A novel photoanode based on Thorium oxide (ThO<inf>2</inf>) incorporated with graphitic Carbon nitride (g-C<inf>3</inf>N<inf>4</inf>) for Photoelectrochemical water splitting

Mohamed, NA; Ismail, AF; Safaei, J; Johan, MR; Mat Teridi, MA

A novel photoanode based on Thorium oxide (ThO<inf>2</inf>) incorporated with graphitic Carbon nitride (g-C<inf>3</inf>N<inf>4</inf>) for Photoelectrochemical water splitting

Mohamed, NA Ismail, AF Safaei, J

Johan, MR Mat Teridi, MA

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Applied Surface Science, 2021, 569, pp. 151043
Issue Date:: 2021-12-15

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Field	Value	Language
dc.contributor.author	Mohamed, NA
dc.contributor.author	Ismail, AF
dc.contributor.author	Safaei, J https://orcid.org/0000-0003-3397-5026
dc.contributor.author	Johan, MR
dc.contributor.author	Mat Teridi, MA
dc.date.accessioned	2022-04-28T20:26:46Z
dc.date.available	2022-04-28T20:26:46Z
dc.date.issued	2021-12-15
dc.identifier.citation	Applied Surface Science, 2021, 569, pp. 151043
dc.identifier.issn	0169-4332
dc.identifier.uri	http://hdl.handle.net/10453/156764
dc.description.abstract	In this study, a new insight into the doping engineering with nuclear fuel (ThO2) was performed and applied in photoelectrochemical (PEC) water splitting. The successfully synthesized g-C3N4/ThO2 (~5.8%) via thermal treatment and g-C3N4 polymerization (precursor: Urea, 30 min; 520 ˚C) manifested a remarkable and superior photocatalytic activity. The photocurrent density achieved for g-C3N4/ThO2 was 9.71 μcm−2 at 1.23 V vs. Ag/AgCl under simulated light (100 mW/cm2) that is more than twice compared with the un-doped g-C3N4 (~4.23 μA cm−2). The introduction of Thorium Nitrate during g-C3N4 polymerization altered the chemical bonding, structure, and morphology, with the improved PEC stability of the photoanode. Besides, doping with ThO2 increased the intensity of triazine and C-N bond in the g-C3N4 network, as observed by FT-IR analysis. The unique “hollow cylindrical” architecture also increased the surface area, light absorption, as well as the catalytic sites. The enhanced separation of photo-generated electron–hole pairs reduced the carrier recombination that was obviously probed via Photoluminescence spectra. Therefore, due to the photostability and the good performance, the g-C3N4/ThO2 composite can be envisioned as a potential candidate in the field of photocatalysis and prospectively be applied in PEC solar water splitting.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Applied Surface Science
dc.relation.isbasedon	10.1016/j.apsusc.2021.151043
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Applied Physics
dc.title	A novel photoanode based on Thorium oxide (ThO<inf>2</inf>) incorporated with graphitic Carbon nitride (g-C<inf>3</inf>N<inf>4</inf>) for Photoelectrochemical water splitting
dc.type	Journal Article
utslib.citation.volume	569
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	closed_access	*
dc.date.updated	2022-04-28T20:26:39Z
pubs.publication-status	Published
pubs.volume	569

Abstract:

In this study, a new insight into the doping engineering with nuclear fuel (ThO2) was performed and applied in photoelectrochemical (PEC) water splitting. The successfully synthesized g-C3N4/ThO2 (~5.8%) via thermal treatment and g-C3N4 polymerization (precursor: Urea, 30 min; 520 ˚C) manifested a remarkable and superior photocatalytic activity. The photocurrent density achieved for g-C3N4/ThO2 was 9.71 μcm−2 at 1.23 V vs. Ag/AgCl under simulated light (100 mW/cm2) that is more than twice compared with the un-doped g-C3N4 (~4.23 μA cm−2). The introduction of Thorium Nitrate during g-C3N4 polymerization altered the chemical bonding, structure, and morphology, with the improved PEC stability of the photoanode. Besides, doping with ThO2 increased the intensity of triazine and C-N bond in the g-C3N4 network, as observed by FT-IR analysis. The unique “hollow cylindrical” architecture also increased the surface area, light absorption, as well as the catalytic sites. The enhanced separation of photo-generated electron–hole pairs reduced the carrier recombination that was obviously probed via Photoluminescence spectra. Therefore, due to the photostability and the good performance, the g-C3N4/ThO2 composite can be envisioned as a potential candidate in the field of photocatalysis and prospectively be applied in PEC solar water splitting.

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http://hdl.handle.net/10453/156764