, Snežana; Vujković, Milica

(2019)

TY  - JOUR
AU  - Bajuk-Bogdanović, Danica V.
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Jovanović, Zoran M.
AU  - Mravik, Željko
AU  - Krstić, Jugoslav B.
AU  - Uskoković-Marković, Snežana
AU  - Vujković, Milica
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8500
AB  - The synergistic effects between two Keggin-type heteropoly acids (HPAs) and carbon surface were examined and elucidated. An improved high rate capability (and potential high capacitor electrode for supercapacitors) of the hybrid materials, obtained by anchoring of α-dodecamolybdophosphoric (MoPA), α-dodecatungstophosphoric (WPA), and their mixture to activated carbon (AC), was achieved through the different mechanism of interaction. In order to elaborate this, a detailed analysis of AC-HPA composites has been performed by scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) analysis, temperature-programmed desorption (TPD), Fourier-transform infrared spectroscopy (FTIR), micro Raman spectroscopy, and zeta potential measurements. The zeta potential measurements revealed positive charge of carbon surface thus indicating attractive interactions with negatively charged Keggin anion. The surface analysis has shown that WPA spontaneously reduces the carbon surface, while interaction with MoPA leads to its oxidation. As the consequence of the tailoring of the functional groups at carbon surface through HPAs’ action, the distortion of cyclic voltammograms (CVs) decreased in the following order: AC-MoPA, AC-MoPA-WPA, and AC-WPA. A prominent rectangular shape of AC-WPA, even at an extremely high scan rate of 400 mVs−1, was measured, which is rarely demonstrated for carbon-based composites. By applying the theory of electrode potentials, the HPA-AC synergistic effect was explained and discussed in terms of charge storage improvement of HPA-modified carbon. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - Journal of Solid State Electrochemistry
T1  - Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?
VL  - 23
IS  - 9
SP  - 2747
EP  - 2758
DO  - 10.1007/s10008-019-04369-4
ER  - 
@article{
author = "Bajuk-Bogdanović, Danica V. and Holclajtner-Antunović, Ivanka D. and Jovanović, Zoran M. and Mravik, Željko and Krstić, Jugoslav B. and Uskoković-Marković, Snežana and Vujković, Milica",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8500",
abstract = "The synergistic effects between two Keggin-type heteropoly acids (HPAs) and carbon surface were examined and elucidated. An improved high rate capability (and potential high capacitor electrode for supercapacitors) of the hybrid materials, obtained by anchoring of α-dodecamolybdophosphoric (MoPA), α-dodecatungstophosphoric (WPA), and their mixture to activated carbon (AC), was achieved through the different mechanism of interaction. In order to elaborate this, a detailed analysis of AC-HPA composites has been performed by scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) analysis, temperature-programmed desorption (TPD), Fourier-transform infrared spectroscopy (FTIR), micro Raman spectroscopy, and zeta potential measurements. The zeta potential measurements revealed positive charge of carbon surface thus indicating attractive interactions with negatively charged Keggin anion. The surface analysis has shown that WPA spontaneously reduces the carbon surface, while interaction with MoPA leads to its oxidation. As the consequence of the tailoring of the functional groups at carbon surface through HPAs’ action, the distortion of cyclic voltammograms (CVs) decreased in the following order: AC-MoPA, AC-MoPA-WPA, and AC-WPA. A prominent rectangular shape of AC-WPA, even at an extremely high scan rate of 400 mVs−1, was measured, which is rarely demonstrated for carbon-based composites. By applying the theory of electrode potentials, the HPA-AC synergistic effect was explained and discussed in terms of charge storage improvement of HPA-modified carbon. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "Journal of Solid State Electrochemistry",
title = "Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?",
volume = "23",
number = "9",
pages = "2747-2758",
doi = "10.1007/s10008-019-04369-4"
}
Bajuk-Bogdanović, D. V., Holclajtner-Antunović, I. D., Jovanović, Z. M., Mravik, Ž., Krstić, J. B., Uskoković-Marković, S.,& Vujković, M. (2019). Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?.
Journal of Solid State Electrochemistry, 23(9), 2747-2758.
https://doi.org/10.1007/s10008-019-04369-4
Bajuk-Bogdanović DV, Holclajtner-Antunović ID, Jovanović ZM, Mravik Ž, Krstić JB, Uskoković-Marković S, Vujković M. Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?. Journal of Solid State Electrochemistry. 2019;23(9):2747-2758
Bajuk-Bogdanović Danica V., Holclajtner-Antunović Ivanka D., Jovanović Zoran M., Mravik Željko, Krstić Jugoslav B., Uskoković-Marković Snežana, Vujković Milica, "Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?" Journal of Solid State Electrochemistry, 23, no. 9 (2019):2747-2758,
https://doi.org/10.1007/s10008-019-04369-4 .
1
1
1

Coordinate and redox interactions of epinephrine with ferric and ferrous iron at physiological pH

Korać, Jelena; Stanković, Dalibor M.; Stanić, Marina; Bajuk-Bogdanović, Danica V.; Žižić, Milan; Bogdanović-Pristov, Jelena; Grgurić-Šipka, Sanja; Popović-Bijelić, Ana D.; Spasojević, Ivan

(2018)

TY  - JOUR
AU  - Korać, Jelena
AU  - Stanković, Dalibor M.
AU  - Stanić, Marina
AU  - Bajuk-Bogdanović, Danica V.
AU  - Žižić, Milan
AU  - Bogdanović-Pristov, Jelena
AU  - Grgurić-Šipka, Sanja
AU  - Popović-Bijelić, Ana D.
AU  - Spasojević, Ivan
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7582
AB  - Coordinate and redox interactions of epinephrine (Epi) with iron at physiological pH are essential for understanding two very different phenomena - the detrimental effects of chronic stress on the cardiovascular system and the cross-linking of catecholamine-rich biopolymers and frameworks. Here we show that Epi and Fe3+ form stable high-spin complexes in the 1:1 or 3:1 stoichiometry, depending on the Epi/Fe3+ concentration ratio (low or high). Oxygen atoms on the catechol ring represent the sites of coordinate bond formation within physiologically relevant bidentate 1:1 complex. Redox properties of Epi are slightly impacted by Fe3+. On the other hand, Epi and Fe2+ form a complex that acts as a strong reducing agent, which leads to the production of hydrogen peroxide via O-2 reduction, and to a facilitated formation of the Epi-Fe3+ complexes. Epi is not oxidized in this process, i.e. Fe2+ is not an electron shuttle, but the electron donor. Epi-catalyzed oxidation of Fe2+ represents a plausible chemical basis of stress-related damage to heart cells. In addition, our results support the previous findings on the interactions of catecholamine moieties in polymers with iron and provide a novel strategy for improving the efficiency of cross-linking.
T2  - Scientific Reports
T1  - Coordinate and redox interactions of epinephrine with ferric and ferrous iron at physiological pH
VL  - 8
SP  - 3530
DO  - 10.1038/s41598-018-21940-7
ER  - 
@article{
author = "Korać, Jelena and Stanković, Dalibor M. and Stanić, Marina and Bajuk-Bogdanović, Danica V. and Žižić, Milan and Bogdanović-Pristov, Jelena and Grgurić-Šipka, Sanja and Popović-Bijelić, Ana D. and Spasojević, Ivan",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7582",
abstract = "Coordinate and redox interactions of epinephrine (Epi) with iron at physiological pH are essential for understanding two very different phenomena - the detrimental effects of chronic stress on the cardiovascular system and the cross-linking of catecholamine-rich biopolymers and frameworks. Here we show that Epi and Fe3+ form stable high-spin complexes in the 1:1 or 3:1 stoichiometry, depending on the Epi/Fe3+ concentration ratio (low or high). Oxygen atoms on the catechol ring represent the sites of coordinate bond formation within physiologically relevant bidentate 1:1 complex. Redox properties of Epi are slightly impacted by Fe3+. On the other hand, Epi and Fe2+ form a complex that acts as a strong reducing agent, which leads to the production of hydrogen peroxide via O-2 reduction, and to a facilitated formation of the Epi-Fe3+ complexes. Epi is not oxidized in this process, i.e. Fe2+ is not an electron shuttle, but the electron donor. Epi-catalyzed oxidation of Fe2+ represents a plausible chemical basis of stress-related damage to heart cells. In addition, our results support the previous findings on the interactions of catecholamine moieties in polymers with iron and provide a novel strategy for improving the efficiency of cross-linking.",
journal = "Scientific Reports",
title = "Coordinate and redox interactions of epinephrine with ferric and ferrous iron at physiological pH",
volume = "8",
pages = "3530",
doi = "10.1038/s41598-018-21940-7"
}
Korać, J., Stanković, D. M., Stanić, M., Bajuk-Bogdanović, D. V., Žižić, M., Bogdanović-Pristov, J., Grgurić-Šipka, S., Popović-Bijelić, A. D.,& Spasojević, I. (2018). Coordinate and redox interactions of epinephrine with ferric and ferrous iron at physiological pH.
Scientific Reports, 8, 3530.
https://doi.org/10.1038/s41598-018-21940-7
Korać J, Stanković DM, Stanić M, Bajuk-Bogdanović DV, Žižić M, Bogdanović-Pristov J, Grgurić-Šipka S, Popović-Bijelić AD, Spasojević I. Coordinate and redox interactions of epinephrine with ferric and ferrous iron at physiological pH. Scientific Reports. 2018;8:3530
Korać Jelena, Stanković Dalibor M., Stanić Marina, Bajuk-Bogdanović Danica V., Žižić Milan, Bogdanović-Pristov Jelena, Grgurić-Šipka Sanja, Popović-Bijelić Ana D., Spasojević Ivan, "Coordinate and redox interactions of epinephrine with ferric and ferrous iron at physiological pH" Scientific Reports, 8 (2018):3530,
https://doi.org/10.1038/s41598-018-21940-7 .
1
7
5
5

Modification of graphene oxide surfaces with 12-molybdophosphoric acid: Structural and antibacterial study

Jovanović, Svetlana P.; Holclajtner-Antunović, Ivanka D.; Uskoković-Marković, Snežana; Bajuk-Bogdanović, Danica V.; Pavlović, Vladimir B.; Tošić, Dragana; Milenković, Marina; Todorović-Marković, Biljana

(2018)

TY  - JOUR
AU  - Jovanović, Svetlana P.
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Uskoković-Marković, Snežana
AU  - Bajuk-Bogdanović, Danica V.
AU  - Pavlović, Vladimir B.
AU  - Tošić, Dragana
AU  - Milenković, Marina
AU  - Todorović-Marković, Biljana
PY  - 2018
UR  - http://linkinghub.elsevier.com/retrieve/pii/S0254058418302736
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7611
AB  - © 2018 Antibacterial properties of graphene oxide (GO) have been studied extensively in the last few years, while for polyoxometalates there are just a few researches. Herein, we prepared nanocomposites of GO and different amounts of 12-molybdophosphoric acid (MoPA) and analyzed their antibacterial activity and both structural and morphological properties. In nanocomposites with higher amounts of MoPA, graphene sheets were significantly changed with disrupted flat, graphene-like morphology of GO. In the nanocomposites with low MoPA content, flat GO morphology was preserved. Additionally, structural analyses showed some changes in symmetry of the Keggin anion as a consequence of interactions between GO and MoPA, the increase in structural disorder and the lowering of electron density in GO structure due to interaction with MoPA. We have studied antibacterial properties on the gram-positive: Staphylococcus aureus, Staphylococcus epidermidis, Bacillus subtilis; and the gram-negative bacteria: Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa and Salmonella abony. Only a mild antibacterial effect of GO and nanocomposites with low amount of MoPA against Bacillus subtilis was observed, while the rest of analyzed materials did not show any antibacterial activity.
T2  - Materials Chemistry and Physics
T1  - Modification of graphene oxide surfaces with 12-molybdophosphoric acid: Structural and antibacterial study
VL  - 213
SP  - 157
EP  - 167
DO  - 10.1016/j.matchemphys.2018.04.011
ER  - 
@article{
author = "Jovanović, Svetlana P. and Holclajtner-Antunović, Ivanka D. and Uskoković-Marković, Snežana and Bajuk-Bogdanović, Danica V. and Pavlović, Vladimir B. and Tošić, Dragana and Milenković, Marina and Todorović-Marković, Biljana",
year = "2018",
url = "http://linkinghub.elsevier.com/retrieve/pii/S0254058418302736, http://vinar.vin.bg.ac.rs/handle/123456789/7611",
abstract = "© 2018 Antibacterial properties of graphene oxide (GO) have been studied extensively in the last few years, while for polyoxometalates there are just a few researches. Herein, we prepared nanocomposites of GO and different amounts of 12-molybdophosphoric acid (MoPA) and analyzed their antibacterial activity and both structural and morphological properties. In nanocomposites with higher amounts of MoPA, graphene sheets were significantly changed with disrupted flat, graphene-like morphology of GO. In the nanocomposites with low MoPA content, flat GO morphology was preserved. Additionally, structural analyses showed some changes in symmetry of the Keggin anion as a consequence of interactions between GO and MoPA, the increase in structural disorder and the lowering of electron density in GO structure due to interaction with MoPA. We have studied antibacterial properties on the gram-positive: Staphylococcus aureus, Staphylococcus epidermidis, Bacillus subtilis; and the gram-negative bacteria: Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa and Salmonella abony. Only a mild antibacterial effect of GO and nanocomposites with low amount of MoPA against Bacillus subtilis was observed, while the rest of analyzed materials did not show any antibacterial activity.",
journal = "Materials Chemistry and Physics",
title = "Modification of graphene oxide surfaces with 12-molybdophosphoric acid: Structural and antibacterial study",
volume = "213",
pages = "157-167",
doi = "10.1016/j.matchemphys.2018.04.011"
}
Jovanović, S. P., Holclajtner-Antunović, I. D., Uskoković-Marković, S., Bajuk-Bogdanović, D. V., Pavlović, V. B., Tošić, D., Milenković, M.,& Todorović-Marković, B. (2018). Modification of graphene oxide surfaces with 12-molybdophosphoric acid: Structural and antibacterial study.
Materials Chemistry and Physics, 213, 157-167.
https://doi.org/10.1016/j.matchemphys.2018.04.011
Jovanović SP, Holclajtner-Antunović ID, Uskoković-Marković S, Bajuk-Bogdanović DV, Pavlović VB, Tošić D, Milenković M, Todorović-Marković B. Modification of graphene oxide surfaces with 12-molybdophosphoric acid: Structural and antibacterial study. Materials Chemistry and Physics. 2018;213:157-167
Jovanović Svetlana P., Holclajtner-Antunović Ivanka D., Uskoković-Marković Snežana, Bajuk-Bogdanović Danica V., Pavlović Vladimir B., Tošić Dragana, Milenković Marina, Todorović-Marković Biljana, "Modification of graphene oxide surfaces with 12-molybdophosphoric acid: Structural and antibacterial study" Materials Chemistry and Physics, 213 (2018):157-167,
https://doi.org/10.1016/j.matchemphys.2018.04.011 .
7
6
7

Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction

Zdolšek, Nikola; Dimitrijević, Aleksandra; Bendova, Magdalena; Krstić, Jugoslav B.; Rocha, Raquel P.; Figueiredo, Jose L.; Bajuk-Bogdanović, Danica V.; Trtić-Petrović, Tatjana M.; Šljukić, Biljana

(2018)

TY  - JOUR
AU  - Zdolšek, Nikola
AU  - Dimitrijević, Aleksandra
AU  - Bendova, Magdalena
AU  - Krstić, Jugoslav B.
AU  - Rocha, Raquel P.
AU  - Figueiredo, Jose L.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Trtić-Petrović, Tatjana M.
AU  - Šljukić, Biljana
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7672
AB  - Carbon materials, prepared by using different methods with ionicliquids, are compared as electrocatalysts for the oxygen reductionreaction (ORR). Materials were synthesized through the hydrothermalcarbonization of glucose and by using the same method in the presence of1-butyl-3-methylimidazolium methanesulfonate {[}bmim]{[}MeSO3] as anadditive. Another two carbon-based materials were prepared by usingionic-liquid-based methods: ionothermal carbonization of glucose using{[}bmim]{[}MeSO3] as a recyclable medium for the carbonization reactionand by direct carbonization of the ionic liquid in a one-step methodusing {[}bmim]{[}MeSO3] as the precursor for N- and S-doped porouscarbon (Carb-IL). Characterization results showed the possibility ofmorphology and porosity control by using {[}bmim]{[}MeSO3]. Allmaterials were subsequently tested for the ORR in alkaline media.Carb-IL showed enhanced and stable electrocatalytic ORR activity, evenin the presence of methanol, ethanol, and borohydride, opening thepossibility for its application in fuel cells.
T2  - ChemElectroChem
T1  - Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction
VL  - 5
IS  - 7
SP  - 1037
EP  - 1046
DO  - 10.1002/celc.201701369
ER  - 
@article{
author = "Zdolšek, Nikola and Dimitrijević, Aleksandra and Bendova, Magdalena and Krstić, Jugoslav B. and Rocha, Raquel P. and Figueiredo, Jose L. and Bajuk-Bogdanović, Danica V. and Trtić-Petrović, Tatjana M. and Šljukić, Biljana",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7672",
abstract = "Carbon materials, prepared by using different methods with ionicliquids, are compared as electrocatalysts for the oxygen reductionreaction (ORR). Materials were synthesized through the hydrothermalcarbonization of glucose and by using the same method in the presence of1-butyl-3-methylimidazolium methanesulfonate {[}bmim]{[}MeSO3] as anadditive. Another two carbon-based materials were prepared by usingionic-liquid-based methods: ionothermal carbonization of glucose using{[}bmim]{[}MeSO3] as a recyclable medium for the carbonization reactionand by direct carbonization of the ionic liquid in a one-step methodusing {[}bmim]{[}MeSO3] as the precursor for N- and S-doped porouscarbon (Carb-IL). Characterization results showed the possibility ofmorphology and porosity control by using {[}bmim]{[}MeSO3]. Allmaterials were subsequently tested for the ORR in alkaline media.Carb-IL showed enhanced and stable electrocatalytic ORR activity, evenin the presence of methanol, ethanol, and borohydride, opening thepossibility for its application in fuel cells.",
journal = "ChemElectroChem",
title = "Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction",
volume = "5",
number = "7",
pages = "1037-1046",
doi = "10.1002/celc.201701369"
}
Zdolšek, N., Dimitrijević, A., Bendova, M., Krstić, J. B., Rocha, R. P., Figueiredo, J. L., Bajuk-Bogdanović, D. V., Trtić-Petrović, T. M.,& Šljukić, B. (2018). Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction.
ChemElectroChem, 5(7), 1037-1046.
https://doi.org/10.1002/celc.201701369
Zdolšek N, Dimitrijević A, Bendova M, Krstić JB, Rocha RP, Figueiredo JL, Bajuk-Bogdanović DV, Trtić-Petrović TM, Šljukić B. Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction. ChemElectroChem. 2018;5(7):1037-1046
Zdolšek Nikola, Dimitrijević Aleksandra, Bendova Magdalena, Krstić Jugoslav B., Rocha Raquel P., Figueiredo Jose L., Bajuk-Bogdanović Danica V., Trtić-Petrović Tatjana M., Šljukić Biljana, "Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction" ChemElectroChem, 5, no. 7 (2018):1037-1046,
https://doi.org/10.1002/celc.201701369 .
1
13
12
14

Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions

Vujković, Milica; Bajuk-Bogdanović, Danica V.; Matović, Ljiljana; Stojmenović, Marija; Mentus, Slavko V.

(2018)

TY  - JOUR
AU  - Vujković, Milica
AU  - Bajuk-Bogdanović, Danica V.
AU  - Matović, Ljiljana
AU  - Stojmenović, Marija
AU  - Mentus, Slavko V.
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0008622318307036
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7872
AB  - Coulombic capacity of zeolite-templated carbon (ZTC) measured in alkaline solution was roughly doubled by a previous potentiodynamic treatment in sulfuric acidic solution. In order to explain the reasons of this capacity improvement, the changes in chemical composition of ZTC surface during its pretreatment in sulfuric acid either by simple immersion, or by potentiodynamic polarization, and during subsequent potentiodynamic polarization in KOH solutions, were studied by means of TG/DTA, FTIR spectroscopy and Raman spectroscopy. The results of this study open some novel insights in understanding of very peculiar carbon electrochemistry. The observed changes in surface chemistry include i) fast adsorption of H2O and formation of OH− and epoxide groups on immersion in sulfuric acid, ii) the multiplication of concentration of H2O/OH− and epoxide groups during potentiodynamic cycling in sulfuric acid and iii) the ring-opening of epoxide groups (formed during potentiodynamic cycling in acidic solution) upon its potentiodynamic cycling in alkaline solution, according to a SN2 type mechanism, which results in the formation of aromatic OH-containing diol compounds. © 2018 Elsevier Ltd
T2  - Carbon
T1  - Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions
VL  - 138
SP  - 369
EP  - 378
DO  - 10.1016/j.carbon.2018.07.053
ER  - 
@article{
author = "Vujković, Milica and Bajuk-Bogdanović, Danica V. and Matović, Ljiljana and Stojmenović, Marija and Mentus, Slavko V.",
year = "2018",
url = "https://linkinghub.elsevier.com/retrieve/pii/S0008622318307036, http://vinar.vin.bg.ac.rs/handle/123456789/7872",
abstract = "Coulombic capacity of zeolite-templated carbon (ZTC) measured in alkaline solution was roughly doubled by a previous potentiodynamic treatment in sulfuric acidic solution. In order to explain the reasons of this capacity improvement, the changes in chemical composition of ZTC surface during its pretreatment in sulfuric acid either by simple immersion, or by potentiodynamic polarization, and during subsequent potentiodynamic polarization in KOH solutions, were studied by means of TG/DTA, FTIR spectroscopy and Raman spectroscopy. The results of this study open some novel insights in understanding of very peculiar carbon electrochemistry. The observed changes in surface chemistry include i) fast adsorption of H2O and formation of OH− and epoxide groups on immersion in sulfuric acid, ii) the multiplication of concentration of H2O/OH− and epoxide groups during potentiodynamic cycling in sulfuric acid and iii) the ring-opening of epoxide groups (formed during potentiodynamic cycling in acidic solution) upon its potentiodynamic cycling in alkaline solution, according to a SN2 type mechanism, which results in the formation of aromatic OH-containing diol compounds. © 2018 Elsevier Ltd",
journal = "Carbon",
title = "Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions",
volume = "138",
pages = "369-378",
doi = "10.1016/j.carbon.2018.07.053"
}
Vujković, M., Bajuk-Bogdanović, D. V., Matović, L., Stojmenović, M.,& Mentus, S. V. (2018). Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions.
Carbon, 138, 369-378.
https://doi.org/10.1016/j.carbon.2018.07.053
Vujković M, Bajuk-Bogdanović DV, Matović L, Stojmenović M, Mentus SV. Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions. Carbon. 2018;138:369-378
Vujković Milica, Bajuk-Bogdanović Danica V., Matović Ljiljana, Stojmenović Marija, Mentus Slavko V., "Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions" Carbon, 138 (2018):369-378,
https://doi.org/10.1016/j.carbon.2018.07.053 .
6
7
7

Electrochemical tuning of capacitive response of graphene oxide

Gutić, Sanjin J.; Kozlica, Dževad K.; Korać, Fehim; Bajuk-Bogdanović, Danica V.; Mitrić, Miodrag; Mirsky, Vladimir M.; Mentus, Slavko V.; Pašti, Igor A.

(2018)

TY  - JOUR
AU  - Gutić, Sanjin J.
AU  - Kozlica, Dževad K.
AU  - Korać, Fehim
AU  - Bajuk-Bogdanović, Danica V.
AU  - Mitrić, Miodrag
AU  - Mirsky, Vladimir M.
AU  - Mentus, Slavko V.
AU  - Pašti, Igor A.
PY  - 2018
UR  - http://xlink.rsc.org/?DOI=C8CP03631D
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7877
AB  - The increasing energy demands of modern society require a deep understanding of the properties of energy storage materials, as well as the tuning of their performance. We show that the capacitance of graphene oxide (GO) can be precisely tuned using a simple electrochemical reduction route. In situ resistance measurements, in combination with cyclic voltammetry measurements and Raman spectroscopy, have shown that upon reduction GO is irreversibly deoxygenated, which is further accompanied by structural ordering and an increase in electrical conductivity. The capacitance is maximized when the concentration of oxygen functional groups is properly balanced with the conductivity. Any further reduction and deoxygenation leads to a gradual loss of capacitance. The observed trend is independent of the preparation route and the exact chemical and structural properties of GO. It is proposed that an improvement in the capacitive properties of any GO can be achieved by optimization of its reduction conditions.
T2  - Physical Chemistry Chemical Physics
T1  - Electrochemical tuning of capacitive response of graphene oxide
VL  - 20
IS  - 35
SP  - 22698
EP  - 22709
DO  - 10.1039/C8CP03631D
ER  - 
@article{
author = "Gutić, Sanjin J. and Kozlica, Dževad K. and Korać, Fehim and Bajuk-Bogdanović, Danica V. and Mitrić, Miodrag and Mirsky, Vladimir M. and Mentus, Slavko V. and Pašti, Igor A.",
year = "2018",
url = "http://xlink.rsc.org/?DOI=C8CP03631D, http://vinar.vin.bg.ac.rs/handle/123456789/7877",
abstract = "The increasing energy demands of modern society require a deep understanding of the properties of energy storage materials, as well as the tuning of their performance. We show that the capacitance of graphene oxide (GO) can be precisely tuned using a simple electrochemical reduction route. In situ resistance measurements, in combination with cyclic voltammetry measurements and Raman spectroscopy, have shown that upon reduction GO is irreversibly deoxygenated, which is further accompanied by structural ordering and an increase in electrical conductivity. The capacitance is maximized when the concentration of oxygen functional groups is properly balanced with the conductivity. Any further reduction and deoxygenation leads to a gradual loss of capacitance. The observed trend is independent of the preparation route and the exact chemical and structural properties of GO. It is proposed that an improvement in the capacitive properties of any GO can be achieved by optimization of its reduction conditions.",
journal = "Physical Chemistry Chemical Physics",
title = "Electrochemical tuning of capacitive response of graphene oxide",
volume = "20",
number = "35",
pages = "22698-22709",
doi = "10.1039/C8CP03631D"
}
Gutić, S. J., Kozlica, D. K., Korać, F., Bajuk-Bogdanović, D. V., Mitrić, M., Mirsky, V. M., Mentus, S. V.,& Pašti, I. A. (2018). Electrochemical tuning of capacitive response of graphene oxide.
Physical Chemistry Chemical Physics, 20(35), 22698-22709.
https://doi.org/10.1039/C8CP03631D
Gutić SJ, Kozlica DK, Korać F, Bajuk-Bogdanović DV, Mitrić M, Mirsky VM, Mentus SV, Pašti IA. Electrochemical tuning of capacitive response of graphene oxide. Physical Chemistry Chemical Physics. 2018;20(35):22698-22709
Gutić Sanjin J., Kozlica Dževad K., Korać Fehim, Bajuk-Bogdanović Danica V., Mitrić Miodrag, Mirsky Vladimir M., Mentus Slavko V., Pašti Igor A., "Electrochemical tuning of capacitive response of graphene oxide" Physical Chemistry Chemical Physics, 20, no. 35 (2018):22698-22709,
https://doi.org/10.1039/C8CP03631D .
1
6
6
7

Electrochemical tuning of capacitive response of graphene oxide

Gutić, Sanjin J.; Kozlica, Dževad K.; Korać, Fehim; Bajuk-Bogdanović, Danica V.; Mitrić, Miodrag; Mirsky, Vladimir M.; Mentus, Slavko V.; Pašti, Igor A.

(2018)

TY  - JOUR
AU  - Gutić, Sanjin J.
AU  - Kozlica, Dževad K.
AU  - Korać, Fehim
AU  - Bajuk-Bogdanović, Danica V.
AU  - Mitrić, Miodrag
AU  - Mirsky, Vladimir M.
AU  - Mentus, Slavko V.
AU  - Pašti, Igor A.
PY  - 2018
UR  - http://xlink.rsc.org/?DOI=C8CP03631D
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7887
AB  - The increasing energy demands of modern society require a deep understanding of the properties of energy storage materials, as well as the tuning of their performance. We show that the capacitance of graphene oxide (GO) can be precisely tuned using a simple electrochemical reduction route. In situ resistance measurements, in combination with cyclic voltammetry measurements and Raman spectroscopy, have shown that upon reduction GO is irreversibly deoxygenated, which is further accompanied by structural ordering and an increase in electrical conductivity. The capacitance is maximized when the concentration of oxygen functional groups is properly balanced with the conductivity. Any further reduction and deoxygenation leads to a gradual loss of capacitance. The observed trend is independent of the preparation route and the exact chemical and structural properties of GO. It is proposed that an improvement in the capacitive properties of any GO can be achieved by optimization of its reduction conditions.
T2  - Physical Chemistry Chemical Physics
T1  - Electrochemical tuning of capacitive response of graphene oxide
VL  - 20
IS  - 35
SP  - 22698
EP  - 22709
DO  - 10.1039/C8CP03631D
ER  - 
@article{
author = "Gutić, Sanjin J. and Kozlica, Dževad K. and Korać, Fehim and Bajuk-Bogdanović, Danica V. and Mitrić, Miodrag and Mirsky, Vladimir M. and Mentus, Slavko V. and Pašti, Igor A.",
year = "2018",
url = "http://xlink.rsc.org/?DOI=C8CP03631D, http://vinar.vin.bg.ac.rs/handle/123456789/7887",
abstract = "The increasing energy demands of modern society require a deep understanding of the properties of energy storage materials, as well as the tuning of their performance. We show that the capacitance of graphene oxide (GO) can be precisely tuned using a simple electrochemical reduction route. In situ resistance measurements, in combination with cyclic voltammetry measurements and Raman spectroscopy, have shown that upon reduction GO is irreversibly deoxygenated, which is further accompanied by structural ordering and an increase in electrical conductivity. The capacitance is maximized when the concentration of oxygen functional groups is properly balanced with the conductivity. Any further reduction and deoxygenation leads to a gradual loss of capacitance. The observed trend is independent of the preparation route and the exact chemical and structural properties of GO. It is proposed that an improvement in the capacitive properties of any GO can be achieved by optimization of its reduction conditions.",
journal = "Physical Chemistry Chemical Physics",
title = "Electrochemical tuning of capacitive response of graphene oxide",
volume = "20",
number = "35",
pages = "22698-22709",
doi = "10.1039/C8CP03631D"
}
Gutić, S. J., Kozlica, D. K., Korać, F., Bajuk-Bogdanović, D. V., Mitrić, M., Mirsky, V. M., Mentus, S. V.,& Pašti, I. A. (2018). Electrochemical tuning of capacitive response of graphene oxide.
Physical Chemistry Chemical Physics, 20(35), 22698-22709.
https://doi.org/10.1039/C8CP03631D
Gutić SJ, Kozlica DK, Korać F, Bajuk-Bogdanović DV, Mitrić M, Mirsky VM, Mentus SV, Pašti IA. Electrochemical tuning of capacitive response of graphene oxide. Physical Chemistry Chemical Physics. 2018;20(35):22698-22709
Gutić Sanjin J., Kozlica Dževad K., Korać Fehim, Bajuk-Bogdanović Danica V., Mitrić Miodrag, Mirsky Vladimir M., Mentus Slavko V., Pašti Igor A., "Electrochemical tuning of capacitive response of graphene oxide" Physical Chemistry Chemical Physics, 20, no. 35 (2018):22698-22709,
https://doi.org/10.1039/C8CP03631D .
1
6
6
7

Effect of thermal treatment on the charge storage properties of graphene oxide/12-tungstophosphoric acid nanocomposite

Jovanović, Zoran M.; Holclajtner-Antunović, Ivanka D.; Bajuk-Bogdanović, Danica V.; Jovanović, Sonja; Mravik, Željko; Vujković, Milica

(2017)

TY  - JOUR
AU  - Jovanović, Zoran M.
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Jovanović, Sonja
AU  - Mravik, Željko
AU  - Vujković, Milica
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1737
AB  - The influence of thermal treatment in an inert atmosphere on the charge storage properties of graphene oxide (GO)/12-tungstophosphoric acid (WPA) nanocomposite was examined. The transmission electron microscopy analysis revealed high dispersion of WPA on GO matrix, while the surface analysis showed thermal activation of structural changes of WPA and desorption of oxygen functional groups from GO and GO/WPA nanocomposite. Initial GO/WPA nanocomposite had approximately two times higher capacitance compared to initial GO. The thermal treatment of initial GO and GO/WPA to 500 degrees C induced twofold increase of capacitance of GO and 40% increase of GO/WPA, accompanied with significant increase of operating voltage compared to GO (for 300 mV). Above 500 degrees C, a decrease of capacitance of both GO and GO/WPA was observed. The results suggest that understanding of structural changes of components and their interaction is crucial for improvement of electrochemical properties of considered composite.
T2  - Electrochemistry Communications
T1  - Effect of thermal treatment on the charge storage properties of graphene oxide/12-tungstophosphoric acid nanocomposite
VL  - 83
SP  - 36
EP  - 40
DO  - 10.1016/j.elecom.2017.08.017
ER  - 
@article{
author = "Jovanović, Zoran M. and Holclajtner-Antunović, Ivanka D. and Bajuk-Bogdanović, Danica V. and Jovanović, Sonja and Mravik, Željko and Vujković, Milica",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1737",
abstract = "The influence of thermal treatment in an inert atmosphere on the charge storage properties of graphene oxide (GO)/12-tungstophosphoric acid (WPA) nanocomposite was examined. The transmission electron microscopy analysis revealed high dispersion of WPA on GO matrix, while the surface analysis showed thermal activation of structural changes of WPA and desorption of oxygen functional groups from GO and GO/WPA nanocomposite. Initial GO/WPA nanocomposite had approximately two times higher capacitance compared to initial GO. The thermal treatment of initial GO and GO/WPA to 500 degrees C induced twofold increase of capacitance of GO and 40% increase of GO/WPA, accompanied with significant increase of operating voltage compared to GO (for 300 mV). Above 500 degrees C, a decrease of capacitance of both GO and GO/WPA was observed. The results suggest that understanding of structural changes of components and their interaction is crucial for improvement of electrochemical properties of considered composite.",
journal = "Electrochemistry Communications",
title = "Effect of thermal treatment on the charge storage properties of graphene oxide/12-tungstophosphoric acid nanocomposite",
volume = "83",
pages = "36-40",
doi = "10.1016/j.elecom.2017.08.017"
}
Jovanović, Z. M., Holclajtner-Antunović, I. D., Bajuk-Bogdanović, D. V., Jovanović, S., Mravik, Ž.,& Vujković, M. (2017). Effect of thermal treatment on the charge storage properties of graphene oxide/12-tungstophosphoric acid nanocomposite.
Electrochemistry Communications, 83, 36-40.
https://doi.org/10.1016/j.elecom.2017.08.017
Jovanović ZM, Holclajtner-Antunović ID, Bajuk-Bogdanović DV, Jovanović S, Mravik Ž, Vujković M. Effect of thermal treatment on the charge storage properties of graphene oxide/12-tungstophosphoric acid nanocomposite. Electrochemistry Communications. 2017;83:36-40
Jovanović Zoran M., Holclajtner-Antunović Ivanka D., Bajuk-Bogdanović Danica V., Jovanović Sonja, Mravik Željko, Vujković Milica, "Effect of thermal treatment on the charge storage properties of graphene oxide/12-tungstophosphoric acid nanocomposite" Electrochemistry Communications, 83 (2017):36-40,
https://doi.org/10.1016/j.elecom.2017.08.017 .
9
8
8

The synthesis of Li(Co-Mn-Ni)O-2 cathode material from spent-Li ion batteries and the proof of its functionality in aqueous lithium and sodium electrolytic solutions

Senćanski, Jelena; Bajuk-Bogdanović, Danica V.; Majstorović, Divna M.; Tchernychova, Elena; Papan, Jelena; Vujković, Milica

(2017)

TY  - JOUR
AU  - Senćanski, Jelena
AU  - Bajuk-Bogdanović, Danica V.
AU  - Majstorović, Divna M.
AU  - Tchernychova, Elena
AU  - Papan, Jelena
AU  - Vujković, Milica
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1457
AB  - Several spent Li-ion batteries were manually dismantled and their components were uncurled and separated. The chemical composition of each batterys component was determined by atomic absorption spectroscopy. Among several ways to separate cathode material from the collector, the alkali dissolution treatment was selected as the most effective one. After both complete separation and acid leaching steps, the co-precipitation method, followed by a thermal treatment (700 degrees C or 850 degrees C), was used to resynthesize cathode material LiCo0.415Mn0.435Ni0.15O2. Its structure and morphology were characterized by XRD, Raman spectroscopy and SEM-EDS methods. The electrochemical behavior of recycled cathode materials was examined by cyclic voltammetry and chronopotentiometry in both LiNO3 and NaNO3 aqueous solutions. High sodium storage capacity, amounting to 93 mAh g(-1), was measured galvanostatically at a relatively high current of 100 mA g(-1). Initial lithium intercalation capacity of 64 mAh was determined potentiodynamically at very high scan rate of 20 mV s(-1) (similar to 40 C). Somewhat lower initial capacity of 30 mAh g(-1), but much lower capacity fade on cycling, was found for sodium intercalation at the same scan rate. The differences in the Li and Na charge storage capability were explained in terms of ion rearrangement during charging/discharging processes. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Journal of Power Sources
T1  - The synthesis of Li(Co-Mn-Ni)O-2 cathode material from spent-Li ion batteries and the proof of its functionality in aqueous lithium and sodium electrolytic solutions
VL  - 342
SP  - 690
EP  - 703
DO  - 10.1016/j.jpowsour.2016.12.115
ER  - 
@article{
author = "Senćanski, Jelena and Bajuk-Bogdanović, Danica V. and Majstorović, Divna M. and Tchernychova, Elena and Papan, Jelena and Vujković, Milica",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1457",
abstract = "Several spent Li-ion batteries were manually dismantled and their components were uncurled and separated. The chemical composition of each batterys component was determined by atomic absorption spectroscopy. Among several ways to separate cathode material from the collector, the alkali dissolution treatment was selected as the most effective one. After both complete separation and acid leaching steps, the co-precipitation method, followed by a thermal treatment (700 degrees C or 850 degrees C), was used to resynthesize cathode material LiCo0.415Mn0.435Ni0.15O2. Its structure and morphology were characterized by XRD, Raman spectroscopy and SEM-EDS methods. The electrochemical behavior of recycled cathode materials was examined by cyclic voltammetry and chronopotentiometry in both LiNO3 and NaNO3 aqueous solutions. High sodium storage capacity, amounting to 93 mAh g(-1), was measured galvanostatically at a relatively high current of 100 mA g(-1). Initial lithium intercalation capacity of 64 mAh was determined potentiodynamically at very high scan rate of 20 mV s(-1) (similar to 40 C). Somewhat lower initial capacity of 30 mAh g(-1), but much lower capacity fade on cycling, was found for sodium intercalation at the same scan rate. The differences in the Li and Na charge storage capability were explained in terms of ion rearrangement during charging/discharging processes. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Journal of Power Sources",
title = "The synthesis of Li(Co-Mn-Ni)O-2 cathode material from spent-Li ion batteries and the proof of its functionality in aqueous lithium and sodium electrolytic solutions",
volume = "342",
pages = "690-703",
doi = "10.1016/j.jpowsour.2016.12.115"
}
Senćanski, J., Bajuk-Bogdanović, D. V., Majstorović, D. M., Tchernychova, E., Papan, J.,& Vujković, M. (2017). The synthesis of Li(Co-Mn-Ni)O-2 cathode material from spent-Li ion batteries and the proof of its functionality in aqueous lithium and sodium electrolytic solutions.
Journal of Power Sources, 342, 690-703.
https://doi.org/10.1016/j.jpowsour.2016.12.115
Senćanski J, Bajuk-Bogdanović DV, Majstorović DM, Tchernychova E, Papan J, Vujković M. The synthesis of Li(Co-Mn-Ni)O-2 cathode material from spent-Li ion batteries and the proof of its functionality in aqueous lithium and sodium electrolytic solutions. Journal of Power Sources. 2017;342:690-703
Senćanski Jelena, Bajuk-Bogdanović Danica V., Majstorović Divna M., Tchernychova Elena, Papan Jelena, Vujković Milica, "The synthesis of Li(Co-Mn-Ni)O-2 cathode material from spent-Li ion batteries and the proof of its functionality in aqueous lithium and sodium electrolytic solutions" Journal of Power Sources, 342 (2017):690-703,
https://doi.org/10.1016/j.jpowsour.2016.12.115 .
26
22
32

Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids

Marković, Zoran M.; Kepić, Dejan P.; Matijasevic, D. M.; Pavlović, Vladimir B.; Jovanović, Svetlana P.; Stankovic, N. K.; Milivojević, Dušan; Špitalsky, Zdenko; Holclajtner-Antunović, Ivanka D.; Bajuk-Bogdanović, Danica V.; Niksic, M. P.; Todorović-Marković, Biljana

(2017)

TY  - JOUR
AU  - Marković, Zoran M.
AU  - Kepić, Dejan P.
AU  - Matijasevic, D. M.
AU  - Pavlović, Vladimir B.
AU  - Jovanović, Svetlana P.
AU  - Stankovic, N. K.
AU  - Milivojević, Dušan
AU  - Špitalsky, Zdenko
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Niksic, M. P.
AU  - Todorović-Marković, Biljana
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1650
AB  - Curcumin and its derivates are well-known for their different biological activities including antibacterial. On the other hand there are controversial reports concerning the antibacterial potential of graphene and, in particular, graphene oxide. In this study we have reported for the first time the antibacterial activity of curcumin/graphene nanomesh hybrids under ambient light conditions. The graphene nanomesh was synthesized by electrochemical exfoliation of highly oriented pyrolytic graphite in 1 M solution of ammonium persulfate and further functionalized by curcumin. Identical values of minimum inhibitory concentration (1 mg mL(-1)) were determined for pure curcumin and curcumin/graphene nanomesh hybrids toward Staphylococcus aureus. All tested samples had more pronounced antibacterial activity against Gram positive bacteria, Staphylococcus aureus compared to Escherichia coli as a representative of Gram negative strains. The poor antibacterial potential of exfoliated graphene improves significantly by the functionalization with curcumin, which allows for its usage as a antibacterial coating.
T2  - RSC Advances
T1  - Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids
VL  - 7
IS  - 57
SP  - 36081
EP  - 36092
DO  - 10.1039/c7ra05027e
ER  - 
@article{
author = "Marković, Zoran M. and Kepić, Dejan P. and Matijasevic, D. M. and Pavlović, Vladimir B. and Jovanović, Svetlana P. and Stankovic, N. K. and Milivojević, Dušan and Špitalsky, Zdenko and Holclajtner-Antunović, Ivanka D. and Bajuk-Bogdanović, Danica V. and Niksic, M. P. and Todorović-Marković, Biljana",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1650",
abstract = "Curcumin and its derivates are well-known for their different biological activities including antibacterial. On the other hand there are controversial reports concerning the antibacterial potential of graphene and, in particular, graphene oxide. In this study we have reported for the first time the antibacterial activity of curcumin/graphene nanomesh hybrids under ambient light conditions. The graphene nanomesh was synthesized by electrochemical exfoliation of highly oriented pyrolytic graphite in 1 M solution of ammonium persulfate and further functionalized by curcumin. Identical values of minimum inhibitory concentration (1 mg mL(-1)) were determined for pure curcumin and curcumin/graphene nanomesh hybrids toward Staphylococcus aureus. All tested samples had more pronounced antibacterial activity against Gram positive bacteria, Staphylococcus aureus compared to Escherichia coli as a representative of Gram negative strains. The poor antibacterial potential of exfoliated graphene improves significantly by the functionalization with curcumin, which allows for its usage as a antibacterial coating.",
journal = "RSC Advances",
title = "Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids",
volume = "7",
number = "57",
pages = "36081-36092",
doi = "10.1039/c7ra05027e"
}
Marković, Z. M., Kepić, D. P., Matijasevic, D. M., Pavlović, V. B., Jovanović, S. P., Stankovic, N. K., Milivojević, D., Špitalsky, Z., Holclajtner-Antunović, I. D., Bajuk-Bogdanović, D. V., Niksic, M. P.,& Todorović-Marković, B. (2017). Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids.
RSC Advances, 7(57), 36081-36092.
https://doi.org/10.1039/c7ra05027e
Marković ZM, Kepić DP, Matijasevic DM, Pavlović VB, Jovanović SP, Stankovic NK, Milivojević D, Špitalsky Z, Holclajtner-Antunović ID, Bajuk-Bogdanović DV, Niksic MP, Todorović-Marković B. Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids. RSC Advances. 2017;7(57):36081-36092
Marković Zoran M., Kepić Dejan P., Matijasevic D. M., Pavlović Vladimir B., Jovanović Svetlana P., Stankovic N. K., Milivojević Dušan, Špitalsky Zdenko, Holclajtner-Antunović Ivanka D., Bajuk-Bogdanović Danica V., Niksic M. P., Todorović-Marković Biljana, "Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids" RSC Advances, 7, no. 57 (2017):36081-36092,
https://doi.org/10.1039/c7ra05027e .
19
13
17

Vibrational and electron paramagnetic resonance spectroscopic studies of beta-MnO2 and alpha-KxMnO(2) nanorods

Barudžija, Tanja; Cvjeticanin, Nikola; Bajuk-Bogdanović, Danica V.; Mojovic, Milos; Mitrić, Miodrag

(2017)

TY  - JOUR
AU  - Barudžija, Tanja
AU  - Cvjeticanin, Nikola
AU  - Bajuk-Bogdanović, Danica V.
AU  - Mojovic, Milos
AU  - Mitrić, Miodrag
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1777
AB  - Raman scattering (RS), Fourier transform infrared (FTIR) and electron paramagnetic resonance (EPR) spectroscopic measurements on beta-MnO2 and alpha-KxMnO2 nanorods were performed. The infrared spectrum of beta-MnO2 is sensitive towards the particle sizes, while the Raman spectrum is sensitive towards the presence of nonstoichiometric and disordered MnO2-delta on the surface of nanorods. EPR measurements show the appearance of two types of Mn4+ ions having different local environment: (i) Mn4+ ions in Mn4+-rich environment and (ii) Mn4+ ions in mixed-valence Mn4+/Mn3+ environment that match up with region of nonstoichiometric MnO2-delta. Observed bands in vibrational spectra of tetragonal hollanditetype alpha-KxMnO(2) are considered to be mainly due to the vibration modes of Mn-O frameworks. The EPR spectra of alpha-KxMnO(2) nanorods contain two signals that can be attributed to Mn4+ ions in Mn4+-rich environment and Mn4+ ions in mixed-valence Mn4+/Mn3+ environment close to K+ ions. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Vibrational and electron paramagnetic resonance spectroscopic studies of beta-MnO2 and alpha-KxMnO(2) nanorods
VL  - 728
SP  - 259
EP  - 270
DO  - 10.1016/j.jallcom.2017.09.015
ER  - 
@article{
author = "Barudžija, Tanja and Cvjeticanin, Nikola and Bajuk-Bogdanović, Danica V. and Mojovic, Milos and Mitrić, Miodrag",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1777",
abstract = "Raman scattering (RS), Fourier transform infrared (FTIR) and electron paramagnetic resonance (EPR) spectroscopic measurements on beta-MnO2 and alpha-KxMnO2 nanorods were performed. The infrared spectrum of beta-MnO2 is sensitive towards the particle sizes, while the Raman spectrum is sensitive towards the presence of nonstoichiometric and disordered MnO2-delta on the surface of nanorods. EPR measurements show the appearance of two types of Mn4+ ions having different local environment: (i) Mn4+ ions in Mn4+-rich environment and (ii) Mn4+ ions in mixed-valence Mn4+/Mn3+ environment that match up with region of nonstoichiometric MnO2-delta. Observed bands in vibrational spectra of tetragonal hollanditetype alpha-KxMnO(2) are considered to be mainly due to the vibration modes of Mn-O frameworks. The EPR spectra of alpha-KxMnO(2) nanorods contain two signals that can be attributed to Mn4+ ions in Mn4+-rich environment and Mn4+ ions in mixed-valence Mn4+/Mn3+ environment close to K+ ions. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Vibrational and electron paramagnetic resonance spectroscopic studies of beta-MnO2 and alpha-KxMnO(2) nanorods",
volume = "728",
pages = "259-270",
doi = "10.1016/j.jallcom.2017.09.015"
}
Barudžija, T., Cvjeticanin, N., Bajuk-Bogdanović, D. V., Mojovic, M.,& Mitrić, M. (2017). Vibrational and electron paramagnetic resonance spectroscopic studies of beta-MnO2 and alpha-KxMnO(2) nanorods.
Journal of Alloys and Compounds, 728, 259-270.
https://doi.org/10.1016/j.jallcom.2017.09.015
Barudžija T, Cvjeticanin N, Bajuk-Bogdanović DV, Mojovic M, Mitrić M. Vibrational and electron paramagnetic resonance spectroscopic studies of beta-MnO2 and alpha-KxMnO(2) nanorods. Journal of Alloys and Compounds. 2017;728:259-270
Barudžija Tanja, Cvjeticanin Nikola, Bajuk-Bogdanović Danica V., Mojovic Milos, Mitrić Miodrag, "Vibrational and electron paramagnetic resonance spectroscopic studies of beta-MnO2 and alpha-KxMnO(2) nanorods" Journal of Alloys and Compounds, 728 (2017):259-270,
https://doi.org/10.1016/j.jallcom.2017.09.015 .
8
6
6

The role of surface chemistry in the charge storage properties of graphene oxide

Jovanović, Zoran M.; Bajuk-Bogdanović, Danica V.; Jovanović, Sonja; Mravik, Željko; Kovač, Janez; Holclajtner-Antunović, Ivanka D.; Vujković, Milica

(2017)

TY  - JOUR
AU  - Jovanović, Zoran M.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Jovanović, Sonja
AU  - Mravik, Željko
AU  - Kovač, Janez
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Vujković, Milica
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1879
AB  - In the present study we have evaluated the contribution of particular oxygen functional groups in the charge storage properties of graphene oxide (GO). This was achieved by a gradual thermal reduction of GO in an inert atmosphere (up to 800 degrees C) and thorough examination of functional groups which remained after each de-functionalization step. After identification of functional groups, the character of additional cyclovoltammetric peak, less pronounced than the main redox quinone/hydroquinone pair, and overall charge storage properties of GO were discussed from the perspective of different thermal stability of its surface groups. The results indicated three-stage deoxidation process of GO, each comprising of specific surface chemistry, structural changes and electrochemical behavior. The low capacitance, similar to 50 F g(-1), at T LT = 300 degrees C was attributed to the presence of epoxy and carboxyl groups. The highest capacitance (120-130 F g(-1)) was observed in the case of GO reduced at 400 and 500 degrees C, which we attributed to positive effects of phenol and carbonyl/quinone groups, while at high temperatures (T GT = 600 degrees C, similar to 30 F g(-1)) the extensive desorption of functional groups and structural changes were emphasized as the main reasons for additional decrease of capacitance. Our results highlight the cases where the duality of interpretation of surface functional groups is likely to happen and indicate that not all functional groups play a positive role in charge storage behavior of graphene oxide. (C) 2017 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - The role of surface chemistry in the charge storage properties of graphene oxide
VL  - 258
SP  - 1228
EP  - 1243
DO  - 10.1016/j.electacta.2017.11.178
ER  - 
@article{
author = "Jovanović, Zoran M. and Bajuk-Bogdanović, Danica V. and Jovanović, Sonja and Mravik, Željko and Kovač, Janez and Holclajtner-Antunović, Ivanka D. and Vujković, Milica",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1879",
abstract = "In the present study we have evaluated the contribution of particular oxygen functional groups in the charge storage properties of graphene oxide (GO). This was achieved by a gradual thermal reduction of GO in an inert atmosphere (up to 800 degrees C) and thorough examination of functional groups which remained after each de-functionalization step. After identification of functional groups, the character of additional cyclovoltammetric peak, less pronounced than the main redox quinone/hydroquinone pair, and overall charge storage properties of GO were discussed from the perspective of different thermal stability of its surface groups. The results indicated three-stage deoxidation process of GO, each comprising of specific surface chemistry, structural changes and electrochemical behavior. The low capacitance, similar to 50 F g(-1), at T LT = 300 degrees C was attributed to the presence of epoxy and carboxyl groups. The highest capacitance (120-130 F g(-1)) was observed in the case of GO reduced at 400 and 500 degrees C, which we attributed to positive effects of phenol and carbonyl/quinone groups, while at high temperatures (T GT = 600 degrees C, similar to 30 F g(-1)) the extensive desorption of functional groups and structural changes were emphasized as the main reasons for additional decrease of capacitance. Our results highlight the cases where the duality of interpretation of surface functional groups is likely to happen and indicate that not all functional groups play a positive role in charge storage behavior of graphene oxide. (C) 2017 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "The role of surface chemistry in the charge storage properties of graphene oxide",
volume = "258",
pages = "1228-1243",
doi = "10.1016/j.electacta.2017.11.178"
}
Jovanović, Z. M., Bajuk-Bogdanović, D. V., Jovanović, S., Mravik, Ž., Kovač, J., Holclajtner-Antunović, I. D.,& Vujković, M. (2017). The role of surface chemistry in the charge storage properties of graphene oxide.
Electrochimica Acta, 258, 1228-1243.
https://doi.org/10.1016/j.electacta.2017.11.178
Jovanović ZM, Bajuk-Bogdanović DV, Jovanović S, Mravik Ž, Kovač J, Holclajtner-Antunović ID, Vujković M. The role of surface chemistry in the charge storage properties of graphene oxide. Electrochimica Acta. 2017;258:1228-1243
Jovanović Zoran M., Bajuk-Bogdanović Danica V., Jovanović Sonja, Mravik Željko, Kovač Janez, Holclajtner-Antunović Ivanka D., Vujković Milica, "The role of surface chemistry in the charge storage properties of graphene oxide" Electrochimica Acta, 258 (2017):1228-1243,
https://doi.org/10.1016/j.electacta.2017.11.178 .
16
15
17

Surface chemistry, thermal stability and structural properties of graphene oxide/12-tungstophosphoric acid nanocomposite

Marković, Smilja; Mravik, Željko; Bajuk-Bogdanović, Danica V.; Marković, Smilja; Holclajtner-Antunović, Ivanka D.; Jovanović, Zoran M.

(Belgrade : Institute of Technical Sciences of SASA, 2017)

TY  - CONF
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Marković, Smilja
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Jovanović, Zoran M.
PY  - 2017
UR  - http://itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1219
UR  - http://itn.sanu.ac.rs/opus4/files/1219/Mravik_16YRC2017.pdf
UR  - http://dais.sanu.ac.rs/123456789/15450
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7556
AB  - In recent years the nanocomposites of graphene oxide (GO) and different inorganic and organic compounds have shown great potential for charge storage applications. In present work we have investigated the influence of 12-tungstophosphoric acid (WPA) on surface chemistry of graphene oxide and thermal stability of nanocomposite. For this purpose nanocomposites with different mass ratios of GO and WPA were prepared. The thermal stability of nanocomposites was investigated by thermogravimetric and differential thermal analysis (TGA-DTA) while changes in surface chemistry of GO and structural properties of WPA were investigated by Fourier transform infrared spectroscopy (FTIR) and temperature programmed desorption (TPD) method. The TGA-DTA measurements of composites have shown that the major mass loss, due to carbon combustion, is shifted to higher temperatures (~500 °C vs. 380 °C of pure GO). Furthermore, when the amount of WPA is higher than 25 mass percent the nanocomposites start to act like individual components, which was also confirmed by FTIR analysis. The amount of surface oxygen groups, monitored by both TPD and FTIR methods, showed ˝V˝ shaped dependence from the quantity of WPA with minimum at about 12 mass percent of WPA. At the same time, the FTIR spectra revealed the structural changes of WPA, displayed as shifting and splitting of characteristic bands of Keggin anion structure.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Sixteenth Young Researchers' Conference Materials Sciences and Engineering, December 6-8, 2017, Belgrade, Serbia
T1  - Surface chemistry, thermal stability and structural properties of graphene oxide/12-tungstophosphoric acid nanocomposite
SP  - 48
EP  - 48
ER  - 
@conference{
editor = "Marković, Smilja",
author = "Mravik, Željko and Bajuk-Bogdanović, Danica V. and Marković, Smilja and Holclajtner-Antunović, Ivanka D. and Jovanović, Zoran M.",
year = "2017",
url = "http://itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1219, http://itn.sanu.ac.rs/opus4/files/1219/Mravik_16YRC2017.pdf, http://dais.sanu.ac.rs/123456789/15450, http://vinar.vin.bg.ac.rs/handle/123456789/7556",
abstract = "In recent years the nanocomposites of graphene oxide (GO) and different inorganic and organic compounds have shown great potential for charge storage applications. In present work we have investigated the influence of 12-tungstophosphoric acid (WPA) on surface chemistry of graphene oxide and thermal stability of nanocomposite. For this purpose nanocomposites with different mass ratios of GO and WPA were prepared. The thermal stability of nanocomposites was investigated by thermogravimetric and differential thermal analysis (TGA-DTA) while changes in surface chemistry of GO and structural properties of WPA were investigated by Fourier transform infrared spectroscopy (FTIR) and temperature programmed desorption (TPD) method. The TGA-DTA measurements of composites have shown that the major mass loss, due to carbon combustion, is shifted to higher temperatures (~500 °C vs. 380 °C of pure GO). Furthermore, when the amount of WPA is higher than 25 mass percent the nanocomposites start to act like individual components, which was also confirmed by FTIR analysis. The amount of surface oxygen groups, monitored by both TPD and FTIR methods, showed ˝V˝ shaped dependence from the quantity of WPA with minimum at about 12 mass percent of WPA. At the same time, the FTIR spectra revealed the structural changes of WPA, displayed as shifting and splitting of characteristic bands of Keggin anion structure.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Sixteenth Young Researchers' Conference Materials Sciences and Engineering, December 6-8, 2017, Belgrade, Serbia",
title = "Surface chemistry, thermal stability and structural properties of graphene oxide/12-tungstophosphoric acid nanocomposite",
pages = "48-48"
}
Marković, S., Mravik, Ž., Bajuk-Bogdanović, D. V., Marković, S., Holclajtner-Antunović, I. D.,& Jovanović, Z. M. (2017). Surface chemistry, thermal stability and structural properties of graphene oxide/12-tungstophosphoric acid nanocomposite.
Program and the Book of Abstracts / Sixteenth Young Researchers' Conference Materials Sciences and Engineering, December 6-8, 2017, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 48-48.
Marković S, Mravik Ž, Bajuk-Bogdanović DV, Marković S, Holclajtner-Antunović ID, Jovanović ZM. Surface chemistry, thermal stability and structural properties of graphene oxide/12-tungstophosphoric acid nanocomposite. Program and the Book of Abstracts / Sixteenth Young Researchers' Conference Materials Sciences and Engineering, December 6-8, 2017, Belgrade, Serbia. 2017;:48-48
Marković Smilja, Mravik Željko, Bajuk-Bogdanović Danica V., Marković Smilja, Holclajtner-Antunović Ivanka D., Jovanović Zoran M., "Surface chemistry, thermal stability and structural properties of graphene oxide/12-tungstophosphoric acid nanocomposite" Program and the Book of Abstracts / Sixteenth Young Researchers' Conference Materials Sciences and Engineering, December 6-8, 2017, Belgrade, Serbia (2017):48-48

Influence of synthetic conditions on the structure and electrical properties of nanofibrous polyanilines and their nanofibrous carbonized forms

Lezaic, Aleksandra Janosevic; Bajuk-Bogdanović, Danica V.; Radoičić, Marija B.; Mirsky, Vladimir M.; Ćirić-Marjanović, Gordana N.

(2016)

TY  - JOUR
AU  - Lezaic, Aleksandra Janosevic
AU  - Bajuk-Bogdanović, Danica V.
AU  - Radoičić, Marija B.
AU  - Mirsky, Vladimir M.
AU  - Ćirić-Marjanović, Gordana N.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1027
AB  - Nanofibrous polyanilines (PANIs) were synthesized by several oxidative polymerization pathways that have in common the presence of excess oxidant(s) (ammonium peroxydisulfate and its mixture with hydrogen peroxide), the absence of added acid, and the absence of external template (self-assembly process). Conducting forms of the synthesized PANI nanofibers (re)doped with various acids were further used as precursors for carbonization process to obtain nanofibrous carbonaceous materials (Carb-PANIs). Morphology, molecular structure, surface properties and electrical characteristics of PANI nanofibrous precursors and their carbonized counterparts were studied by scanning electron microscopy, Raman spectroscopy, by measurements of zeta-potential and determination of isoelectric points, as well as by measurements of electrical conductivity. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Synthetic Metals
T1  - Influence of synthetic conditions on the structure and electrical properties of nanofibrous polyanilines and their nanofibrous carbonized forms
VL  - 214
SP  - 35
EP  - 44
DO  - 10.1016/j.synthmet.2016.01.015
ER  - 
@article{
author = "Lezaic, Aleksandra Janosevic and Bajuk-Bogdanović, Danica V. and Radoičić, Marija B. and Mirsky, Vladimir M. and Ćirić-Marjanović, Gordana N.",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1027",
abstract = "Nanofibrous polyanilines (PANIs) were synthesized by several oxidative polymerization pathways that have in common the presence of excess oxidant(s) (ammonium peroxydisulfate and its mixture with hydrogen peroxide), the absence of added acid, and the absence of external template (self-assembly process). Conducting forms of the synthesized PANI nanofibers (re)doped with various acids were further used as precursors for carbonization process to obtain nanofibrous carbonaceous materials (Carb-PANIs). Morphology, molecular structure, surface properties and electrical characteristics of PANI nanofibrous precursors and their carbonized counterparts were studied by scanning electron microscopy, Raman spectroscopy, by measurements of zeta-potential and determination of isoelectric points, as well as by measurements of electrical conductivity. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Synthetic Metals",
title = "Influence of synthetic conditions on the structure and electrical properties of nanofibrous polyanilines and their nanofibrous carbonized forms",
volume = "214",
pages = "35-44",
doi = "10.1016/j.synthmet.2016.01.015"
}
Lezaic, A. J., Bajuk-Bogdanović, D. V., Radoičić, M. B., Mirsky, V. M.,& Ćirić-Marjanović, G. N. (2016). Influence of synthetic conditions on the structure and electrical properties of nanofibrous polyanilines and their nanofibrous carbonized forms.
Synthetic Metals, 214, 35-44.
https://doi.org/10.1016/j.synthmet.2016.01.015
Lezaic AJ, Bajuk-Bogdanović DV, Radoičić MB, Mirsky VM, Ćirić-Marjanović GN. Influence of synthetic conditions on the structure and electrical properties of nanofibrous polyanilines and their nanofibrous carbonized forms. Synthetic Metals. 2016;214:35-44
Lezaic Aleksandra Janosevic, Bajuk-Bogdanović Danica V., Radoičić Marija B., Mirsky Vladimir M., Ćirić-Marjanović Gordana N., "Influence of synthetic conditions on the structure and electrical properties of nanofibrous polyanilines and their nanofibrous carbonized forms" Synthetic Metals, 214 (2016):35-44,
https://doi.org/10.1016/j.synthmet.2016.01.015 .
1
14
13
13

Archaeometric Investigation of Medieval Pottery from Excavations At Novo Brdo, Serbia

Damjanovic, L. J.; Mioc, U.; Bajuk-Bogdanović, Danica V.; Cerovic, N.; Maric-Stojanovic, M.; Andrić, Velibor; Holclajtner-Antunović, Ivanka D.

(2016)

TY  - JOUR
AU  - Damjanovic, L. J.
AU  - Mioc, U.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Cerovic, N.
AU  - Maric-Stojanovic, M.
AU  - Andrić, Velibor
AU  - Holclajtner-Antunović, Ivanka D.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1177
AB  - Medieval pottery from excavations at Novo Brdo, Serbia, an important mining and trading centre during the 14th and 15th centuries, was investigated by a combination of optical microscopy, inductively coupled plasma - optical emission spectrometry, Fourier transform infrared, micro-Raman and energy-dispersive X-ray fluorescence spectroscopy and X-ray powder diffraction methods in order to determine its composition and firing temperature. The samples investigated were made of medium- to coarse-grained, non-calcareous clay, by a relatively well-controlled firing procedure in an oxidizing atmosphere. The firing temperature was estimated to be 850-950 degrees C. The similarity between the chemical composition of the investigated pottery and the local raw clay, combined with the outward appearance and the archaeological findings, indicate domestic production. The pottery is covered with the transparent lead-rich glaze. Iron and copper were used as colourants.
T2  - Archaeometry
T1  - Archaeometric Investigation of Medieval Pottery from Excavations At Novo Brdo, Serbia
VL  - 58
IS  - 3
SP  - 380
EP  - 400
DO  - 10.1111/arcm.12185
ER  - 
@article{
author = "Damjanovic, L. J. and Mioc, U. and Bajuk-Bogdanović, Danica V. and Cerovic, N. and Maric-Stojanovic, M. and Andrić, Velibor and Holclajtner-Antunović, Ivanka D.",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1177",
abstract = "Medieval pottery from excavations at Novo Brdo, Serbia, an important mining and trading centre during the 14th and 15th centuries, was investigated by a combination of optical microscopy, inductively coupled plasma - optical emission spectrometry, Fourier transform infrared, micro-Raman and energy-dispersive X-ray fluorescence spectroscopy and X-ray powder diffraction methods in order to determine its composition and firing temperature. The samples investigated were made of medium- to coarse-grained, non-calcareous clay, by a relatively well-controlled firing procedure in an oxidizing atmosphere. The firing temperature was estimated to be 850-950 degrees C. The similarity between the chemical composition of the investigated pottery and the local raw clay, combined with the outward appearance and the archaeological findings, indicate domestic production. The pottery is covered with the transparent lead-rich glaze. Iron and copper were used as colourants.",
journal = "Archaeometry",
title = "Archaeometric Investigation of Medieval Pottery from Excavations At Novo Brdo, Serbia",
volume = "58",
number = "3",
pages = "380-400",
doi = "10.1111/arcm.12185"
}
Damjanovic, L. J., Mioc, U., Bajuk-Bogdanović, D. V., Cerovic, N., Maric-Stojanovic, M., Andrić, V.,& Holclajtner-Antunović, I. D. (2016). Archaeometric Investigation of Medieval Pottery from Excavations At Novo Brdo, Serbia.
Archaeometry, 58(3), 380-400.
https://doi.org/10.1111/arcm.12185
Damjanovic LJ, Mioc U, Bajuk-Bogdanović DV, Cerovic N, Maric-Stojanovic M, Andrić V, Holclajtner-Antunović ID. Archaeometric Investigation of Medieval Pottery from Excavations At Novo Brdo, Serbia. Archaeometry. 2016;58(3):380-400
Damjanovic L. J., Mioc U., Bajuk-Bogdanović Danica V., Cerovic N., Maric-Stojanovic M., Andrić Velibor, Holclajtner-Antunović Ivanka D., "Archaeometric Investigation of Medieval Pottery from Excavations At Novo Brdo, Serbia" Archaeometry, 58, no. 3 (2016):380-400,
https://doi.org/10.1111/arcm.12185 .
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Raman study of the interactions between highly ordered pyrolytic graphite (HOPG) and polyoxometalates: The effects of acid concentration

Vidoeski, Bojan; Jovanović, Svetlana P.; Holclajtner-Antunović, Ivanka D.; Bajuk-Bogdanović, Danica V.; Budimir, Milica; Marković, Zoran M.; Todorović-Marković, Biljana

(2016)

TY  - JOUR
AU  - Vidoeski, Bojan
AU  - Jovanović, Svetlana P.
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Budimir, Milica
AU  - Marković, Zoran M.
AU  - Todorović-Marković, Biljana
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1219
AB  - Heteropoly acids (HPAs) have found wide applications, such as in catalysis, energy conversion and storage, analytical chemistry, clinical medicine, materials science and others, but their use is limited due to their low surface area and high solubility in water. One of the possible ways to overcome these obstacles is to use height specific surface area supports for HPAs, such as carbon nanomaterials. Raman spectroscopy was applied for a studying the interaction between HPAs and highly ordered pyrolytic graphite (HOPG) as a model of a support. HOPG was exposed to two different HPAs: 12-tungsto-phosphoric acid and 12-molybodphosphoric acid, at different concentrations. It was noticed that 12-molybodphosphoric acid had stronger effects on the HOPG structure causing a weak doping and an increase of structural disorder. It was supposed that HOPG interacts with especially external oxygen atoms of 12-molybodphosphoric acid. Atomic force microscopy showed that the surface roughness of HOPG treated with 12-molybodphosphoric acid increases with increasing acid concentration, while in the case of HOPG exposed to 12-tungsto-phosphoric acid, the surface roughness concentration independent. The growth trend in the measured surface roughness (RMS) was in the agreement with the changes in the intensity ratio I-D/I-G obtained from the Raman spectra of the HOPG samples treated with 12-molybdophosphoric acid.
T2  - Journal of the Serbian Chemical Society
T1  - Raman study of the interactions between highly ordered pyrolytic graphite (HOPG) and polyoxometalates: The effects of acid concentration
VL  - 81
IS  - 7
SP  - 777
EP  - 787
DO  - 10.2298/JSC160301055V
ER  - 
@article{
author = "Vidoeski, Bojan and Jovanović, Svetlana P. and Holclajtner-Antunović, Ivanka D. and Bajuk-Bogdanović, Danica V. and Budimir, Milica and Marković, Zoran M. and Todorović-Marković, Biljana",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1219",
abstract = "Heteropoly acids (HPAs) have found wide applications, such as in catalysis, energy conversion and storage, analytical chemistry, clinical medicine, materials science and others, but their use is limited due to their low surface area and high solubility in water. One of the possible ways to overcome these obstacles is to use height specific surface area supports for HPAs, such as carbon nanomaterials. Raman spectroscopy was applied for a studying the interaction between HPAs and highly ordered pyrolytic graphite (HOPG) as a model of a support. HOPG was exposed to two different HPAs: 12-tungsto-phosphoric acid and 12-molybodphosphoric acid, at different concentrations. It was noticed that 12-molybodphosphoric acid had stronger effects on the HOPG structure causing a weak doping and an increase of structural disorder. It was supposed that HOPG interacts with especially external oxygen atoms of 12-molybodphosphoric acid. Atomic force microscopy showed that the surface roughness of HOPG treated with 12-molybodphosphoric acid increases with increasing acid concentration, while in the case of HOPG exposed to 12-tungsto-phosphoric acid, the surface roughness concentration independent. The growth trend in the measured surface roughness (RMS) was in the agreement with the changes in the intensity ratio I-D/I-G obtained from the Raman spectra of the HOPG samples treated with 12-molybdophosphoric acid.",
journal = "Journal of the Serbian Chemical Society",
title = "Raman study of the interactions between highly ordered pyrolytic graphite (HOPG) and polyoxometalates: The effects of acid concentration",
volume = "81",
number = "7",
pages = "777-787",
doi = "10.2298/JSC160301055V"
}
Vidoeski, B., Jovanović, S. P., Holclajtner-Antunović, I. D., Bajuk-Bogdanović, D. V., Budimir, M., Marković, Z. M.,& Todorović-Marković, B. (2016). Raman study of the interactions between highly ordered pyrolytic graphite (HOPG) and polyoxometalates: The effects of acid concentration.
Journal of the Serbian Chemical Society, 81(7), 777-787.
https://doi.org/10.2298/JSC160301055V
Vidoeski B, Jovanović SP, Holclajtner-Antunović ID, Bajuk-Bogdanović DV, Budimir M, Marković ZM, Todorović-Marković B. Raman study of the interactions between highly ordered pyrolytic graphite (HOPG) and polyoxometalates: The effects of acid concentration. Journal of the Serbian Chemical Society. 2016;81(7):777-787
Vidoeski Bojan, Jovanović Svetlana P., Holclajtner-Antunović Ivanka D., Bajuk-Bogdanović Danica V., Budimir Milica, Marković Zoran M., Todorović-Marković Biljana, "Raman study of the interactions between highly ordered pyrolytic graphite (HOPG) and polyoxometalates: The effects of acid concentration" Journal of the Serbian Chemical Society, 81, no. 7 (2016):777-787,
https://doi.org/10.2298/JSC160301055V .
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Synthesis and Characterization of Electrochemically Exfoliated Graphene-Molybdophosphate Hybrid Materials for Charge Storage Devices

Vujković, Milica; Vidoeski, Bojan; Jovanović, Svetlana P.; Bajuk-Bogdanović, Danica V.; Budimir, Milica; Marković, Zoran M.; Pavlović, Vladimir B.; Todorović-Marković, Biljana; Holclajtner-Antunović, Ivanka D.

(2016)

TY  - JOUR
AU  - Vujković, Milica
AU  - Vidoeski, Bojan
AU  - Jovanović, Svetlana P.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Budimir, Milica
AU  - Marković, Zoran M.
AU  - Pavlović, Vladimir B.
AU  - Todorović-Marković, Biljana
AU  - Holclajtner-Antunović, Ivanka D.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1274
AB  - A novel electrochemically exfoliated graphene-molybdophosphoric acid nanohybride (EG-MoPA) was prepared via a simple method. Both scanning electron (SEM) and atomic force microscopy (AFM) results show that MoPA clusters are attached to the surfaces of graphene sheets. By changing the mass ratio of EG-MoPA, the morphology of nanohybrid itself can be significantly modulated, from mostly flat graphene like structure at low amount of MoPA to very uneven, wavy surfaces when MoPA is present in higher concentration. The Raman and Fourier transform infra red (FTIR) spectra in conjunction with electrochemical results indicate that strong interaction exists between the components of nanohybride based on charge transfer and electrostatic interaction of graphene sheets and MoPA. The electrochemical performances are improved by synergetic effect of reversible redox properties of MoPA and the double layer capacitance of a high-surface area of the obtained nanohybrides. The higher current capability of EG was achieved by anchoring the small MoPA concentration on the graphene support. The strong bonding of EG with the MoPA prevents acid to dissolve in the electrolyte upon cycling, enabling the stable capacitance behaviour of the low-doped EG sample. The capacitance for the EG doped with the high amount of MoPA was found to be much larger than for EG. However, the obtained capacitance decreases at the beginning of cycling due to the dissolution of excessive amount of surface MoPA, weakly bonded to the graphene support. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Synthesis and Characterization of Electrochemically Exfoliated Graphene-Molybdophosphate Hybrid Materials for Charge Storage Devices
VL  - 217
SP  - 34
EP  - 46
DO  - 10.1016/j.electacta.2016.09.067
ER  - 
@article{
author = "Vujković, Milica and Vidoeski, Bojan and Jovanović, Svetlana P. and Bajuk-Bogdanović, Danica V. and Budimir, Milica and Marković, Zoran M. and Pavlović, Vladimir B. and Todorović-Marković, Biljana and Holclajtner-Antunović, Ivanka D.",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1274",
abstract = "A novel electrochemically exfoliated graphene-molybdophosphoric acid nanohybride (EG-MoPA) was prepared via a simple method. Both scanning electron (SEM) and atomic force microscopy (AFM) results show that MoPA clusters are attached to the surfaces of graphene sheets. By changing the mass ratio of EG-MoPA, the morphology of nanohybrid itself can be significantly modulated, from mostly flat graphene like structure at low amount of MoPA to very uneven, wavy surfaces when MoPA is present in higher concentration. The Raman and Fourier transform infra red (FTIR) spectra in conjunction with electrochemical results indicate that strong interaction exists between the components of nanohybride based on charge transfer and electrostatic interaction of graphene sheets and MoPA. The electrochemical performances are improved by synergetic effect of reversible redox properties of MoPA and the double layer capacitance of a high-surface area of the obtained nanohybrides. The higher current capability of EG was achieved by anchoring the small MoPA concentration on the graphene support. The strong bonding of EG with the MoPA prevents acid to dissolve in the electrolyte upon cycling, enabling the stable capacitance behaviour of the low-doped EG sample. The capacitance for the EG doped with the high amount of MoPA was found to be much larger than for EG. However, the obtained capacitance decreases at the beginning of cycling due to the dissolution of excessive amount of surface MoPA, weakly bonded to the graphene support. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Synthesis and Characterization of Electrochemically Exfoliated Graphene-Molybdophosphate Hybrid Materials for Charge Storage Devices",
volume = "217",
pages = "34-46",
doi = "10.1016/j.electacta.2016.09.067"
}
Vujković, M., Vidoeski, B., Jovanović, S. P., Bajuk-Bogdanović, D. V., Budimir, M., Marković, Z. M., Pavlović, V. B., Todorović-Marković, B.,& Holclajtner-Antunović, I. D. (2016). Synthesis and Characterization of Electrochemically Exfoliated Graphene-Molybdophosphate Hybrid Materials for Charge Storage Devices.
Electrochimica Acta, 217, 34-46.
https://doi.org/10.1016/j.electacta.2016.09.067
Vujković M, Vidoeski B, Jovanović SP, Bajuk-Bogdanović DV, Budimir M, Marković ZM, Pavlović VB, Todorović-Marković B, Holclajtner-Antunović ID. Synthesis and Characterization of Electrochemically Exfoliated Graphene-Molybdophosphate Hybrid Materials for Charge Storage Devices. Electrochimica Acta. 2016;217:34-46
Vujković Milica, Vidoeski Bojan, Jovanović Svetlana P., Bajuk-Bogdanović Danica V., Budimir Milica, Marković Zoran M., Pavlović Vladimir B., Todorović-Marković Biljana, Holclajtner-Antunović Ivanka D., "Synthesis and Characterization of Electrochemically Exfoliated Graphene-Molybdophosphate Hybrid Materials for Charge Storage Devices" Electrochimica Acta, 217 (2016):34-46,
https://doi.org/10.1016/j.electacta.2016.09.067 .
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Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed

Dodevski, Vladimir; Stojmenović, Marija; Vujković, Milica; Krstić, Jugoslav B.; Krstić, Sanja S.; Bajuk-Bogdanović, Danica V.; Kuzmanović, Bojana; Kaluđerović, Branka V.; Mentus, Slavko V.

(2016)

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Stojmenović, Marija
AU  - Vujković, Milica
AU  - Krstić, Jugoslav B.
AU  - Krstić, Sanja S.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Kuzmanović, Bojana
AU  - Kaluđerović, Branka V.
AU  - Mentus, Slavko V.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1396
AB  - Activated carbon was prepared using plane tree seed as a cheap and renewable raw material. The samples were prepared by carbonization under N-2 atmosphere up to 850 degrees C, and activation in CO2 atmosphere at different both temperatures (750 and 850 degrees C) and times of activation (0.3,1 and 2 h). The influence of activation parameters on physicochemical properties was studied by XRPD, Raman spectroscopy, FTIR, N-2 physisorption, SEM and electrochemical methods. The pore structure was correlated to the specific capacitance and the amount of hydrogen stored, in alkaline, neutral and acidic electrolyte solution. The relationship of asymmetrical shape of CV curves with the porosity of samples has served to better understand some unclear issues related to the complex mechanism of charge storage. The sample activated at 850 degrees C for 2 h displayed the best behavior. At a high scan rate of 300 mV s(-1), its capacitance, amounted to similar to 26.8 mu F cm(-2) 19.69 mu F cm(-2) and 25.8 mu Fcm(-2) in KOH, Na2SO4, and H2SO4 solutions, respectively. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed
VL  - 222
SP  - 156
EP  - 171
DO  - 10.1016/j.electacta.2016.10.182
ER  - 
@article{
author = "Dodevski, Vladimir and Stojmenović, Marija and Vujković, Milica and Krstić, Jugoslav B. and Krstić, Sanja S. and Bajuk-Bogdanović, Danica V. and Kuzmanović, Bojana and Kaluđerović, Branka V. and Mentus, Slavko V.",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1396",
abstract = "Activated carbon was prepared using plane tree seed as a cheap and renewable raw material. The samples were prepared by carbonization under N-2 atmosphere up to 850 degrees C, and activation in CO2 atmosphere at different both temperatures (750 and 850 degrees C) and times of activation (0.3,1 and 2 h). The influence of activation parameters on physicochemical properties was studied by XRPD, Raman spectroscopy, FTIR, N-2 physisorption, SEM and electrochemical methods. The pore structure was correlated to the specific capacitance and the amount of hydrogen stored, in alkaline, neutral and acidic electrolyte solution. The relationship of asymmetrical shape of CV curves with the porosity of samples has served to better understand some unclear issues related to the complex mechanism of charge storage. The sample activated at 850 degrees C for 2 h displayed the best behavior. At a high scan rate of 300 mV s(-1), its capacitance, amounted to similar to 26.8 mu F cm(-2) 19.69 mu F cm(-2) and 25.8 mu Fcm(-2) in KOH, Na2SO4, and H2SO4 solutions, respectively. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed",
volume = "222",
pages = "156-171",
doi = "10.1016/j.electacta.2016.10.182"
}
Dodevski, V., Stojmenović, M., Vujković, M., Krstić, J. B., Krstić, S. S., Bajuk-Bogdanović, D. V., Kuzmanović, B., Kaluđerović, B. V.,& Mentus, S. V. (2016). Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed.
Electrochimica Acta, 222, 156-171.
https://doi.org/10.1016/j.electacta.2016.10.182
Dodevski V, Stojmenović M, Vujković M, Krstić JB, Krstić SS, Bajuk-Bogdanović DV, Kuzmanović B, Kaluđerović BV, Mentus SV. Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed. Electrochimica Acta. 2016;222:156-171
Dodevski Vladimir, Stojmenović Marija, Vujković Milica, Krstić Jugoslav B., Krstić Sanja S., Bajuk-Bogdanović Danica V., Kuzmanović Bojana, Kaluđerović Branka V., Mentus Slavko V., "Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed" Electrochimica Acta, 222 (2016):156-171,
https://doi.org/10.1016/j.electacta.2016.10.182 .
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