Ag-decorated flower-like WSe2 for enhanced photocatalytic CO2 reduction

•The flower-like Ag/WSe2 was successfully synthesized;•The decorated Ag NPs were uniformly decorated on the surface of WSe2;•Ag NPs promote the visible light absorption and accelerate the adsorption of CO2;•The Ag NPs could accelerate the charge separation and transport of e–-h+ pairs;•The prepared...

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Bibliographic Details
Published in:Materials letters 2024-05, Vol.362, p.136139, Article 136139
Main Authors: Chen, Xudan, Wang, Yan, Lang, Junwei, Wu, Liyuan, Yan, Changzeng, Li, Yuehui
Format: Article
Language:English
Subjects:
2D materials
Ag/WSe2
Energy storage and conversion
Interfaces
Photocatalytic CO2 Reduction
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Summary:•The flower-like Ag/WSe2 was successfully synthesized;•The decorated Ag NPs were uniformly decorated on the surface of WSe2;•Ag NPs promote the visible light absorption and accelerate the adsorption of CO2;•The Ag NPs could accelerate the charge separation and transport of e–-h+ pairs;•The prepared Ag/WSe2 exhibited an enhanced CO yield rate of 14.80 µmol g–1h−1. In this work, flower-like Ag/WSe2 was synthesized through solvothermal method and in situ photodeposition. Ag nanoparticles were uniformly dispersed and the catalyst exhibited a much better CO yield rate of 14.80 µmol g–1h−1 as compared with that of WSe2 (5.24 µmol g–1h−1). Based on photoelectrochemical investigation, this was mainly attributed to the enhancement of visible light absorption along with improved charge separation and transfer at the interface of Ag/WSe2.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2024.136139