Fabrication of AgI/Ce-2MI Z-scheme heterojunction for enhanced photoreduction of Cr(VI) under visible light irradiation

Fu, Y; Mao, Y; Wang, L; Qiu, M; Xu, Y; Qian, J; Tan, M; Zhang, K; Hao, D; Wang, Q; Yang, G

Fabrication of AgI/Ce-2MI Z-scheme heterojunction for enhanced photoreduction of Cr(VI) under visible light irradiation

Fu, Y Mao, Y Wang, L Qiu, M Xu, Y Qian, J Tan, M Zhang, K Hao, D Wang, Q Yang, G

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Journal of Alloys and Compounds, 2023, 967, pp. 171662
Issue Date:: 2023-12-10

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Field	Value	Language
dc.contributor.author	Fu, Y
dc.contributor.author	Mao, Y
dc.contributor.author	Wang, L
dc.contributor.author	Qiu, M
dc.contributor.author	Xu, Y
dc.contributor.author	Qian, J
dc.contributor.author	Tan, M
dc.contributor.author	Zhang, K
dc.contributor.author	Hao, D
dc.contributor.author	Wang, Q
dc.contributor.author	Yang, G
dc.date.accessioned	2024-04-27T20:16:32Z
dc.date.available	2024-04-27T20:16:32Z
dc.date.issued	2023-12-10
dc.identifier.citation	Journal of Alloys and Compounds, 2023, 967, pp. 171662
dc.identifier.issn	0925-8388
dc.identifier.uri	http://hdl.handle.net/10453/178413
dc.description.abstract	Proper design and successful synthesis of photocatalysts with efficient interfacial charge transfer, strong redox capabilities, and strong environmental applications are critical. Herein, a novel Z-scheme heterojunction AgI/Ce-2MI nanocomposite with redox-retaining properties was successfully prepared by a simple precipitation method. Compared with AgI and Ce-2MI, the efficiency of the optimized Z-scheme AgI/Ce-2MI composites in photocatalytic reduction of Cr(VI) in water within 75 min could exceed 90%. The reduction rate of AgI/Ce-2MI to Cr(VI) was 0.0277 min−1, which was 2.6 times and 6.8 times that of AgI and Ce-2MI, respectively. In addition, the cycle performance of AgI/Ce-2MI under different pH conditions was compared, and it was found that under the condition of pH= 2, its five-time catalytic activity stability showed good performance. Moreover, the enhancement process of reactive oxygen species •O2- and •OH were further verified by active radical capture experiment and ESR. Therefore, this study can provide a Z-scheme heterojunction nanocomposite photocatalytic process with environmental purification functions.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Journal of Alloys and Compounds
dc.relation.isbasedon	10.1016/j.jallcom.2023.171662
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0204 Condensed Matter Physics, 0912 Materials Engineering, 0914 Resources Engineering and Extractive Metallurgy
dc.subject.classification	Materials
dc.subject.classification	4016 Materials engineering
dc.subject.classification	5104 Condensed matter physics
dc.title	Fabrication of AgI/Ce-2MI Z-scheme heterojunction for enhanced photoreduction of Cr(VI) under visible light irradiation
dc.type	Journal Article
utslib.citation.volume	967
utslib.for	0204 Condensed Matter Physics
utslib.for	0912 Materials Engineering
utslib.for	0914 Resources Engineering and Extractive Metallurgy
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2024-04-27T20:16:26Z
pubs.publication-status	Published
pubs.volume	967

Abstract:

Proper design and successful synthesis of photocatalysts with efficient interfacial charge transfer, strong redox capabilities, and strong environmental applications are critical. Herein, a novel Z-scheme heterojunction AgI/Ce-2MI nanocomposite with redox-retaining properties was successfully prepared by a simple precipitation method. Compared with AgI and Ce-2MI, the efficiency of the optimized Z-scheme AgI/Ce-2MI composites in photocatalytic reduction of Cr(VI) in water within 75 min could exceed 90%. The reduction rate of AgI/Ce-2MI to Cr(VI) was 0.0277 min−1, which was 2.6 times and 6.8 times that of AgI and Ce-2MI, respectively. In addition, the cycle performance of AgI/Ce-2MI under different pH conditions was compared, and it was found that under the condition of pH= 2, its five-time catalytic activity stability showed good performance. Moreover, the enhancement process of reactive oxygen species •O2- and •OH were further verified by active radical capture experiment and ESR. Therefore, this study can provide a Z-scheme heterojunction nanocomposite photocatalytic process with environmental purification functions.

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http://hdl.handle.net/10453/178413