Issue 8, 2024

A well-designed hierarchical Bi19S27Br3 nanorods@SnIn4S8 nanosheet core–shell S-scheme heterostructure for robust photothermal-assisted photocatalytic CO2 reduction

Abstract

Photocatalysis, which can use solar energy to convert carbon dioxide into chemical fuels, is one of the most promising techniques to mitigate the greenhouse effect. However, due to the insufficient utilization of solar energy, low photocatalytic efficiency and poor stability of photocatalysts, the development of photocatalytic CO2 reduction technology is severely limited. In this study, Bi19S27Br3 nanorod@SnIn4S8 nanosheet heterojunction composites with a novel core–shell structure are designed and prepared for the first time, and the excellent photothermal effect of Bi19S12Br3 nanorods induced by near-infrared light absorption is successfully applied to photocatalytic reactions. Benefiting from the unique hierarchical architecture, close interfacial contact, special S-scheme charge transfer mode, and excellent photothermal synergism, the constructed Bi19S27Br3@SnIn4S8 composite photocatalysts exhibit outstanding photothermal-assisted photocatalytic CO2 reduction performance under full-spectrum irradiation. Without the addition of sacrificial agents and co-catalysts, the average CO yield is up to 35.63 μmol g−1 h−1, reaching 7.2 and 8.7 times higher than that of pure Bi19S27Br3 and SnIn4S8 samples. This work provides a new strategy and idea for the development of high-performance composite photocatalysts.

Graphical abstract: A well-designed hierarchical Bi19S27Br3 nanorods@SnIn4S8 nanosheet core–shell S-scheme heterostructure for robust photothermal-assisted photocatalytic CO2 reduction

Supplementary files

Article information

Article type
Paper
Submitted
21 Nov 2023
Accepted
16 Jan 2024
First published
17 Jan 2024

J. Mater. Chem. A, 2024,12, 4513-4524

A well-designed hierarchical Bi19S27Br3 nanorods@SnIn4S8 nanosheet core–shell S-scheme heterostructure for robust photothermal-assisted photocatalytic CO2 reduction

W. Jia, R. Xiong, Y. Sun, Y. Xiao, B. Cheng and S. Lei, J. Mater. Chem. A, 2024, 12, 4513 DOI: 10.1039/D3TA07169C

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