Highly efficient Ag2O/Na-g-C3N4 heterojunction for photocatalytic desulfurization of thiophene in fuel under ambient air conditions

Zhou, X; Wang, T; Zhang, L; Che, S; Liu, H; Liu, S; Wang, C; Su, D; Teng, Z

Highly efficient Ag2O/Na-g-C3N4 heterojunction for photocatalytic desulfurization of thiophene in fuel under ambient air conditions

Zhou, X Wang, T Zhang, L Che, S Liu, H Liu, S Wang, C Su, D

Teng, Z

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Applied Catalysis B: Environmental, 2022, 316
Issue Date:: 2022-11-05

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Field	Value	Language
dc.contributor.author	Zhou, X
dc.contributor.author	Wang, T
dc.contributor.author	Zhang, L
dc.contributor.author	Che, S
dc.contributor.author	Liu, H
dc.contributor.author	Liu, S
dc.contributor.author	Wang, C
dc.contributor.author	Su, D https://orcid.org/0000-0002-3972-8205
dc.contributor.author	Teng, Z
dc.date.accessioned	2023-02-20T01:15:08Z
dc.date.available	2023-02-20T01:15:08Z
dc.date.issued	2022-11-05
dc.identifier.citation	Applied Catalysis B: Environmental, 2022, 316
dc.identifier.issn	0926-3373
dc.identifier.issn	1873-3883
dc.identifier.uri	http://hdl.handle.net/10453/166259
dc.description.abstract	A composite photocatalyst of Ag2O and Na doped g-C3N4 (Ag2O/Na-CN) with high efficiency was investigated for photocatalytic oxidative desulfurization (PODS). The concentration and lifetime of carriers are increased with Na-CN. Under light conditions, it produces more charge carriers for the generation of radical species, such as superoxide radicals and holes. In addition, Na-CN and Ag2O form a p-n heterojunction, facilitating the transfer and separation of photogenerated electrons and holes, and increasing the concentration of holes on the valence band of Ag2O. The significantly improved charge separation alone with the higher carrier concentration of Ag2O/Na-CN makes the activation and oxidation of thiophene easier. Free radical capture experiments, electron paramagnetic resonance, and gas chromatography-mass spectrometry tests showed that holes, electrons, and superoxide radicals are the most critical active species in the PODS process, supporting the proposed PODS mechanism.
dc.language	English
dc.publisher	ELSEVIER
dc.relation	National Natural Science Foundation of China21978251
dc.relation.ispartof	Applied Catalysis B: Environmental
dc.relation.isbasedon	10.1016/j.apcatb.2022.121614
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0306 Physical Chemistry (incl. Structural), 0904 Chemical Engineering, 0907 Environmental Engineering
dc.subject.classification	Physical Chemistry
dc.title	Highly efficient Ag2O/Na-g-C3N4 heterojunction for photocatalytic desulfurization of thiophene in fuel under ambient air conditions
dc.type	Journal Article
utslib.citation.volume	316
utslib.for	0306 Physical Chemistry (incl. Structural)
utslib.for	0904 Chemical Engineering
utslib.for	0907 Environmental Engineering
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
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	closed_access	*
dc.date.updated	2023-02-20T01:15:05Z
pubs.publication-status	Published
pubs.volume	316

Abstract:

A composite photocatalyst of Ag2O and Na doped g-C3N4 (Ag2O/Na-CN) with high efficiency was investigated for photocatalytic oxidative desulfurization (PODS). The concentration and lifetime of carriers are increased with Na-CN. Under light conditions, it produces more charge carriers for the generation of radical species, such as superoxide radicals and holes. In addition, Na-CN and Ag2O form a p-n heterojunction, facilitating the transfer and separation of photogenerated electrons and holes, and increasing the concentration of holes on the valence band of Ag2O. The significantly improved charge separation alone with the higher carrier concentration of Ag2O/Na-CN makes the activation and oxidation of thiophene easier. Free radical capture experiments, electron paramagnetic resonance, and gas chromatography-mass spectrometry tests showed that holes, electrons, and superoxide radicals are the most critical active species in the PODS process, supporting the proposed PODS mechanism.

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http://hdl.handle.net/10453/166259