Solvothermaly synthesized copper doped bismuth vanadate
Апстракт
Photoeletrochemical (PEC) water splitting is a promising method for clean energy production and different oxide materials have been explored to find the right solution. Among them, as one of the most promising photoanode materials, bismuth vanadate (BiVO4) has attracted a lot of attention due to the suitable band gap edge alignment, lowcost synthesis method and great visible light harvesting features. Nowdays, research related to the BiVO4 is mostly oriented towards repairing poor charge transfer properties which exist due to the high rate of electron–hole recombination. Metal doping is one of the strategies to improve these intrinsic drawbacks. Herein, we report physicochemical properties of solvothermaly sinthesized pristine BiVO4, 1%-, 2.5%- and 5%- Cu-doped BiVO4 powders at 180 ºC for 8 h. X-ray diffraction (XRD) study indicates that, depending on the degree of doping, material exists in monoclinic or tetragonal scheelite phase. Pure monoclinic phase was formed in a case of pristin...e, 1%- and 2.5%- Cu doped samples. After doping with 5 %, phase transition occurred and material showed tetragonal phase. Scanning electron microscopy (SEM) reveals that samples with monoclinic phase consists of worm-like and prismatic structures while tetragonal samples exhibited spherical shape. Furthermore, structure was examined with Raman and FTIR spectroscopy. The results were in accordance with diffraction study where band positions were well matched with phase composition. Optical properties were characterized with UV–Vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy. Monoclinic samples showed band gap around 2.4 eV, while sample with tetragonal phase has band gap around 2.8 eV. PL showed that that monoclinic samples possess better recombination features than tetragonal ones. Photoelectrochemical measurements suggest that material is sensitive towards visible light and, after doping, improved its performance towards oxygen evolution reaction.
Извор:
8th Conference of Young Chemists of Serbia : Book of abstracts, 2022, 124-124Издавач:
- Serbian Chemical Society and Serbian Young Chemists’ Club
Напомена:
- 8th Conference of Young Chemists of Serbia; 29th October, Belgrade, Serbia
Колекције
Институција/група
VinčaTY - CONF AU - Jelić, Marko AU - Mravik, Željko AU - Jovanović, Zoran AU - Jovanović, Sonja PY - 2022 UR - https://vinar.vin.bg.ac.rs/handle/123456789/12429 AB - Photoeletrochemical (PEC) water splitting is a promising method for clean energy production and different oxide materials have been explored to find the right solution. Among them, as one of the most promising photoanode materials, bismuth vanadate (BiVO4) has attracted a lot of attention due to the suitable band gap edge alignment, lowcost synthesis method and great visible light harvesting features. Nowdays, research related to the BiVO4 is mostly oriented towards repairing poor charge transfer properties which exist due to the high rate of electron–hole recombination. Metal doping is one of the strategies to improve these intrinsic drawbacks. Herein, we report physicochemical properties of solvothermaly sinthesized pristine BiVO4, 1%-, 2.5%- and 5%- Cu-doped BiVO4 powders at 180 ºC for 8 h. X-ray diffraction (XRD) study indicates that, depending on the degree of doping, material exists in monoclinic or tetragonal scheelite phase. Pure monoclinic phase was formed in a case of pristine, 1%- and 2.5%- Cu doped samples. After doping with 5 %, phase transition occurred and material showed tetragonal phase. Scanning electron microscopy (SEM) reveals that samples with monoclinic phase consists of worm-like and prismatic structures while tetragonal samples exhibited spherical shape. Furthermore, structure was examined with Raman and FTIR spectroscopy. The results were in accordance with diffraction study where band positions were well matched with phase composition. Optical properties were characterized with UV–Vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy. Monoclinic samples showed band gap around 2.4 eV, while sample with tetragonal phase has band gap around 2.8 eV. PL showed that that monoclinic samples possess better recombination features than tetragonal ones. Photoelectrochemical measurements suggest that material is sensitive towards visible light and, after doping, improved its performance towards oxygen evolution reaction. PB - Serbian Chemical Society and Serbian Young Chemists’ Club C3 - 8th Conference of Young Chemists of Serbia : Book of abstracts T1 - Solvothermaly synthesized copper doped bismuth vanadate SP - 124 EP - 124 UR - https://hdl.handle.net/21.15107/rcub_vinar_12429 ER -
@conference{ author = "Jelić, Marko and Mravik, Željko and Jovanović, Zoran and Jovanović, Sonja", year = "2022", abstract = "Photoeletrochemical (PEC) water splitting is a promising method for clean energy production and different oxide materials have been explored to find the right solution. Among them, as one of the most promising photoanode materials, bismuth vanadate (BiVO4) has attracted a lot of attention due to the suitable band gap edge alignment, lowcost synthesis method and great visible light harvesting features. Nowdays, research related to the BiVO4 is mostly oriented towards repairing poor charge transfer properties which exist due to the high rate of electron–hole recombination. Metal doping is one of the strategies to improve these intrinsic drawbacks. Herein, we report physicochemical properties of solvothermaly sinthesized pristine BiVO4, 1%-, 2.5%- and 5%- Cu-doped BiVO4 powders at 180 ºC for 8 h. X-ray diffraction (XRD) study indicates that, depending on the degree of doping, material exists in monoclinic or tetragonal scheelite phase. Pure monoclinic phase was formed in a case of pristine, 1%- and 2.5%- Cu doped samples. After doping with 5 %, phase transition occurred and material showed tetragonal phase. Scanning electron microscopy (SEM) reveals that samples with monoclinic phase consists of worm-like and prismatic structures while tetragonal samples exhibited spherical shape. Furthermore, structure was examined with Raman and FTIR spectroscopy. The results were in accordance with diffraction study where band positions were well matched with phase composition. Optical properties were characterized with UV–Vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy. Monoclinic samples showed band gap around 2.4 eV, while sample with tetragonal phase has band gap around 2.8 eV. PL showed that that monoclinic samples possess better recombination features than tetragonal ones. Photoelectrochemical measurements suggest that material is sensitive towards visible light and, after doping, improved its performance towards oxygen evolution reaction.", publisher = "Serbian Chemical Society and Serbian Young Chemists’ Club", journal = "8th Conference of Young Chemists of Serbia : Book of abstracts", title = "Solvothermaly synthesized copper doped bismuth vanadate", pages = "124-124", url = "https://hdl.handle.net/21.15107/rcub_vinar_12429" }
Jelić, M., Mravik, Ž., Jovanović, Z.,& Jovanović, S.. (2022). Solvothermaly synthesized copper doped bismuth vanadate. in 8th Conference of Young Chemists of Serbia : Book of abstracts Serbian Chemical Society and Serbian Young Chemists’ Club., 124-124. https://hdl.handle.net/21.15107/rcub_vinar_12429
Jelić M, Mravik Ž, Jovanović Z, Jovanović S. Solvothermaly synthesized copper doped bismuth vanadate. in 8th Conference of Young Chemists of Serbia : Book of abstracts. 2022;:124-124. https://hdl.handle.net/21.15107/rcub_vinar_12429 .
Jelić, Marko, Mravik, Željko, Jovanović, Zoran, Jovanović, Sonja, "Solvothermaly synthesized copper doped bismuth vanadate" in 8th Conference of Young Chemists of Serbia : Book of abstracts (2022):124-124, https://hdl.handle.net/21.15107/rcub_vinar_12429 .