TY  - JOUR
AU  - Kovačević, Marija
AU  - Živković, Sanja
AU  - Ognjanović, Miloš
AU  - Momčilović, Miloš
AU  - Relić, Dubravka
AU  - Vasić Anićijević, Dragana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11442
AB  - (1) Background: An increasing use of pharmaceutics imposes a need for the permanent development of efficient strategies, including the tailoring of highly specific new materials for their removal from the environment. Photocatalytic degradation has been the subject of increasing interest of the researchers in the field. (2) Methods: This paper is focused on the investigation of the possibility to deposit a thin metal layer on a TiO2 surface and study its photocatalytic performance for the degradation of ciprofloxacin using a combination of theoretical and experimental methods. (3) Results: Based on the extensive DFT screening of 24 d-metals’ adhesion on TiO2, Cu was selected for further work, due to the satisfactory expected stability and good availability. The (Cu)TiO2 was successfully synthesized and characterized with XRD, SEM+EDS and UV-Vis spectrophotometry. The uniformly distributed copper on the TiO2 surface corresponds to the binding on high-affinity oxygen-rich sites, as proposed with DFT calculations. The photocatalytic degradation rate of ciprofloxacin was improved by about a factor of 1.5 compared to the bare non-modified TiO2. (4) Conclusions: The observed result was ascribed to the ability of adsorbed Cu to impede the agglomeration of TiO2 and increase the active catalytic area, and bandgap narrowing predicted with DFT calculations.
T2  - Materials
T1  - In Silico Guided Design of Metal/Semiconductor Photocatalysts: A Case of Cu-Modified TiO2 for Ciprofloxacin Degradation
VL  - 16
IS  - 16
SP  - 5708
DO  - 10.3390/ma16165708
ER  - 

@article{
author = "Kovačević, Marija and Živković, Sanja and Ognjanović, Miloš and Momčilović, Miloš and Relić, Dubravka and Vasić Anićijević, Dragana",
year = "2023",
abstract = "(1) Background: An increasing use of pharmaceutics imposes a need for the permanent development of efficient strategies, including the tailoring of highly specific new materials for their removal from the environment. Photocatalytic degradation has been the subject of increasing interest of the researchers in the field. (2) Methods: This paper is focused on the investigation of the possibility to deposit a thin metal layer on a TiO2 surface and study its photocatalytic performance for the degradation of ciprofloxacin using a combination of theoretical and experimental methods. (3) Results: Based on the extensive DFT screening of 24 d-metals’ adhesion on TiO2, Cu was selected for further work, due to the satisfactory expected stability and good availability. The (Cu)TiO2 was successfully synthesized and characterized with XRD, SEM+EDS and UV-Vis spectrophotometry. The uniformly distributed copper on the TiO2 surface corresponds to the binding on high-affinity oxygen-rich sites, as proposed with DFT calculations. The photocatalytic degradation rate of ciprofloxacin was improved by about a factor of 1.5 compared to the bare non-modified TiO2. (4) Conclusions: The observed result was ascribed to the ability of adsorbed Cu to impede the agglomeration of TiO2 and increase the active catalytic area, and bandgap narrowing predicted with DFT calculations.",
journal = "Materials",
title = "In Silico Guided Design of Metal/Semiconductor Photocatalysts: A Case of Cu-Modified TiO2 for Ciprofloxacin Degradation",
volume = "16",
number = "16",
pages = "5708",
doi = "10.3390/ma16165708"
}

Kovačević, M., Živković, S., Ognjanović, M., Momčilović, M., Relić, D.,& Vasić Anićijević, D.. (2023). In Silico Guided Design of Metal/Semiconductor Photocatalysts: A Case of Cu-Modified TiO2 for Ciprofloxacin Degradation. in Materials, 16(16), 5708.
https://doi.org/10.3390/ma16165708

Kovačević M, Živković S, Ognjanović M, Momčilović M, Relić D, Vasić Anićijević D. In Silico Guided Design of Metal/Semiconductor Photocatalysts: A Case of Cu-Modified TiO2 for Ciprofloxacin Degradation. in Materials. 2023;16(16):5708.
doi:10.3390/ma16165708 .

Kovačević, Marija, Živković, Sanja, Ognjanović, Miloš, Momčilović, Miloš, Relić, Dubravka, Vasić Anićijević, Dragana, "In Silico Guided Design of Metal/Semiconductor Photocatalysts: A Case of Cu-Modified TiO2 for Ciprofloxacin Degradation" in Materials, 16, no. 16 (2023):5708,
https://doi.org/10.3390/ma16165708 . .

TY  - CONF
AU  - Radenković, Marina
AU  - Petrović, Jelena D.
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Relić, Dubravka
AU  - Popović, Aleksandar
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12739
AB  - U ovom radu korišćena je ljuska suncokreta za procenu efikasnosti uklanjanja teških metala iz vodenih rastvora. Na samom početku optimizovani su uslovi maksimalne adsorpcije teških metala u funkciji pH rastvora i vremena kontakta. Nakon toga, određena je efikasnost uklanjanja Ni iz uzorka otpadne vode korišćenjem suncokretove ljuske kao biosorbenta spektroskopijom laserski indukovane plazme (LIBS) i standardnom spektrohemijskom ICP-OES metodom. Rezultati su upoređeni, a dobijene vrednosti su u opsegu granica nesigurnosti LIBS metode.
AB  - In this work, the sunflower husk was used to evaluate the removal efficiency of heavy metals from an aqueous solution. Firstly, the condition for maximum adsorption of heavy metals is optimized as a function of pH and contact time. Тhereafter, the removal efficiency of Ni from the industrial wastewater by the usage of the sunflower husk as a biosorbent was evaluated by laser-induced breakdown spectroscopy (LIBS), and by the standard spectrochemical ICP-OES method. The values obtained by these two methods were compared and the results are within the uncertainty of the LIBS method.
PB  - Belgrade : Serbian Chemical Society
C3  - 58th Meeting of the Serbian Chemical Society : Book of Abstracts and Proceedings
T1  - Procena efikasnosti uklanjanja teških metala iz vodenih rastvora i industrijske otpadne vode korišćenjem suncokretove ljuske kao biosorbenta
T1  - Evaluation of heavy metal removal efficiency from aqueous solutions and industrial wastewater using sunflower seed husk as a biosorbent
SP  - 164
EP  - 164
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12739
ER  - 

@conference{
author = "Radenković, Marina and Petrović, Jelena D. and Momčilović, Miloš and Živković, Sanja and Relić, Dubravka and Popović, Aleksandar",
year = "2022",
abstract = "U ovom radu korišćena je ljuska suncokreta za procenu efikasnosti uklanjanja teških metala iz vodenih rastvora. Na samom početku optimizovani su uslovi maksimalne adsorpcije teških metala u funkciji pH rastvora i vremena kontakta. Nakon toga, određena je efikasnost uklanjanja Ni iz uzorka otpadne vode korišćenjem suncokretove ljuske kao biosorbenta spektroskopijom laserski indukovane plazme (LIBS) i standardnom spektrohemijskom ICP-OES metodom. Rezultati su upoređeni, a dobijene vrednosti su u opsegu granica nesigurnosti LIBS metode., In this work, the sunflower husk was used to evaluate the removal efficiency of heavy metals from an aqueous solution. Firstly, the condition for maximum adsorption of heavy metals is optimized as a function of pH and contact time. Тhereafter, the removal efficiency of Ni from the industrial wastewater by the usage of the sunflower husk as a biosorbent was evaluated by laser-induced breakdown spectroscopy (LIBS), and by the standard spectrochemical ICP-OES method. The values obtained by these two methods were compared and the results are within the uncertainty of the LIBS method.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "58th Meeting of the Serbian Chemical Society : Book of Abstracts and Proceedings",
title = "Procena efikasnosti uklanjanja teških metala iz vodenih rastvora i industrijske otpadne vode korišćenjem suncokretove ljuske kao biosorbenta, Evaluation of heavy metal removal efficiency from aqueous solutions and industrial wastewater using sunflower seed husk as a biosorbent",
pages = "164-164",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12739"
}

Radenković, M., Petrović, J. D., Momčilović, M., Živković, S., Relić, D.,& Popović, A.. (2022). Procena efikasnosti uklanjanja teških metala iz vodenih rastvora i industrijske otpadne vode korišćenjem suncokretove ljuske kao biosorbenta. in 58th Meeting of the Serbian Chemical Society : Book of Abstracts and Proceedings
Belgrade : Serbian Chemical Society., 164-164.
https://hdl.handle.net/21.15107/rcub_vinar_12739

Radenković M, Petrović JD, Momčilović M, Živković S, Relić D, Popović A. Procena efikasnosti uklanjanja teških metala iz vodenih rastvora i industrijske otpadne vode korišćenjem suncokretove ljuske kao biosorbenta. in 58th Meeting of the Serbian Chemical Society : Book of Abstracts and Proceedings. 2022;:164-164.
https://hdl.handle.net/21.15107/rcub_vinar_12739 .

Radenković, Marina, Petrović, Jelena D., Momčilović, Miloš, Živković, Sanja, Relić, Dubravka, Popović, Aleksandar, "Procena efikasnosti uklanjanja teških metala iz vodenih rastvora i industrijske otpadne vode korišćenjem suncokretove ljuske kao biosorbenta" in 58th Meeting of the Serbian Chemical Society : Book of Abstracts and Proceedings (2022):164-164,
https://hdl.handle.net/21.15107/rcub_vinar_12739 .

TY  - JOUR
AU  - Radenković, Marina
AU  - Momčilović, Miloš
AU  - Petrović, Jelena
AU  - Mraković, Ana Đ.
AU  - Relić, Dubravka
AU  - Popović, Aleksandar
AU  - Živković, Sanja
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10467
AB  - Presented research aimed to develop an alternative approach for the estimation of biosorption capability of sunflower husk. The acid-pretreated sunflower biomass was characterized by scanning electron microscopy combined with energy dispersive X-Ray spectroscopy (SEM-EDX) analysis and Fourier transform infrared (FTIR) spectroscopy. Biosorption efficiency has been evaluated using inductively coupled plasma optical emission spectroscopy (ICP-OES) and laser-induced breakdown spectroscopy (LIBS). The adsorption capacity of the adsorbent was determined as the function of the pH of the solution, the initial concentration of heavy metal solutions, and contact time. The optimal conditions were achieved after 15 min of contact at pH 6, while the percentage of the removal was from 80.0–98.7 %, depending on the element. The results obtained from the kinetic and isotherm studies show that maximum adsorption of ions was quickly reached and followed the pseudo-second-order kinetic model. Real samples were tested and obtained Ni values by LIBS method were 3100±200 and 1240±100 mg kg-1, while estimated values by the ICP-OES were 2995±20 and 1130±10 mg kg-1, respectively. The obtained results prove that LIBS method can be used as a “green alternative” for the evaluation of biosorption efficiency.
T2  - Journal of the Serbian Chemical Society
T1  - Removal of heavy metals from aqueous media by sunflower husk: A comparative study of biosorption efficiency by using ICP-OES and LIBS
VL  - 87
IS  - 7-8
SP  - 939
EP  - 952
DO  - 10.2298/JSC220105022R
ER  - 

@article{
author = "Radenković, Marina and Momčilović, Miloš and Petrović, Jelena and Mraković, Ana Đ. and Relić, Dubravka and Popović, Aleksandar and Živković, Sanja",
year = "2022",
abstract = "Presented research aimed to develop an alternative approach for the estimation of biosorption capability of sunflower husk. The acid-pretreated sunflower biomass was characterized by scanning electron microscopy combined with energy dispersive X-Ray spectroscopy (SEM-EDX) analysis and Fourier transform infrared (FTIR) spectroscopy. Biosorption efficiency has been evaluated using inductively coupled plasma optical emission spectroscopy (ICP-OES) and laser-induced breakdown spectroscopy (LIBS). The adsorption capacity of the adsorbent was determined as the function of the pH of the solution, the initial concentration of heavy metal solutions, and contact time. The optimal conditions were achieved after 15 min of contact at pH 6, while the percentage of the removal was from 80.0–98.7 %, depending on the element. The results obtained from the kinetic and isotherm studies show that maximum adsorption of ions was quickly reached and followed the pseudo-second-order kinetic model. Real samples were tested and obtained Ni values by LIBS method were 3100±200 and 1240±100 mg kg-1, while estimated values by the ICP-OES were 2995±20 and 1130±10 mg kg-1, respectively. The obtained results prove that LIBS method can be used as a “green alternative” for the evaluation of biosorption efficiency.",
journal = "Journal of the Serbian Chemical Society",
title = "Removal of heavy metals from aqueous media by sunflower husk: A comparative study of biosorption efficiency by using ICP-OES and LIBS",
volume = "87",
number = "7-8",
pages = "939-952",
doi = "10.2298/JSC220105022R"
}

Radenković, M., Momčilović, M., Petrović, J., Mraković, A. Đ., Relić, D., Popović, A.,& Živković, S.. (2022). Removal of heavy metals from aqueous media by sunflower husk: A comparative study of biosorption efficiency by using ICP-OES and LIBS. in Journal of the Serbian Chemical Society, 87(7-8), 939-952.
https://doi.org/10.2298/JSC220105022R

Radenković M, Momčilović M, Petrović J, Mraković AĐ, Relić D, Popović A, Živković S. Removal of heavy metals from aqueous media by sunflower husk: A comparative study of biosorption efficiency by using ICP-OES and LIBS. in Journal of the Serbian Chemical Society. 2022;87(7-8):939-952.
doi:10.2298/JSC220105022R .

Radenković, Marina, Momčilović, Miloš, Petrović, Jelena, Mraković, Ana Đ., Relić, Dubravka, Popović, Aleksandar, Živković, Sanja, "Removal of heavy metals from aqueous media by sunflower husk: A comparative study of biosorption efficiency by using ICP-OES and LIBS" in Journal of the Serbian Chemical Society, 87, no. 7-8 (2022):939-952,
https://doi.org/10.2298/JSC220105022R . .

TY  - CONF
AU  - Radenković, Marina
AU  - Petrović, Jelena
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Relić, Dubravka
AU  - Popović, Aleksandar R.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12758
AB  - With the growth of the industrial world and the rise of anthropogenic activities, environmental challenges have also increased. Wastewater, especially from industrial sources can contain a wide variety of heavy metals [1]. The presence of heavy metals in water resources is a cause for concern due to their toxicity and tendency to bioaccumulation, which leads to significant problems for the environment as well as for animals and humans [2]. There are various conventional treatment technologies that are used for the removal of heavy metals from wastewater such as reverse osmosis, electrodialysis, ultrafiltration, industrial ion exchange process, and chemical precipitation. These techniques have some drawbacks such a being expensive due to high reagent and energy requirements, incomplete metal removal at low concentrations of heavy metals and generation of sludge [1]. Therefore, biosorption has been the subject of research by scientists for almost 70 years in order to find efficient, effective, and low-cost biomaterials for wastewater treatment [3]. In this study, a sunflower husk treated with 1% hydrochloric acid was used to evaluate removal efficiency for Ni from real wastewater samples, as well as to estimate the adsorption capacity as a function of contact time between the heavy metal ions such as Cd in the aqueous solution and the sunflower husk as a biosorbent. Two techniques were used for quantitative analysis, Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) as a standard reference method and laser-induced plasma spectroscopy (LIBS) as an innovative non-standard analytical method. What makes the LIBS superior from the other standard optical techniques is that it allows fast multi-elemental analysis without prior sample preparation, leads to minimal sample damage, and is considered almost non-destructive, this method is also by the principles of green analytical chemistry, which means that it does not use toxic reagents and therefore no chemical waste [4]. The results of these two methods were compared, to examine the possibility of using laser-induced plasma spectroscopy as an alternative green analytical technology for quantitative analysis of sunflower husk as a biosorbent and evaluation of biosorption efficiency as a function of contact time.
PB  - Belgrade : Serbian Chemical Society
C3  - 21st European Meeting on Environmental Chemistry : Book of Abstracts
T1  - Comparative Study of Removal Efficiency for Ni and Cd from Industrial Wastewater and Aqueous Solution by Sunflower Husk Using ICP-OES and LIBS
SP  - 100
EP  - 100
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12758
ER  - 

@conference{
author = "Radenković, Marina and Petrović, Jelena and Momčilović, Miloš and Živković, Sanja and Relić, Dubravka and Popović, Aleksandar R.",
year = "2021",
abstract = "With the growth of the industrial world and the rise of anthropogenic activities, environmental challenges have also increased. Wastewater, especially from industrial sources can contain a wide variety of heavy metals [1]. The presence of heavy metals in water resources is a cause for concern due to their toxicity and tendency to bioaccumulation, which leads to significant problems for the environment as well as for animals and humans [2]. There are various conventional treatment technologies that are used for the removal of heavy metals from wastewater such as reverse osmosis, electrodialysis, ultrafiltration, industrial ion exchange process, and chemical precipitation. These techniques have some drawbacks such a being expensive due to high reagent and energy requirements, incomplete metal removal at low concentrations of heavy metals and generation of sludge [1]. Therefore, biosorption has been the subject of research by scientists for almost 70 years in order to find efficient, effective, and low-cost biomaterials for wastewater treatment [3]. In this study, a sunflower husk treated with 1% hydrochloric acid was used to evaluate removal efficiency for Ni from real wastewater samples, as well as to estimate the adsorption capacity as a function of contact time between the heavy metal ions such as Cd in the aqueous solution and the sunflower husk as a biosorbent. Two techniques were used for quantitative analysis, Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) as a standard reference method and laser-induced plasma spectroscopy (LIBS) as an innovative non-standard analytical method. What makes the LIBS superior from the other standard optical techniques is that it allows fast multi-elemental analysis without prior sample preparation, leads to minimal sample damage, and is considered almost non-destructive, this method is also by the principles of green analytical chemistry, which means that it does not use toxic reagents and therefore no chemical waste [4]. The results of these two methods were compared, to examine the possibility of using laser-induced plasma spectroscopy as an alternative green analytical technology for quantitative analysis of sunflower husk as a biosorbent and evaluation of biosorption efficiency as a function of contact time.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "21st European Meeting on Environmental Chemistry : Book of Abstracts",
title = "Comparative Study of Removal Efficiency for Ni and Cd from Industrial Wastewater and Aqueous Solution by Sunflower Husk Using ICP-OES and LIBS",
pages = "100-100",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12758"
}

Radenković, M., Petrović, J., Momčilović, M., Živković, S., Relić, D.,& Popović, A. R.. (2021). Comparative Study of Removal Efficiency for Ni and Cd from Industrial Wastewater and Aqueous Solution by Sunflower Husk Using ICP-OES and LIBS. in 21st European Meeting on Environmental Chemistry : Book of Abstracts
Belgrade : Serbian Chemical Society., 100-100.
https://hdl.handle.net/21.15107/rcub_vinar_12758

Radenković M, Petrović J, Momčilović M, Živković S, Relić D, Popović AR. Comparative Study of Removal Efficiency for Ni and Cd from Industrial Wastewater and Aqueous Solution by Sunflower Husk Using ICP-OES and LIBS. in 21st European Meeting on Environmental Chemistry : Book of Abstracts. 2021;:100-100.
https://hdl.handle.net/21.15107/rcub_vinar_12758 .

Radenković, Marina, Petrović, Jelena, Momčilović, Miloš, Živković, Sanja, Relić, Dubravka, Popović, Aleksandar R., "Comparative Study of Removal Efficiency for Ni and Cd from Industrial Wastewater and Aqueous Solution by Sunflower Husk Using ICP-OES and LIBS" in 21st European Meeting on Environmental Chemistry : Book of Abstracts (2021):100-100,
https://hdl.handle.net/21.15107/rcub_vinar_12758 .