Vujasin, Radojka

Link to this page

Authority KeyName Variants
orcid::0000-0002-9859-5502
  • Vujasin, Radojka (19)
Projects

Author's Bibliography

Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye

Matović, Ljiljana; Vujasin, Radojka; Kumrić, Ksenija; Devečerski, Aleksandar; Wu, Yi-nan ; Kabtamu, Daniel M.; Mirković, Marija; Omerašević, Mia; Petrović, Đorđe

(2021)

TY  - JOUR
AU  - Matović, Ljiljana
AU  - Vujasin, Radojka
AU  - Kumrić, Ksenija
AU  - Devečerski, Aleksandar
AU  - Wu, Yi-nan 
AU  - Kabtamu, Daniel M.
AU  - Mirković, Marija
AU  - Omerašević, Mia
AU  - Petrović, Đorđe
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9791
AB  - Enhanced degradation of organic dye was achieved using two different kinds of waste materials: waste tire granules and spent sealed radioactive sources. Waste tire granules were used as raw material for the production of waste tire char (WTC), which was further utilized as an adsorbent matrix for synergetic adsorption/irradiation degradation of organic dye. The spent radioactive sources were radiographic sealed sources that originate from the industry which generate the high energy radiation. Methylene Blue (MB) was used as an organic model compound. Synthesized WTC has turbostratic structure, irregular shaped particles and developed mesoporous surface. Complete degradation of 0.02 dm3 of 100 mg dm−3 MB solution, having WTC dose of 1.25 g dm−3, was achieved with delivered doze of only 60 Gy. The applied doses were 100 times smaller than those presented in the literature. Degradation pathway was determined: OH radicals that originate from radiolysis of water and from the surface of WTC played the crucial role in the radiocatalytic degradation of MB. Breakage of the aromatic ring of MB appeared by the scission of the double C‒S+˭C bond as a result of the attack of OH species on adsorbed and electronically reorganized MB molecule. © 2020 Elsevier B.V.
T2  - Journal of Hazardous Materials
T1  - Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye
VL  - 408
DO  - 10.1016/j.jhazmat.2020.124922
ER  - 
@article{
author = "Matović, Ljiljana and Vujasin, Radojka and Kumrić, Ksenija and Devečerski, Aleksandar and Wu, Yi-nan  and Kabtamu, Daniel M. and Mirković, Marija and Omerašević, Mia and Petrović, Đorđe",
year = "2021",
abstract = "Enhanced degradation of organic dye was achieved using two different kinds of waste materials: waste tire granules and spent sealed radioactive sources. Waste tire granules were used as raw material for the production of waste tire char (WTC), which was further utilized as an adsorbent matrix for synergetic adsorption/irradiation degradation of organic dye. The spent radioactive sources were radiographic sealed sources that originate from the industry which generate the high energy radiation. Methylene Blue (MB) was used as an organic model compound. Synthesized WTC has turbostratic structure, irregular shaped particles and developed mesoporous surface. Complete degradation of 0.02 dm3 of 100 mg dm−3 MB solution, having WTC dose of 1.25 g dm−3, was achieved with delivered doze of only 60 Gy. The applied doses were 100 times smaller than those presented in the literature. Degradation pathway was determined: OH radicals that originate from radiolysis of water and from the surface of WTC played the crucial role in the radiocatalytic degradation of MB. Breakage of the aromatic ring of MB appeared by the scission of the double C‒S+˭C bond as a result of the attack of OH species on adsorbed and electronically reorganized MB molecule. © 2020 Elsevier B.V.",
journal = "Journal of Hazardous Materials",
title = "Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye",
volume = "408",
doi = "10.1016/j.jhazmat.2020.124922"
}
Matović, L., Vujasin, R., Kumrić, K., Devečerski, A., Wu, Y., Kabtamu, D. M., Mirković, M., Omerašević, M.,& Petrović, Đ.. (2021). Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye. in Journal of Hazardous Materials, 408.
https://doi.org/10.1016/j.jhazmat.2020.124922
Matović L, Vujasin R, Kumrić K, Devečerski A, Wu Y, Kabtamu DM, Mirković M, Omerašević M, Petrović Đ. Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye. in Journal of Hazardous Materials. 2021;408.
doi:10.1016/j.jhazmat.2020.124922 .
Matović, Ljiljana, Vujasin, Radojka, Kumrić, Ksenija, Devečerski, Aleksandar, Wu, Yi-nan , Kabtamu, Daniel M., Mirković, Marija, Omerašević, Mia, Petrović, Đorđe, "Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye" in Journal of Hazardous Materials, 408 (2021),
https://doi.org/10.1016/j.jhazmat.2020.124922 . .
1

Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy

Matović, Ljiljana; Vujasin, Radojka; Kumrić, Ksenija; Krstić, Sanja S.; Wu, Yi-nan; Kabtamu, Daniel Manaye; Devečerski, Aleksandar

(2021)

TY  - JOUR
AU  - Matović, Ljiljana
AU  - Vujasin, Radojka
AU  - Kumrić, Ksenija
AU  - Krstić, Sanja S.
AU  - Wu, Yi-nan
AU  - Kabtamu, Daniel Manaye
AU  - Devečerski, Aleksandar
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9545
AB  - Development of method for the complete conversion of Cr-containing electroplating sludge (ES) into the black inorganic pigment was presented. Difficulties related to the ES complex, variable composition and inhomogeneity, where the dominant presence of Cr was followed by: Fe, P, Zn, Ni, Cu, etc., can be overcome by determination of the precise amount of Fe2O3 necessary to be added in order to firmly embed all the heavy metals into the pigment structure (i.e. the Fe0.7Cr1.3O3/FePO4 nanocomposite), taking care not only about weight/molar ratios, but also about average particle size, apparent densities, and volume fraction of the starting materials. As a source of Fe2O3, commercial (p.a.) Fe2O3 and two different Fe-wastes were used, thus completely fulfilling the principles of the circular economy. The obtained black inorganic pigments have consistent composition, no leaching of toxic metals, color (CIE L-a-b-values) comparable with those of commercial pigments and thus have the potential commercial large scale application. © 2021 Elsevier Ltd.
T2  - Journal of Environmental Chemical Engineering
T1  - Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy
VL  - 9
IS  - 1
SP  - 105038
DO  - 10.1016/j.jece.2021.105038
ER  - 
@article{
author = "Matović, Ljiljana and Vujasin, Radojka and Kumrić, Ksenija and Krstić, Sanja S. and Wu, Yi-nan and Kabtamu, Daniel Manaye and Devečerski, Aleksandar",
year = "2021",
abstract = "Development of method for the complete conversion of Cr-containing electroplating sludge (ES) into the black inorganic pigment was presented. Difficulties related to the ES complex, variable composition and inhomogeneity, where the dominant presence of Cr was followed by: Fe, P, Zn, Ni, Cu, etc., can be overcome by determination of the precise amount of Fe2O3 necessary to be added in order to firmly embed all the heavy metals into the pigment structure (i.e. the Fe0.7Cr1.3O3/FePO4 nanocomposite), taking care not only about weight/molar ratios, but also about average particle size, apparent densities, and volume fraction of the starting materials. As a source of Fe2O3, commercial (p.a.) Fe2O3 and two different Fe-wastes were used, thus completely fulfilling the principles of the circular economy. The obtained black inorganic pigments have consistent composition, no leaching of toxic metals, color (CIE L-a-b-values) comparable with those of commercial pigments and thus have the potential commercial large scale application. © 2021 Elsevier Ltd.",
journal = "Journal of Environmental Chemical Engineering",
title = "Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy",
volume = "9",
number = "1",
pages = "105038",
doi = "10.1016/j.jece.2021.105038"
}
Matović, L., Vujasin, R., Kumrić, K., Krstić, S. S., Wu, Y., Kabtamu, D. M.,& Devečerski, A.. (2021). Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy. in Journal of Environmental Chemical Engineering, 9(1), 105038.
https://doi.org/10.1016/j.jece.2021.105038
Matović L, Vujasin R, Kumrić K, Krstić SS, Wu Y, Kabtamu DM, Devečerski A. Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy. in Journal of Environmental Chemical Engineering. 2021;9(1):105038.
doi:10.1016/j.jece.2021.105038 .
Matović, Ljiljana, Vujasin, Radojka, Kumrić, Ksenija, Krstić, Sanja S., Wu, Yi-nan, Kabtamu, Daniel Manaye, Devečerski, Aleksandar, "Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy" in Journal of Environmental Chemical Engineering, 9, no. 1 (2021):105038,
https://doi.org/10.1016/j.jece.2021.105038 . .
4
3
3

Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples

Kumrić, Ksenija; Vujasin, Radojka; Egerić, Marija; Petrović, Đorđe; Devečerski, Aleksandar; Matović, Ljiljana

(2019)

TY  - JOUR
AU  - Kumrić, Ksenija
AU  - Vujasin, Radojka
AU  - Egerić, Marija
AU  - Petrović, Đorđe
AU  - Devečerski, Aleksandar
AU  - Matović, Ljiljana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8678
AB  - Solid-phase extraction (SPE) on activated carbon derived from coconut shell (CSAC) for the preconcentration of four varying polarity pesticides (imidacloprid, acetamiprid, simazine, and linuron) prior to their determination using high performance liquid chromatography with diode array detector (HPLC-DAD) was investigated. The characteristics of the CSAC were analyzed through X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and Brunauer-Emmett-Teller (BET) method. The effects of the solution pH, eluent type, eluent volume, and flow rate were investigated for optimization of the presented procedure. The adsorption was achieved quantitatively on the CSAC column in the pH range of 2.0–7.0, and then the retained pesticides were eluted with dichloromethane. The detection limit was found to be 0.025–0.039 μg L−1, depending on the pesticide. The proposed SPE-CSAC method was used to determine selected pesticides in tap water samples. The recoveries ranged from 58.2 to 105.3%, with low relative standard deviations. The obtained results indicated that the CSAC could be efficiently used as a low cost alternative to commercially available SPE adsorbents for the determination of the varying polarity pesticides in environmental water samples at trace levels. © 2019, Springer Nature Switzerland AG.
T2  - Water, Air, & Soil Pollution
T1  - Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples
VL  - 230
IS  - 12
SP  - 302
DO  - 10.1007/s11270-019-4359-7
ER  - 
@article{
author = "Kumrić, Ksenija and Vujasin, Radojka and Egerić, Marija and Petrović, Đorđe and Devečerski, Aleksandar and Matović, Ljiljana",
year = "2019",
abstract = "Solid-phase extraction (SPE) on activated carbon derived from coconut shell (CSAC) for the preconcentration of four varying polarity pesticides (imidacloprid, acetamiprid, simazine, and linuron) prior to their determination using high performance liquid chromatography with diode array detector (HPLC-DAD) was investigated. The characteristics of the CSAC were analyzed through X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and Brunauer-Emmett-Teller (BET) method. The effects of the solution pH, eluent type, eluent volume, and flow rate were investigated for optimization of the presented procedure. The adsorption was achieved quantitatively on the CSAC column in the pH range of 2.0–7.0, and then the retained pesticides were eluted with dichloromethane. The detection limit was found to be 0.025–0.039 μg L−1, depending on the pesticide. The proposed SPE-CSAC method was used to determine selected pesticides in tap water samples. The recoveries ranged from 58.2 to 105.3%, with low relative standard deviations. The obtained results indicated that the CSAC could be efficiently used as a low cost alternative to commercially available SPE adsorbents for the determination of the varying polarity pesticides in environmental water samples at trace levels. © 2019, Springer Nature Switzerland AG.",
journal = "Water, Air, & Soil Pollution",
title = "Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples",
volume = "230",
number = "12",
pages = "302",
doi = "10.1007/s11270-019-4359-7"
}
Kumrić, K., Vujasin, R., Egerić, M., Petrović, Đ., Devečerski, A.,& Matović, L.. (2019). Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples. in Water, Air, & Soil Pollution, 230(12), 302.
https://doi.org/10.1007/s11270-019-4359-7
Kumrić K, Vujasin R, Egerić M, Petrović Đ, Devečerski A, Matović L. Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples. in Water, Air, & Soil Pollution. 2019;230(12):302.
doi:10.1007/s11270-019-4359-7 .
Kumrić, Ksenija, Vujasin, Radojka, Egerić, Marija, Petrović, Đorđe, Devečerski, Aleksandar, Matović, Ljiljana, "Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples" in Water, Air, & Soil Pollution, 230, no. 12 (2019):302,
https://doi.org/10.1007/s11270-019-4359-7 . .
1
2
1
2

Teorijsko i eksperimentalno istraživanje uticaja TiO2 na sorpciju vodonika u MgH2/Mg sistemu

Vujasin, Radojka

(Универзитет у Београду, Факултет за физичку хемију, 2017)

TY  - THES
AU  - Vujasin, Radojka
PY  - 2017
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=5158
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:16014/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=49205775
UR  - http://nardus.mpn.gov.rs/123456789/8456
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7322
AB  - Magnezijum hidrid, materijal pogodan za skladištenje vodonika zbog velikegravimetrijske i zapreminske gustine, niske cene i netoksičnosti, još nije našao širokuindustrijsku primenu usled velike termodinamičke stabilnosti i visoke temperaturedesorpcije vodonika (447°C). Nepovoljna termodinamika i spora kinetika sorpcije semože poboljšati dodatkom aditiva što destabiliše kristalnu rešetku MgH2. U okviru ovedoktorske disertacije urađena su teorijska i eksperimentalna ispitivanja magnezijumhidrida dopiranog titan dioksidom. Cilj je razumevanje uticaja aditiva i međufaznegranice metal/hidrid, koja nastaje u procesu prodiranja vodonika u potpovršinskeslojeve, na mehanizam i reakciju desorpcije vodonika.Kompoziti MgH2-TiO2 sa 10 mas.% anataz i rutil TiO2, su sintetisanimehaničkim mlevenjem u toku 10 i 20h. Različite polimorfne forme su korišćene kakobi se ispitao njihov uticaj na desorpcione karakteristike MgH2. Dekompozicija hidrida jepraćena diferencijalnom termijskom analizom i odvija se u tri stupnja.Srednjetemperaturski pikovi se pojavljuju zbog katalitičkog uticaja dopanta, a najnižatemperatura 380°C je dobijena za uzorak sa rutil TiO2 mlevenim 10h, dok je zakompozit sa anataznom fazom koji je mleven 20h temperatura daleko viša, 412°C.Proces desorpcije se najbolje opisuje Avrami-Erofejevim kinetičkim modelom za n=4,što isključuje difuziju, a upućuje na procese nukleacije i promene dimenzionalnostikristala kao odlučujuće procese za desorpciju. Zaključeno je da kristalna strukturadopanta igra presudnu ulogu u ubrzanju reakcije desorpcije.Interakcija vodonika sa (110) površinom rutil TiO2, ispitivana teorijomfunkcionala gustine, pokazuje da atomski slojevi paralelni površini koji sadrže atome Tii O deluju kao barijere za prolazak vodonika ka dubini materijala. Između ovih slojevasu oblasti osiromašene naelektrisanjem u kojima atom H lako prelazi sa jednog na drugiatom O. Potvrđeno je i da se uticaj površine može ograničiti na nekoliko atomskihslojeva koji su joj najbliži.Simulacije ponašanja sistema međufazne granice MgH2/Mg dopirane Ti i TiO2su pokazale da je formiranje defekata energijski povoljniji proces, s tim što je sistemdopiran sa TiO2 stabilniji. Praćenje mobilnosti vodonika u blizini međufazne granicehidrid/metal na različitim temperaturama pokazuje da difuzija vodonika u sistemudopiranom Ti počinje na 127°C, a u sistemu sa TiO2 nema primetne difuzije čak i navišim temperaturama. Kiseonik u blizini Ti kao izrazitiji akceptor elektrona posrednoutiče na skraćenje Ti-H veze, i samim tim smanjuje mobilnost vodonika u blizinidopanta...
PB  - Универзитет у Београду, Факултет за физичку хемију
T2  - Универзитет у Београду
T1  - Teorijsko i eksperimentalno istraživanje uticaja TiO2 na sorpciju vodonika u MgH2/Mg sistemu
UR  - https://hdl.handle.net/21.15107/rcub_nardus_8456
ER  - 
@phdthesis{
author = "Vujasin, Radojka",
year = "2017",
abstract = "Magnezijum hidrid, materijal pogodan za skladištenje vodonika zbog velikegravimetrijske i zapreminske gustine, niske cene i netoksičnosti, još nije našao širokuindustrijsku primenu usled velike termodinamičke stabilnosti i visoke temperaturedesorpcije vodonika (447°C). Nepovoljna termodinamika i spora kinetika sorpcije semože poboljšati dodatkom aditiva što destabiliše kristalnu rešetku MgH2. U okviru ovedoktorske disertacije urađena su teorijska i eksperimentalna ispitivanja magnezijumhidrida dopiranog titan dioksidom. Cilj je razumevanje uticaja aditiva i međufaznegranice metal/hidrid, koja nastaje u procesu prodiranja vodonika u potpovršinskeslojeve, na mehanizam i reakciju desorpcije vodonika.Kompoziti MgH2-TiO2 sa 10 mas.% anataz i rutil TiO2, su sintetisanimehaničkim mlevenjem u toku 10 i 20h. Različite polimorfne forme su korišćene kakobi se ispitao njihov uticaj na desorpcione karakteristike MgH2. Dekompozicija hidrida jepraćena diferencijalnom termijskom analizom i odvija se u tri stupnja.Srednjetemperaturski pikovi se pojavljuju zbog katalitičkog uticaja dopanta, a najnižatemperatura 380°C je dobijena za uzorak sa rutil TiO2 mlevenim 10h, dok je zakompozit sa anataznom fazom koji je mleven 20h temperatura daleko viša, 412°C.Proces desorpcije se najbolje opisuje Avrami-Erofejevim kinetičkim modelom za n=4,što isključuje difuziju, a upućuje na procese nukleacije i promene dimenzionalnostikristala kao odlučujuće procese za desorpciju. Zaključeno je da kristalna strukturadopanta igra presudnu ulogu u ubrzanju reakcije desorpcije.Interakcija vodonika sa (110) površinom rutil TiO2, ispitivana teorijomfunkcionala gustine, pokazuje da atomski slojevi paralelni površini koji sadrže atome Tii O deluju kao barijere za prolazak vodonika ka dubini materijala. Između ovih slojevasu oblasti osiromašene naelektrisanjem u kojima atom H lako prelazi sa jednog na drugiatom O. Potvrđeno je i da se uticaj površine može ograničiti na nekoliko atomskihslojeva koji su joj najbliži.Simulacije ponašanja sistema međufazne granice MgH2/Mg dopirane Ti i TiO2su pokazale da je formiranje defekata energijski povoljniji proces, s tim što je sistemdopiran sa TiO2 stabilniji. Praćenje mobilnosti vodonika u blizini međufazne granicehidrid/metal na različitim temperaturama pokazuje da difuzija vodonika u sistemudopiranom Ti počinje na 127°C, a u sistemu sa TiO2 nema primetne difuzije čak i navišim temperaturama. Kiseonik u blizini Ti kao izrazitiji akceptor elektrona posrednoutiče na skraćenje Ti-H veze, i samim tim smanjuje mobilnost vodonika u blizinidopanta...",
publisher = "Универзитет у Београду, Факултет за физичку хемију",
journal = "Универзитет у Београду",
title = "Teorijsko i eksperimentalno istraživanje uticaja TiO2 na sorpciju vodonika u MgH2/Mg sistemu",
url = "https://hdl.handle.net/21.15107/rcub_nardus_8456"
}
Vujasin, R.. (2017). Teorijsko i eksperimentalno istraživanje uticaja TiO2 na sorpciju vodonika u MgH2/Mg sistemu. in Универзитет у Београду
Универзитет у Београду, Факултет за физичку хемију..
https://hdl.handle.net/21.15107/rcub_nardus_8456
Vujasin R. Teorijsko i eksperimentalno istraživanje uticaja TiO2 na sorpciju vodonika u MgH2/Mg sistemu. in Универзитет у Београду. 2017;.
https://hdl.handle.net/21.15107/rcub_nardus_8456 .
Vujasin, Radojka, "Teorijsko i eksperimentalno istraživanje uticaja TiO2 na sorpciju vodonika u MgH2/Mg sistemu" in Универзитет у Београду (2017),
https://hdl.handle.net/21.15107/rcub_nardus_8456 .

Ab-initio study of hydrogen mobility in the vicinity of MgH2-Mg interface: The role of Ti and TiO2

Vujasin, Radojka; Grbović-Novaković, Jasmina; Novaković, Nikola; Giusepponi, Simone; Celino, Massimo

(2017)

TY  - JOUR
AU  - Vujasin, Radojka
AU  - Grbović-Novaković, Jasmina
AU  - Novaković, Nikola
AU  - Giusepponi, Simone
AU  - Celino, Massimo
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1382
AB  - Doping of MgH2 with transition metals and their oxides is well-known procedure to improve its hydrogen (de) sorption properties, namely to lower the temperature of desorption and to achieve the kinetics speedup. In order to assess the influence Ti and TiO2 doping has on H mobility and to characterize structurally and electronically observed differences, MgH2-Mg interface doped with both Ti and TiO2 have been studied using ab-initio interface molecular dynamics and bulk calculations. Results suggest different mechanisms of MgH2 structure destabilization. The presence of dopants significantly stabilize MgH2-Mg interface, which is confirmed by work of adhesion computation. Calculated formation energies show that interface system with doped TiO2 is more stable. In terms of H mobility, molecular dynamics simulations confirm that Ti doping is more effective than TiO2 in lowering the desorption temperature. The mobility of hydrogen atoms close to dopant is much higher in the case of Ti than in the case of TiO2. Electronic structure characterization reveals that oxygen atoms with high electron affinity forms more pronounced ionic bonding with Ti and the other neighbor Mg atoms. This in turn cause a shorter Ti-H bonds in first coordination than in the case of Ti doping and further reduction of H atoms mobility. This is in accordance with molecular dynamics predictions. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Ab-initio study of hydrogen mobility in the vicinity of MgH2-Mg interface: The role of Ti and TiO2
VL  - 696
SP  - 548
EP  - 559
DO  - 10.1016/j.jallcom.2016.11.250
ER  - 
@article{
author = "Vujasin, Radojka and Grbović-Novaković, Jasmina and Novaković, Nikola and Giusepponi, Simone and Celino, Massimo",
year = "2017",
abstract = "Doping of MgH2 with transition metals and their oxides is well-known procedure to improve its hydrogen (de) sorption properties, namely to lower the temperature of desorption and to achieve the kinetics speedup. In order to assess the influence Ti and TiO2 doping has on H mobility and to characterize structurally and electronically observed differences, MgH2-Mg interface doped with both Ti and TiO2 have been studied using ab-initio interface molecular dynamics and bulk calculations. Results suggest different mechanisms of MgH2 structure destabilization. The presence of dopants significantly stabilize MgH2-Mg interface, which is confirmed by work of adhesion computation. Calculated formation energies show that interface system with doped TiO2 is more stable. In terms of H mobility, molecular dynamics simulations confirm that Ti doping is more effective than TiO2 in lowering the desorption temperature. The mobility of hydrogen atoms close to dopant is much higher in the case of Ti than in the case of TiO2. Electronic structure characterization reveals that oxygen atoms with high electron affinity forms more pronounced ionic bonding with Ti and the other neighbor Mg atoms. This in turn cause a shorter Ti-H bonds in first coordination than in the case of Ti doping and further reduction of H atoms mobility. This is in accordance with molecular dynamics predictions. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Ab-initio study of hydrogen mobility in the vicinity of MgH2-Mg interface: The role of Ti and TiO2",
volume = "696",
pages = "548-559",
doi = "10.1016/j.jallcom.2016.11.250"
}
Vujasin, R., Grbović-Novaković, J., Novaković, N., Giusepponi, S.,& Celino, M.. (2017). Ab-initio study of hydrogen mobility in the vicinity of MgH2-Mg interface: The role of Ti and TiO2. in Journal of Alloys and Compounds, 696, 548-559.
https://doi.org/10.1016/j.jallcom.2016.11.250
Vujasin R, Grbović-Novaković J, Novaković N, Giusepponi S, Celino M. Ab-initio study of hydrogen mobility in the vicinity of MgH2-Mg interface: The role of Ti and TiO2. in Journal of Alloys and Compounds. 2017;696:548-559.
doi:10.1016/j.jallcom.2016.11.250 .
Vujasin, Radojka, Grbović-Novaković, Jasmina, Novaković, Nikola, Giusepponi, Simone, Celino, Massimo, "Ab-initio study of hydrogen mobility in the vicinity of MgH2-Mg interface: The role of Ti and TiO2" in Journal of Alloys and Compounds, 696 (2017):548-559,
https://doi.org/10.1016/j.jallcom.2016.11.250 . .
5
5

Fast hydrogen sorption from MgH2-VO2(B) composite materials

Milošević, Sanja S.; Kurko, Sandra V.; Pasquini, Luca; Matović, Ljiljana; Vujasin, Radojka; Novaković, Nikola; Grbović-Novaković, Jasmina

(2016)

TY  - JOUR
AU  - Milošević, Sanja S.
AU  - Kurko, Sandra V.
AU  - Pasquini, Luca
AU  - Matović, Ljiljana
AU  - Vujasin, Radojka
AU  - Novaković, Nikola
AU  - Grbović-Novaković, Jasmina
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/274
AB  - The hydrogen sorption kinetics of MgH2-VO2(B) composites synthesised by mechanical milling have been studied. The microstructural properties of composites were characterized by means of X-ray diffraction (XRD), Raman spectroscopy, Scanning electron microscopy (SEM), Particle size analysis (PSD), while sorption behaviour was followed by differential scanning calorimetry (DSC) and Sievert measurements. Results have shown that although desorption temperature reduction is moderate; there is a substantial improvement in hydrogen sorption kinetics. The complete desorption of pure MgH2 at elevated temperature takes place in more than 30 min while the composite fully desorbs in less than 2 min even at lower temperatures. It has been shown that the metastable gamma-MgH2 phase and the point defects have a decisive role in desorption process only in the first sorption cycle, while the second and the subsequent sorption cycles are affected by microstructural and morphological characteristics of the composite. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Journal of Power Sources
T1  - Fast hydrogen sorption from MgH2-VO2(B) composite materials
VL  - 307
SP  - 481
EP  - 488
DO  - 10.1016/j.jpowsour.2015.12.108
ER  - 
@article{
author = "Milošević, Sanja S. and Kurko, Sandra V. and Pasquini, Luca and Matović, Ljiljana and Vujasin, Radojka and Novaković, Nikola and Grbović-Novaković, Jasmina",
year = "2016",
abstract = "The hydrogen sorption kinetics of MgH2-VO2(B) composites synthesised by mechanical milling have been studied. The microstructural properties of composites were characterized by means of X-ray diffraction (XRD), Raman spectroscopy, Scanning electron microscopy (SEM), Particle size analysis (PSD), while sorption behaviour was followed by differential scanning calorimetry (DSC) and Sievert measurements. Results have shown that although desorption temperature reduction is moderate; there is a substantial improvement in hydrogen sorption kinetics. The complete desorption of pure MgH2 at elevated temperature takes place in more than 30 min while the composite fully desorbs in less than 2 min even at lower temperatures. It has been shown that the metastable gamma-MgH2 phase and the point defects have a decisive role in desorption process only in the first sorption cycle, while the second and the subsequent sorption cycles are affected by microstructural and morphological characteristics of the composite. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Journal of Power Sources",
title = "Fast hydrogen sorption from MgH2-VO2(B) composite materials",
volume = "307",
pages = "481-488",
doi = "10.1016/j.jpowsour.2015.12.108"
}
Milošević, S. S., Kurko, S. V., Pasquini, L., Matović, L., Vujasin, R., Novaković, N.,& Grbović-Novaković, J.. (2016). Fast hydrogen sorption from MgH2-VO2(B) composite materials. in Journal of Power Sources, 307, 481-488.
https://doi.org/10.1016/j.jpowsour.2015.12.108
Milošević SS, Kurko SV, Pasquini L, Matović L, Vujasin R, Novaković N, Grbović-Novaković J. Fast hydrogen sorption from MgH2-VO2(B) composite materials. in Journal of Power Sources. 2016;307:481-488.
doi:10.1016/j.jpowsour.2015.12.108 .
Milošević, Sanja S., Kurko, Sandra V., Pasquini, Luca, Matović, Ljiljana, Vujasin, Radojka, Novaković, Nikola, Grbović-Novaković, Jasmina, "Fast hydrogen sorption from MgH2-VO2(B) composite materials" in Journal of Power Sources, 307 (2016):481-488,
https://doi.org/10.1016/j.jpowsour.2015.12.108 . .
54
52
52

Catalytic activity of titania polymorphs towards desorption reaction of MgH2

Vujasin, Radojka; Mraković, Ana Đ.; Kurko, Sandra V.; Novaković, Nikola; Matović, Ljiljana; Grbović-Novaković, Jasmina; Milošević, Sanja S.

(Elsevier, 2016)

TY  - JOUR
AU  - Vujasin, Radojka
AU  - Mraković, Ana Đ.
AU  - Kurko, Sandra V.
AU  - Novaković, Nikola
AU  - Matović, Ljiljana
AU  - Grbović-Novaković, Jasmina
AU  - Milošević, Sanja S.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/978
AB  - Hydrogen desorption properties of MgH2 ball milled with two different TiO2 polymorphs, rutile and anatase, were studied. Structural characterization has been done by X-ray diffraction (XRD) analysis, particle size analysis (PSD) and scanning electron microscopy (SEM). The mechanism of desorption and the apparent activation energy for desorption were investigated by applying isoconversional kinetic analysis of DTA spectra, while desorbed species were followed by TPD coupled with mass spectroscopy. It has been demonstrate that the addition of rutile TiO2 significantly decrease the apparent activation energy for desorption (E-des(a)), while addition of anatase titania has negligible influence on E-des(a). Such behaviour could be explained in terms of the same crystal structure of rutile TiO2 and MgH2. Further, the mechanism of desorption changes from Avrami-Erofeev n = 3 for pure MgH2 to Avrami Erofeev n = 4 for composite materials. Copyright (c) 2016, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - International Journal of Hydrogen Energy
T1  - Catalytic activity of titania polymorphs towards desorption reaction of MgH2
VL  - 41
IS  - 8
SP  - 4703
EP  - 4711
DO  - 10.1016/j.ijhydene.2016.01.095
ER  - 
@article{
author = "Vujasin, Radojka and Mraković, Ana Đ. and Kurko, Sandra V. and Novaković, Nikola and Matović, Ljiljana and Grbović-Novaković, Jasmina and Milošević, Sanja S.",
year = "2016",
abstract = "Hydrogen desorption properties of MgH2 ball milled with two different TiO2 polymorphs, rutile and anatase, were studied. Structural characterization has been done by X-ray diffraction (XRD) analysis, particle size analysis (PSD) and scanning electron microscopy (SEM). The mechanism of desorption and the apparent activation energy for desorption were investigated by applying isoconversional kinetic analysis of DTA spectra, while desorbed species were followed by TPD coupled with mass spectroscopy. It has been demonstrate that the addition of rutile TiO2 significantly decrease the apparent activation energy for desorption (E-des(a)), while addition of anatase titania has negligible influence on E-des(a). Such behaviour could be explained in terms of the same crystal structure of rutile TiO2 and MgH2. Further, the mechanism of desorption changes from Avrami-Erofeev n = 3 for pure MgH2 to Avrami Erofeev n = 4 for composite materials. Copyright (c) 2016, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "International Journal of Hydrogen Energy",
title = "Catalytic activity of titania polymorphs towards desorption reaction of MgH2",
volume = "41",
number = "8",
pages = "4703-4711",
doi = "10.1016/j.ijhydene.2016.01.095"
}
Vujasin, R., Mraković, A. Đ., Kurko, S. V., Novaković, N., Matović, L., Grbović-Novaković, J.,& Milošević, S. S.. (2016). Catalytic activity of titania polymorphs towards desorption reaction of MgH2. in International Journal of Hydrogen Energy
Elsevier., 41(8), 4703-4711.
https://doi.org/10.1016/j.ijhydene.2016.01.095
Vujasin R, Mraković AĐ, Kurko SV, Novaković N, Matović L, Grbović-Novaković J, Milošević SS. Catalytic activity of titania polymorphs towards desorption reaction of MgH2. in International Journal of Hydrogen Energy. 2016;41(8):4703-4711.
doi:10.1016/j.ijhydene.2016.01.095 .
Vujasin, Radojka, Mraković, Ana Đ., Kurko, Sandra V., Novaković, Nikola, Matović, Ljiljana, Grbović-Novaković, Jasmina, Milošević, Sanja S., "Catalytic activity of titania polymorphs towards desorption reaction of MgH2" in International Journal of Hydrogen Energy, 41, no. 8 (2016):4703-4711,
https://doi.org/10.1016/j.ijhydene.2016.01.095 . .
8
8
8

Hydrogen desorption from vacant MgH2

Kurko, Sandra V.; Vujasin, Radojka; Đukić, Anđelka B.; Paskaš Mamula, Bojana; Grbović-Novaković, Jasmina; Novaković, Nikola

(Society of Physical Chemists of Serbia, 2014)

TY  - CONF
AU  - Kurko, Sandra V.
AU  - Vujasin, Radojka
AU  - Đukić, Anđelka B.
AU  - Paskaš Mamula, Bojana
AU  - Grbović-Novaković, Jasmina
AU  - Novaković, Nikola
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9239
AB  - The hydrogen desorption properties of vacant MgH2 structure were
investigated both experimentally and theoretically. Ion irradiation by Ar8+
and Xe8+ ions were used to induce structural changes in MgH2. Hydrogen
desorption properties were investigated by temperature programmed
desorption (TPD). To obtained deeper insight in structural changes during
desorption theoretical calculations were performed using DFT approach
within Abinit code. Results showed that there are several mechanisms
involved in desorption process, which depend on defect concentration, their
position and their interaction and ordering. It has been demonstrated that the
changes in near-surface area play the crucial role in desorption kinetics.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Hydrogen desorption from vacant MgH2
VL  - H-26-P
ER  - 
@conference{
author = "Kurko, Sandra V. and Vujasin, Radojka and Đukić, Anđelka B. and Paskaš Mamula, Bojana and Grbović-Novaković, Jasmina and Novaković, Nikola",
year = "2014",
abstract = "The hydrogen desorption properties of vacant MgH2 structure were
investigated both experimentally and theoretically. Ion irradiation by Ar8+
and Xe8+ ions were used to induce structural changes in MgH2. Hydrogen
desorption properties were investigated by temperature programmed
desorption (TPD). To obtained deeper insight in structural changes during
desorption theoretical calculations were performed using DFT approach
within Abinit code. Results showed that there are several mechanisms
involved in desorption process, which depend on defect concentration, their
position and their interaction and ordering. It has been demonstrated that the
changes in near-surface area play the crucial role in desorption kinetics.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Hydrogen desorption from vacant MgH2",
volume = "H-26-P"
}
Kurko, S. V., Vujasin, R., Đukić, A. B., Paskaš Mamula, B., Grbović-Novaković, J.,& Novaković, N.. (2014). Hydrogen desorption from vacant MgH2. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., H-26-P.
Kurko SV, Vujasin R, Đukić AB, Paskaš Mamula B, Grbović-Novaković J, Novaković N. Hydrogen desorption from vacant MgH2. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;H-26-P..
Kurko, Sandra V., Vujasin, Radojka, Đukić, Anđelka B., Paskaš Mamula, Bojana, Grbović-Novaković, Jasmina, Novaković, Nikola, "Hydrogen desorption from vacant MgH2" in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, H-26-P (2014).

Near-surface hydrogen dynamics in titania

Vujasin, Radojka; Paskaš Mamula, Bojana; Milanović, Igor; Grbović-Novaković, Jasmina; Novaković, Nikola

(Society of Physical Chemists of Serbia, 2014)

TY  - CONF
AU  - Vujasin, Radojka
AU  - Paskaš Mamula, Bojana
AU  - Milanović, Igor
AU  - Grbović-Novaković, Jasmina
AU  - Novaković, Nikola
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9220
AB  - The hydrogen interaction with the TiO2 (110) surface has been investigated
using pseudopotential and PAW methods with addition of U Hubbard term.
The hydrogen diffusion behavior and thermodynamic properties were
calculated by means of full relaxation of structure in every step of bulk
diffusion. The results show the existence of potential barriers close to every
atomic layer, the trends of barriers and overall system energy lowering away
from surface and the occurrence of preferential H sites within each
interlayer basin. These findings go in favor of previously experimental
findings of TiO2 low surface H coverage and observed easy diffusion of
hydrogen from reduced surface into the TiO2 bulk or at least in near surface
region.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Near-surface hydrogen dynamics in titania
VL  - I-07-P
ER  - 
@conference{
author = "Vujasin, Radojka and Paskaš Mamula, Bojana and Milanović, Igor and Grbović-Novaković, Jasmina and Novaković, Nikola",
year = "2014",
abstract = "The hydrogen interaction with the TiO2 (110) surface has been investigated
using pseudopotential and PAW methods with addition of U Hubbard term.
The hydrogen diffusion behavior and thermodynamic properties were
calculated by means of full relaxation of structure in every step of bulk
diffusion. The results show the existence of potential barriers close to every
atomic layer, the trends of barriers and overall system energy lowering away
from surface and the occurrence of preferential H sites within each
interlayer basin. These findings go in favor of previously experimental
findings of TiO2 low surface H coverage and observed easy diffusion of
hydrogen from reduced surface into the TiO2 bulk or at least in near surface
region.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Near-surface hydrogen dynamics in titania",
volume = "I-07-P"
}
Vujasin, R., Paskaš Mamula, B., Milanović, I., Grbović-Novaković, J.,& Novaković, N.. (2014). Near-surface hydrogen dynamics in titania. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., I-07-P.
Vujasin R, Paskaš Mamula B, Milanović I, Grbović-Novaković J, Novaković N. Near-surface hydrogen dynamics in titania. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;I-07-P..
Vujasin, Radojka, Paskaš Mamula, Bojana, Milanović, Igor, Grbović-Novaković, Jasmina, Novaković, Nikola, "Near-surface hydrogen dynamics in titania" in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, I-07-P (2014).

Remarkable sorption properties of MgH2-VO2 nanocompostites

Milošević, Sanja S.; Vujasin, Radojka; Matović, Ljiljana; Rašković-Lovre, Željka; Pasquini, L.; Grbović-Novaković, Jasmina

(Society of Physical Chemists of Serbia, 2014)

TY  - CONF
AU  - Milošević, Sanja S.
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana
AU  - Rašković-Lovre, Željka
AU  - Pasquini, L.
AU  - Grbović-Novaković, Jasmina
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9238
AB  - Composite of MgH2 VO2 has been synthesized by high-energy mechanical
milling. The sorption properties of composites were examined by
differential scanning calorimetry and sorption analysis. It has been shown
that at relatively low temperature sorption reaction is notable enhanced.
Complete desorption of pure MgH2 at 380°C finishes after 30 minutes while
composite material fully desorbs in less than 2 minutes even at lower
temperatures.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Remarkable sorption properties of MgH2-VO2 nanocompostites
VL  - H-25-P
ER  - 
@conference{
author = "Milošević, Sanja S. and Vujasin, Radojka and Matović, Ljiljana and Rašković-Lovre, Željka and Pasquini, L. and Grbović-Novaković, Jasmina",
year = "2014",
abstract = "Composite of MgH2 VO2 has been synthesized by high-energy mechanical
milling. The sorption properties of composites were examined by
differential scanning calorimetry and sorption analysis. It has been shown
that at relatively low temperature sorption reaction is notable enhanced.
Complete desorption of pure MgH2 at 380°C finishes after 30 minutes while
composite material fully desorbs in less than 2 minutes even at lower
temperatures.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Remarkable sorption properties of MgH2-VO2 nanocompostites",
volume = "H-25-P"
}
Milošević, S. S., Vujasin, R., Matović, L., Rašković-Lovre, Ž., Pasquini, L.,& Grbović-Novaković, J.. (2014). Remarkable sorption properties of MgH2-VO2 nanocompostites. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., H-25-P.
Milošević SS, Vujasin R, Matović L, Rašković-Lovre Ž, Pasquini L, Grbović-Novaković J. Remarkable sorption properties of MgH2-VO2 nanocompostites. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;H-25-P..
Milošević, Sanja S., Vujasin, Radojka, Matović, Ljiljana, Rašković-Lovre, Željka, Pasquini, L., Grbović-Novaković, Jasmina, "Remarkable sorption properties of MgH2-VO2 nanocompostites" in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, H-25-P (2014).

Influence of VO2 nanostructured ceramics on hydrogen desorption properties from magnesium hydride

Milošević, Sanja S.; Rašković-Lovre, Željka; Kurko, Sandra V.; Vujasin, Radojka; Cvjetićanin, Nikola; Matović, Ljiljana; Grbović-Novaković, Jasmina

(2013)

TY  - JOUR
AU  - Milošević, Sanja S.
AU  - Rašković-Lovre, Željka
AU  - Kurko, Sandra V.
AU  - Vujasin, Radojka
AU  - Cvjetićanin, Nikola
AU  - Matović, Ljiljana
AU  - Grbović-Novaković, Jasmina
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5324
AB  - The hydrogen desorption properties and kinetics of MgH2-VO2 composite prepared by mechanical milling of MgH2 and VO2 have been investigated. Structural characterization of produced nanocomposite was done by X-ray powder diffraction (XRD), particle size analysis and scanning electron microscopy (SEM). The structure and morphology of the composite have been correlated with hydrogen desorption properties investigated by differential thermal analysis (DTA). It has been shown that short mechanical milling of nanostructured VO2 and MgH2 leads to decrease of hydrogen desorption temperature of MgH2 by 80 K. The mechanism of desorption has been changed from phase boundary reaction, spherical symmetry for untreated MgH2 to phase boundary reaction, cylindrical symmetry for the composite material. The activation energy for desorption has been reduced by adding VO2 ceramics as a catalyst. (C) 2012 Elsevier Ltd and, Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Influence of VO2 nanostructured ceramics on hydrogen desorption properties from magnesium hydride
VL  - 39
IS  - 1
SP  - 51
EP  - 56
DO  - 10.1016/j.ceramint.2012.05.091
ER  - 
@article{
author = "Milošević, Sanja S. and Rašković-Lovre, Željka and Kurko, Sandra V. and Vujasin, Radojka and Cvjetićanin, Nikola and Matović, Ljiljana and Grbović-Novaković, Jasmina",
year = "2013",
abstract = "The hydrogen desorption properties and kinetics of MgH2-VO2 composite prepared by mechanical milling of MgH2 and VO2 have been investigated. Structural characterization of produced nanocomposite was done by X-ray powder diffraction (XRD), particle size analysis and scanning electron microscopy (SEM). The structure and morphology of the composite have been correlated with hydrogen desorption properties investigated by differential thermal analysis (DTA). It has been shown that short mechanical milling of nanostructured VO2 and MgH2 leads to decrease of hydrogen desorption temperature of MgH2 by 80 K. The mechanism of desorption has been changed from phase boundary reaction, spherical symmetry for untreated MgH2 to phase boundary reaction, cylindrical symmetry for the composite material. The activation energy for desorption has been reduced by adding VO2 ceramics as a catalyst. (C) 2012 Elsevier Ltd and, Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Influence of VO2 nanostructured ceramics on hydrogen desorption properties from magnesium hydride",
volume = "39",
number = "1",
pages = "51-56",
doi = "10.1016/j.ceramint.2012.05.091"
}
Milošević, S. S., Rašković-Lovre, Ž., Kurko, S. V., Vujasin, R., Cvjetićanin, N., Matović, L.,& Grbović-Novaković, J.. (2013). Influence of VO2 nanostructured ceramics on hydrogen desorption properties from magnesium hydride. in Ceramics International, 39(1), 51-56.
https://doi.org/10.1016/j.ceramint.2012.05.091
Milošević SS, Rašković-Lovre Ž, Kurko SV, Vujasin R, Cvjetićanin N, Matović L, Grbović-Novaković J. Influence of VO2 nanostructured ceramics on hydrogen desorption properties from magnesium hydride. in Ceramics International. 2013;39(1):51-56.
doi:10.1016/j.ceramint.2012.05.091 .
Milošević, Sanja S., Rašković-Lovre, Željka, Kurko, Sandra V., Vujasin, Radojka, Cvjetićanin, Nikola, Matović, Ljiljana, Grbović-Novaković, Jasmina, "Influence of VO2 nanostructured ceramics on hydrogen desorption properties from magnesium hydride" in Ceramics International, 39, no. 1 (2013):51-56,
https://doi.org/10.1016/j.ceramint.2012.05.091 . .
23
22

Changes in Storage Properties of Hydrides Induced by Ion Irradiation

Grbović-Novaković, Jasmina; Kurko, Sandra V.; Rašković-Lovre, Željka; Milošević, Sanja S.; Milanović, Igor; Stojanović, Zoran S.; Vujasin, Radojka; Matović, Ljiljana

(2013)

TY  - JOUR
AU  - Grbović-Novaković, Jasmina
AU  - Kurko, Sandra V.
AU  - Rašković-Lovre, Željka
AU  - Milošević, Sanja S.
AU  - Milanović, Igor
AU  - Stojanović, Zoran S.
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5536
AB  - The influence of structural changes caused by irradiation with different ions, their energies and fluences on sorption properties has been investigated. The irradiation has been done using B3+ and N3+ ions at 45 keV with ion fluence of 10(16) ion/cm(2) at the FAMA ion source at Vinca Institute of Nuclear Sciences in Belgrade. Morphology and microstructure of samples were analysed using XRD and particle size analysis, while estimation of penetration depth and deposition of defects were done by SRIM calculations. Hydrogen desorption properties and kinetics were evaluated from TPD measurements and numerical non-isothermal procedure. Results suggest that there are several mechanisms of desorption depending on defect concentration, their interaction and ordering. It has been also demonstrated that the changes in near-surface area play the crucial role in hydrogen desorption kinetics. It is confirmed that there is possibility to control the thermodynamic parameters of these systems by controlling vacancies depth profile and concentration.
T2  - Materials Science - Medziagotyra
T1  - Changes in Storage Properties of Hydrides Induced by Ion Irradiation
VL  - 19
IS  - 2
SP  - 134
EP  - 139
DO  - 10.5755/j01.ms.19.2.1579
ER  - 
@article{
author = "Grbović-Novaković, Jasmina and Kurko, Sandra V. and Rašković-Lovre, Željka and Milošević, Sanja S. and Milanović, Igor and Stojanović, Zoran S. and Vujasin, Radojka and Matović, Ljiljana",
year = "2013",
abstract = "The influence of structural changes caused by irradiation with different ions, their energies and fluences on sorption properties has been investigated. The irradiation has been done using B3+ and N3+ ions at 45 keV with ion fluence of 10(16) ion/cm(2) at the FAMA ion source at Vinca Institute of Nuclear Sciences in Belgrade. Morphology and microstructure of samples were analysed using XRD and particle size analysis, while estimation of penetration depth and deposition of defects were done by SRIM calculations. Hydrogen desorption properties and kinetics were evaluated from TPD measurements and numerical non-isothermal procedure. Results suggest that there are several mechanisms of desorption depending on defect concentration, their interaction and ordering. It has been also demonstrated that the changes in near-surface area play the crucial role in hydrogen desorption kinetics. It is confirmed that there is possibility to control the thermodynamic parameters of these systems by controlling vacancies depth profile and concentration.",
journal = "Materials Science - Medziagotyra",
title = "Changes in Storage Properties of Hydrides Induced by Ion Irradiation",
volume = "19",
number = "2",
pages = "134-139",
doi = "10.5755/j01.ms.19.2.1579"
}
Grbović-Novaković, J., Kurko, S. V., Rašković-Lovre, Ž., Milošević, S. S., Milanović, I., Stojanović, Z. S., Vujasin, R.,& Matović, L.. (2013). Changes in Storage Properties of Hydrides Induced by Ion Irradiation. in Materials Science - Medziagotyra, 19(2), 134-139.
https://doi.org/10.5755/j01.ms.19.2.1579
Grbović-Novaković J, Kurko SV, Rašković-Lovre Ž, Milošević SS, Milanović I, Stojanović ZS, Vujasin R, Matović L. Changes in Storage Properties of Hydrides Induced by Ion Irradiation. in Materials Science - Medziagotyra. 2013;19(2):134-139.
doi:10.5755/j01.ms.19.2.1579 .
Grbović-Novaković, Jasmina, Kurko, Sandra V., Rašković-Lovre, Željka, Milošević, Sanja S., Milanović, Igor, Stojanović, Zoran S., Vujasin, Radojka, Matović, Ljiljana, "Changes in Storage Properties of Hydrides Induced by Ion Irradiation" in Materials Science - Medziagotyra, 19, no. 2 (2013):134-139,
https://doi.org/10.5755/j01.ms.19.2.1579 . .
1
2
2

Aging Effects in Irradiated MgH2; Connection to Hydrogen Production

Kurko, Sandra V.; Matović, Ljiljana; Vujasin, Radojka; Milanović, Igor; Rašković-Lovre, Željka; Ivanović, Nenad; Grbović-Novaković, Jasmina

(2013)

TY  - JOUR
AU  - Kurko, Sandra V.
AU  - Matović, Ljiljana
AU  - Vujasin, Radojka
AU  - Milanović, Igor
AU  - Rašković-Lovre, Željka
AU  - Ivanović, Nenad
AU  - Grbović-Novaković, Jasmina
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5711
AB  - The paper deals with the possibility to control aging of MgH2 by controlling the deposited energy, number and type of defects and their distribution in the near surface region using Ar8+, Xe8+, and B3+ ion irradiation. The evolution of the obtained phases was monitored using X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, laser scattering particle size distribution measurements and surface area analyses. Obtained results give the possibility to resolve between the material related (impurities, defects, strains) and the ambient induced component of aging.
T2  - Materials Science - Medziagotyra
T1  - Aging Effects in Irradiated MgH2; Connection to Hydrogen Production
VL  - 19
IS  - 3
SP  - 349
EP  - 353
DO  - 10.5755/j01.ms.19.3.2308
ER  - 
@article{
author = "Kurko, Sandra V. and Matović, Ljiljana and Vujasin, Radojka and Milanović, Igor and Rašković-Lovre, Željka and Ivanović, Nenad and Grbović-Novaković, Jasmina",
year = "2013",
abstract = "The paper deals with the possibility to control aging of MgH2 by controlling the deposited energy, number and type of defects and their distribution in the near surface region using Ar8+, Xe8+, and B3+ ion irradiation. The evolution of the obtained phases was monitored using X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, laser scattering particle size distribution measurements and surface area analyses. Obtained results give the possibility to resolve between the material related (impurities, defects, strains) and the ambient induced component of aging.",
journal = "Materials Science - Medziagotyra",
title = "Aging Effects in Irradiated MgH2; Connection to Hydrogen Production",
volume = "19",
number = "3",
pages = "349-353",
doi = "10.5755/j01.ms.19.3.2308"
}
Kurko, S. V., Matović, L., Vujasin, R., Milanović, I., Rašković-Lovre, Ž., Ivanović, N.,& Grbović-Novaković, J.. (2013). Aging Effects in Irradiated MgH2; Connection to Hydrogen Production. in Materials Science - Medziagotyra, 19(3), 349-353.
https://doi.org/10.5755/j01.ms.19.3.2308
Kurko SV, Matović L, Vujasin R, Milanović I, Rašković-Lovre Ž, Ivanović N, Grbović-Novaković J. Aging Effects in Irradiated MgH2; Connection to Hydrogen Production. in Materials Science - Medziagotyra. 2013;19(3):349-353.
doi:10.5755/j01.ms.19.3.2308 .
Kurko, Sandra V., Matović, Ljiljana, Vujasin, Radojka, Milanović, Igor, Rašković-Lovre, Željka, Ivanović, Nenad, Grbović-Novaković, Jasmina, "Aging Effects in Irradiated MgH2; Connection to Hydrogen Production" in Materials Science - Medziagotyra, 19, no. 3 (2013):349-353,
https://doi.org/10.5755/j01.ms.19.3.2308 . .
1
1
1

Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites

Milanović, Igor; Milošević, Sanja S.; Rašković-Lovre, Željka; Novaković, Nikola; Vujasin, Radojka; Matović, Ljiljana; Fernandez, Jose Francisco; Sanchez, Carlos; Grbović-Novaković, Jasmina

(2013)

TY  - JOUR
AU  - Milanović, Igor
AU  - Milošević, Sanja S.
AU  - Rašković-Lovre, Željka
AU  - Novaković, Nikola
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana
AU  - Fernandez, Jose Francisco
AU  - Sanchez, Carlos
AU  - Grbović-Novaković, Jasmina
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5465
AB  - The influence of TiB2 and SiC ceramics on H-desorption kinetics from MgH2 based composites was investigated and correlated with the microstructure and morphology of the composites. The mechanism of desorption and the activation energy for desorption was investigated by applying non-isothermal kinetic analysis of thermodesorption spectra. It has been shown that TiB2 addition leads to significant decrease of the activation energy for desorption, while SiC addition has effect on the interface reaction between hydride and hydroxide. The mechanism of desorption change from Avrami-Erofeev n=3 for pure MgH2 to Avrami Erofeev n=4 for composite materials. The change from 3 to 4 can be due to the modification of the nucleation process or a change in the dimensionality of the growth. Those high values of n discard a diffusion control as a rate limiting step. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites
VL  - 39
IS  - 4
SP  - 4399
EP  - 4405
DO  - 10.1016/j.ceramint.2012.11.029
ER  - 
@article{
author = "Milanović, Igor and Milošević, Sanja S. and Rašković-Lovre, Željka and Novaković, Nikola and Vujasin, Radojka and Matović, Ljiljana and Fernandez, Jose Francisco and Sanchez, Carlos and Grbović-Novaković, Jasmina",
year = "2013",
abstract = "The influence of TiB2 and SiC ceramics on H-desorption kinetics from MgH2 based composites was investigated and correlated with the microstructure and morphology of the composites. The mechanism of desorption and the activation energy for desorption was investigated by applying non-isothermal kinetic analysis of thermodesorption spectra. It has been shown that TiB2 addition leads to significant decrease of the activation energy for desorption, while SiC addition has effect on the interface reaction between hydride and hydroxide. The mechanism of desorption change from Avrami-Erofeev n=3 for pure MgH2 to Avrami Erofeev n=4 for composite materials. The change from 3 to 4 can be due to the modification of the nucleation process or a change in the dimensionality of the growth. Those high values of n discard a diffusion control as a rate limiting step. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites",
volume = "39",
number = "4",
pages = "4399-4405",
doi = "10.1016/j.ceramint.2012.11.029"
}
Milanović, I., Milošević, S. S., Rašković-Lovre, Ž., Novaković, N., Vujasin, R., Matović, L., Fernandez, J. F., Sanchez, C.,& Grbović-Novaković, J.. (2013). Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites. in Ceramics International, 39(4), 4399-4405.
https://doi.org/10.1016/j.ceramint.2012.11.029
Milanović I, Milošević SS, Rašković-Lovre Ž, Novaković N, Vujasin R, Matović L, Fernandez JF, Sanchez C, Grbović-Novaković J. Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites. in Ceramics International. 2013;39(4):4399-4405.
doi:10.1016/j.ceramint.2012.11.029 .
Milanović, Igor, Milošević, Sanja S., Rašković-Lovre, Željka, Novaković, Nikola, Vujasin, Radojka, Matović, Ljiljana, Fernandez, Jose Francisco, Sanchez, Carlos, Grbović-Novaković, Jasmina, "Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites" in Ceramics International, 39, no. 4 (2013):4399-4405,
https://doi.org/10.1016/j.ceramint.2012.11.029 . .
18
18
18

Hydrogen desorption properties of MgH2/LiAlH4 composites

Milanović, Igor; Milošević, Sanja S.; Matović, Ljiljana; Vujasin, Radojka; Nauakovic, Nikola; Checchetto, Riccardo; Grbović-Novaković, Jasmina

(2013)

TY  - JOUR
AU  - Milanović, Igor
AU  - Milošević, Sanja S.
AU  - Matović, Ljiljana
AU  - Vujasin, Radojka
AU  - Nauakovic, Nikola
AU  - Checchetto, Riccardo
AU  - Grbović-Novaković, Jasmina
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5690
AB  - The hydrogen desorption properties of MgH2-LiAlH4 composites obtained by mechanical milling for different milling times have been investigated by Thermal Desorption Spectroscopy (TDS) and correlated to the sample microstructure and morphology analysed by X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The MgH2-LiAlH4 composites show improved hydrogen desorption properties in comparison with both as-received and ball-milled MgH2. Mixing of MgH2 with small amount of LiAlH4 (5 wt.%) using short mechanical milling (15 min) shifts, in fact, the hydrogen desorption peak to lower temperature than those observed with both as-received and milled MgH2 samples. Longer mixing times of the MgH2-LiAlH4 composites (30 and 60 mm) reduce the catalytic activity of the LiAlH4 additive as revealed by the shift of the hydrogen desorption peak to higher temperatures. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Hydrogen desorption properties of MgH2/LiAlH4 composites
VL  - 38
IS  - 27
SP  - 12152
EP  - 12158
DO  - 10.1016/j.ijhydene.2013.05.020
ER  - 
@article{
author = "Milanović, Igor and Milošević, Sanja S. and Matović, Ljiljana and Vujasin, Radojka and Nauakovic, Nikola and Checchetto, Riccardo and Grbović-Novaković, Jasmina",
year = "2013",
abstract = "The hydrogen desorption properties of MgH2-LiAlH4 composites obtained by mechanical milling for different milling times have been investigated by Thermal Desorption Spectroscopy (TDS) and correlated to the sample microstructure and morphology analysed by X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The MgH2-LiAlH4 composites show improved hydrogen desorption properties in comparison with both as-received and ball-milled MgH2. Mixing of MgH2 with small amount of LiAlH4 (5 wt.%) using short mechanical milling (15 min) shifts, in fact, the hydrogen desorption peak to lower temperature than those observed with both as-received and milled MgH2 samples. Longer mixing times of the MgH2-LiAlH4 composites (30 and 60 mm) reduce the catalytic activity of the LiAlH4 additive as revealed by the shift of the hydrogen desorption peak to higher temperatures. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Hydrogen desorption properties of MgH2/LiAlH4 composites",
volume = "38",
number = "27",
pages = "12152-12158",
doi = "10.1016/j.ijhydene.2013.05.020"
}
Milanović, I., Milošević, S. S., Matović, L., Vujasin, R., Nauakovic, N., Checchetto, R.,& Grbović-Novaković, J.. (2013). Hydrogen desorption properties of MgH2/LiAlH4 composites. in International Journal of Hydrogen Energy, 38(27), 12152-12158.
https://doi.org/10.1016/j.ijhydene.2013.05.020
Milanović I, Milošević SS, Matović L, Vujasin R, Nauakovic N, Checchetto R, Grbović-Novaković J. Hydrogen desorption properties of MgH2/LiAlH4 composites. in International Journal of Hydrogen Energy. 2013;38(27):12152-12158.
doi:10.1016/j.ijhydene.2013.05.020 .
Milanović, Igor, Milošević, Sanja S., Matović, Ljiljana, Vujasin, Radojka, Nauakovic, Nikola, Checchetto, Riccardo, Grbović-Novaković, Jasmina, "Hydrogen desorption properties of MgH2/LiAlH4 composites" in International Journal of Hydrogen Energy, 38, no. 27 (2013):12152-12158,
https://doi.org/10.1016/j.ijhydene.2013.05.020 . .
14
12
17

Surface characterisation of mechanochemicaly activated carbon cloth

Đukić, Anđelka B.; Grbović-Novaković, Jasmina; Stojanović, Zoran S.; Milanović, Igor; Vujasin, Radojka; Milošević, Sanja S.; Matović, Ljiljana

(Belgrade : Materials Research Society of Serbia, 2013)

TY  - CONF
AU  - Đukić, Anđelka B.
AU  - Grbović-Novaković, Jasmina
AU  - Stojanović, Zoran S.
AU  - Milanović, Igor
AU  - Vujasin, Radojka
AU  - Milošević, Sanja S.
AU  - Matović, Ljiljana
PY  - 2013
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/651
UR  - http://dais.sanu.ac.rs/123456789/390
UR  - http://www.itn.sanu.ac.rs/opus4/files/651/Djukic_YUCOMAT2013_126.pdf
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7414
AB  - Adsorption on activated carbon cloth is an efficient procedure for removing pollutants from wastewaters, because this material possesses large specific area and high adsorption capacity. Inthis study the activated carbon cloth was modified by mechanical milling in order to improve its sorption properties. The microstructure and morphology of the sample was investigated by XRD,PSD and SEM and surface chemistry was characterized by potentiometric titrations. The result showed that microstructure and morphology was drastically changed with milling: particle sizesreduction, agglomeration and the loss of fibrous structure occurred. These changes resulted in increase of the acidic and the base groups: the number of basic groups was increased by the factor of 11 while the number of acidic groups by the factor of 1.5.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - Surface characterisation of mechanochemicaly activated carbon cloth
SP  - 126
EP  - 126
ER  - 
@conference{
author = "Đukić, Anđelka B. and Grbović-Novaković, Jasmina and Stojanović, Zoran S. and Milanović, Igor and Vujasin, Radojka and Milošević, Sanja S. and Matović, Ljiljana",
year = "2013",
abstract = "Adsorption on activated carbon cloth is an efficient procedure for removing pollutants from wastewaters, because this material possesses large specific area and high adsorption capacity. Inthis study the activated carbon cloth was modified by mechanical milling in order to improve its sorption properties. The microstructure and morphology of the sample was investigated by XRD,PSD and SEM and surface chemistry was characterized by potentiometric titrations. The result showed that microstructure and morphology was drastically changed with milling: particle sizesreduction, agglomeration and the loss of fibrous structure occurred. These changes resulted in increase of the acidic and the base groups: the number of basic groups was increased by the factor of 11 while the number of acidic groups by the factor of 1.5.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "Surface characterisation of mechanochemicaly activated carbon cloth",
pages = "126-126"
}
Đukić, A. B., Grbović-Novaković, J., Stojanović, Z. S., Milanović, I., Vujasin, R., Milošević, S. S.,& Matović, L.. (2013). Surface characterisation of mechanochemicaly activated carbon cloth. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 126-126.
Đukić AB, Grbović-Novaković J, Stojanović ZS, Milanović I, Vujasin R, Milošević SS, Matović L. Surface characterisation of mechanochemicaly activated carbon cloth. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts. 2013;:126-126..
Đukić, Anđelka B., Grbović-Novaković, Jasmina, Stojanović, Zoran S., Milanović, Igor, Vujasin, Radojka, Milošević, Sanja S., Matović, Ljiljana, "Surface characterisation of mechanochemicaly activated carbon cloth" in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts (2013):126-126.

Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties

Gulicovski, Jelena J.; Rašković-Lovre, Željka; Kurko, Sandra V.; Vujasin, Radojka; Jovanović, Zoran M.; Matović, Ljiljana; Grbović-Novaković, Jasmina

(2012)

TY  - JOUR
AU  - Gulicovski, Jelena J.
AU  - Rašković-Lovre, Željka
AU  - Kurko, Sandra V.
AU  - Vujasin, Radojka
AU  - Jovanović, Zoran M.
AU  - Matović, Ljiljana
AU  - Grbović-Novaković, Jasmina
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4699
AB  - The hydrogen desorption (HD) properties of MgH2-CeO2 composite prepared by mechanically milling of MgH2 and cubic CeO2nano have been examined. Morphology and microstructure of composites have been studied by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), laser scattering analysis and correlated with desorption properties obtained by means of temperature programmed desorption (TPD). It has been shown that decrease of crystallite and particle size of the samples lead to significant lowering of desorption temperature. Further, the activation energy for desorption (E-A(des)) has been calculated using Kissinger equation. Obtained value of 60 +/- 10 kJ/mol indicates that the activation energy of hydrogen desorption is sufficiently decreased by the catalytic effect of vacant CeO2 structure. Consequently the surface activation of sample plays a major role in HD reaction. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties
VL  - 38
IS  - 2
SP  - 1181
EP  - 1186
DO  - 10.1016/j.ceramint.2011.08.047
ER  - 
@article{
author = "Gulicovski, Jelena J. and Rašković-Lovre, Željka and Kurko, Sandra V. and Vujasin, Radojka and Jovanović, Zoran M. and Matović, Ljiljana and Grbović-Novaković, Jasmina",
year = "2012",
abstract = "The hydrogen desorption (HD) properties of MgH2-CeO2 composite prepared by mechanically milling of MgH2 and cubic CeO2nano have been examined. Morphology and microstructure of composites have been studied by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), laser scattering analysis and correlated with desorption properties obtained by means of temperature programmed desorption (TPD). It has been shown that decrease of crystallite and particle size of the samples lead to significant lowering of desorption temperature. Further, the activation energy for desorption (E-A(des)) has been calculated using Kissinger equation. Obtained value of 60 +/- 10 kJ/mol indicates that the activation energy of hydrogen desorption is sufficiently decreased by the catalytic effect of vacant CeO2 structure. Consequently the surface activation of sample plays a major role in HD reaction. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties",
volume = "38",
number = "2",
pages = "1181-1186",
doi = "10.1016/j.ceramint.2011.08.047"
}
Gulicovski, J. J., Rašković-Lovre, Ž., Kurko, S. V., Vujasin, R., Jovanović, Z. M., Matović, L.,& Grbović-Novaković, J.. (2012). Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties. in Ceramics International, 38(2), 1181-1186.
https://doi.org/10.1016/j.ceramint.2011.08.047
Gulicovski JJ, Rašković-Lovre Ž, Kurko SV, Vujasin R, Jovanović ZM, Matović L, Grbović-Novaković J. Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties. in Ceramics International. 2012;38(2):1181-1186.
doi:10.1016/j.ceramint.2011.08.047 .
Gulicovski, Jelena J., Rašković-Lovre, Željka, Kurko, Sandra V., Vujasin, Radojka, Jovanović, Zoran M., Matović, Ljiljana, Grbović-Novaković, Jasmina, "Influence of vacant CeO2 nanostructured ceramics on MgH2 hydrogen desorption properties" in Ceramics International, 38, no. 2 (2012):1181-1186,
https://doi.org/10.1016/j.ceramint.2011.08.047 . .
33
37

Assessment of changes in desorption mechanism of MgH2 after ion bombardment induced destabilization

Matović, Ljiljana; Kurko, Sandra V.; Rašković-Lovre, Željka; Vujasin, Radojka; Milanović, Igor; Milošević, Sanja S.; Grbović-Novaković, Jasmina

(2012)

TY  - JOUR
AU  - Matović, Ljiljana
AU  - Kurko, Sandra V.
AU  - Rašković-Lovre, Željka
AU  - Vujasin, Radojka
AU  - Milanović, Igor
AU  - Milošević, Sanja S.
AU  - Grbović-Novaković, Jasmina
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4842
AB  - This paper deals with non-isothermal kinetics models of hydrogen desorption from MgH2 altered by ion bombardment and stresses the importance of the MgH2 surface during its decomposition. In the case of argon-irradiated samples, where defects are induced in the near-surface region, the Avrami Erofeev mechanism with parameter n = 2 can be adopted while in the case of boron-irradiated samples, where defects are created deeper in the bulk, the desorption mechanism is the same with n = 3. The difference is possibly related to the concentration and good dispersion of defects in near-surface region in the samples. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Assessment of changes in desorption mechanism of MgH2 after ion bombardment induced destabilization
VL  - 37
IS  - 8
SP  - 6727
EP  - 6732
DO  - 10.1016/j.ijhydene.2012.01.084
ER  - 
@article{
author = "Matović, Ljiljana and Kurko, Sandra V. and Rašković-Lovre, Željka and Vujasin, Radojka and Milanović, Igor and Milošević, Sanja S. and Grbović-Novaković, Jasmina",
year = "2012",
abstract = "This paper deals with non-isothermal kinetics models of hydrogen desorption from MgH2 altered by ion bombardment and stresses the importance of the MgH2 surface during its decomposition. In the case of argon-irradiated samples, where defects are induced in the near-surface region, the Avrami Erofeev mechanism with parameter n = 2 can be adopted while in the case of boron-irradiated samples, where defects are created deeper in the bulk, the desorption mechanism is the same with n = 3. The difference is possibly related to the concentration and good dispersion of defects in near-surface region in the samples. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Assessment of changes in desorption mechanism of MgH2 after ion bombardment induced destabilization",
volume = "37",
number = "8",
pages = "6727-6732",
doi = "10.1016/j.ijhydene.2012.01.084"
}
Matović, L., Kurko, S. V., Rašković-Lovre, Ž., Vujasin, R., Milanović, I., Milošević, S. S.,& Grbović-Novaković, J.. (2012). Assessment of changes in desorption mechanism of MgH2 after ion bombardment induced destabilization. in International Journal of Hydrogen Energy, 37(8), 6727-6732.
https://doi.org/10.1016/j.ijhydene.2012.01.084
Matović L, Kurko SV, Rašković-Lovre Ž, Vujasin R, Milanović I, Milošević SS, Grbović-Novaković J. Assessment of changes in desorption mechanism of MgH2 after ion bombardment induced destabilization. in International Journal of Hydrogen Energy. 2012;37(8):6727-6732.
doi:10.1016/j.ijhydene.2012.01.084 .
Matović, Ljiljana, Kurko, Sandra V., Rašković-Lovre, Željka, Vujasin, Radojka, Milanović, Igor, Milošević, Sanja S., Grbović-Novaković, Jasmina, "Assessment of changes in desorption mechanism of MgH2 after ion bombardment induced destabilization" in International Journal of Hydrogen Energy, 37, no. 8 (2012):6727-6732,
https://doi.org/10.1016/j.ijhydene.2012.01.084 . .
1
14
12
15

Changes in Storage Properties of Hydrides Induced By Ion Irradiation

Grbović-Novaković, Jasmina; Kurko, Sandra V.; Rašković-Lovre, Željka; Milošević, Sanja S.; Milovanović, I.; Vujasin, Radojka; Matović, Ljiljana

(2012)

TY  - CONF
AU  - Grbović-Novaković, Jasmina
AU  - Kurko, Sandra V.
AU  - Rašković-Lovre, Željka
AU  - Milošević, Sanja S.
AU  - Milovanović, I.
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6976
AB  - The influence of structural changes caused by irradiation with different ions, their energies and fluences on sorption properties has been investigated. Results suggest that there are several mechanisms of desorption depending on defect concentration, their interaction and ordering. It has been also demonstrated that the changes in near-surface area play the crucial role in hydrogen desorption kinetics. It is confirmed that there is a possibility to control the thermodynamic parameters by controlling vacancies concentration in the systems.
T1  - Changes in Storage Properties of Hydrides Induced By Ion Irradiation
SP  - 28
EP  - 31
ER  - 
@conference{
author = "Grbović-Novaković, Jasmina and Kurko, Sandra V. and Rašković-Lovre, Željka and Milošević, Sanja S. and Milovanović, I. and Vujasin, Radojka and Matović, Ljiljana",
year = "2012",
abstract = "The influence of structural changes caused by irradiation with different ions, their energies and fluences on sorption properties has been investigated. Results suggest that there are several mechanisms of desorption depending on defect concentration, their interaction and ordering. It has been also demonstrated that the changes in near-surface area play the crucial role in hydrogen desorption kinetics. It is confirmed that there is a possibility to control the thermodynamic parameters by controlling vacancies concentration in the systems.",
title = "Changes in Storage Properties of Hydrides Induced By Ion Irradiation",
pages = "28-31"
}
Grbović-Novaković, J., Kurko, S. V., Rašković-Lovre, Ž., Milošević, S. S., Milovanović, I., Vujasin, R.,& Matović, L.. (2012). Changes in Storage Properties of Hydrides Induced By Ion Irradiation. , 28-31.
Grbović-Novaković J, Kurko SV, Rašković-Lovre Ž, Milošević SS, Milovanović I, Vujasin R, Matović L. Changes in Storage Properties of Hydrides Induced By Ion Irradiation. 2012;:28-31..
Grbović-Novaković, Jasmina, Kurko, Sandra V., Rašković-Lovre, Željka, Milošević, Sanja S., Milovanović, I., Vujasin, Radojka, Matović, Ljiljana, "Changes in Storage Properties of Hydrides Induced By Ion Irradiation" (2012):28-31.