Enhanced photocatalytic performance and stability of visible-light-driven Z-scheme CdS/Ag/g-C3N4 nanosheets photocatalyst

Yingying Qin; Hong Li; Hongjun Dong; Changchang Ma; Xiuying Li; Xinlin Liu; Yang Liu; Chunxiang Li; Yongsheng Yan

doi:10.1039/c8nj02057d

Enhanced photocatalytic performance and stability of visible-light-driven Z-scheme CdS/Ag/g-C₃N₄ nanosheets photocatalyst

Yingying Qin, Hong Li, Hongjun Dong, Changchang Ma, Xiuying Li, Xinlin Liu, Yang Liu, Chunxiang Li, Yongsheng Yan

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

A novel Z-scheme CdS/Ag/g-C₃N₄ nanosheets photocatalyst was synthesized by combining the hydrothermal and photo-deposition techniques, where Ag nanoparticles as carrier transport channels significantly improve the separation efficiency of electron-hole pairs. Outstanding photocatalytic activity was observed, which indicates that the constructed Z-scheme can retain the oxidizing ability of the CdS valence band and reducing ability of the g-C₃N₄ conduction band. In addition, trapping experiments and ESR measurement reveal that the superoxide radical (O₂^-) and holes (h⁺) are the predominant active species. This study provides a new approach to perfect the Z-scheme photocatalytic system for application in the efficient treatment of persistent pollutants in wastewater.

Original language	English
Pages (from-to)	12437-12448
Number of pages	12
Journal	New Journal of Chemistry
Volume	42
Issue number	15
DOIs	https://doi.org/10.1039/c8nj02057d
State	Published - 2018
Externally published	Yes

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title = "Enhanced photocatalytic performance and stability of visible-light-driven Z-scheme CdS/Ag/g-C3N4 nanosheets photocatalyst",

abstract = "A novel Z-scheme CdS/Ag/g-C3N4 nanosheets photocatalyst was synthesized by combining the hydrothermal and photo-deposition techniques, where Ag nanoparticles as carrier transport channels significantly improve the separation efficiency of electron-hole pairs. Outstanding photocatalytic activity was observed, which indicates that the constructed Z-scheme can retain the oxidizing ability of the CdS valence band and reducing ability of the g-C3N4 conduction band. In addition, trapping experiments and ESR measurement reveal that the superoxide radical (O2-) and holes (h+) are the predominant active species. This study provides a new approach to perfect the Z-scheme photocatalytic system for application in the efficient treatment of persistent pollutants in wastewater.",

author = "Yingying Qin and Hong Li and Hongjun Dong and Changchang Ma and Xiuying Li and Xinlin Liu and Yang Liu and Chunxiang Li and Yongsheng Yan",

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doi = "10.1039/c8nj02057d",

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T1 - Enhanced photocatalytic performance and stability of visible-light-driven Z-scheme CdS/Ag/g-C3N4 nanosheets photocatalyst

AU - Qin, Yingying

AU - Li, Hong

AU - Dong, Hongjun

AU - Ma, Changchang

AU - Li, Xiuying

AU - Liu, Xinlin

AU - Liu, Yang

AU - Li, Chunxiang

AU - Yan, Yongsheng

PY - 2018

Y1 - 2018

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AB - A novel Z-scheme CdS/Ag/g-C3N4 nanosheets photocatalyst was synthesized by combining the hydrothermal and photo-deposition techniques, where Ag nanoparticles as carrier transport channels significantly improve the separation efficiency of electron-hole pairs. Outstanding photocatalytic activity was observed, which indicates that the constructed Z-scheme can retain the oxidizing ability of the CdS valence band and reducing ability of the g-C3N4 conduction band. In addition, trapping experiments and ESR measurement reveal that the superoxide radical (O2-) and holes (h+) are the predominant active species. This study provides a new approach to perfect the Z-scheme photocatalytic system for application in the efficient treatment of persistent pollutants in wastewater.

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Enhanced photocatalytic performance and stability of visible-light-driven Z-scheme CdS/Ag/g-C₃N₄ nanosheets photocatalyst

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