Issue 1, 2023

Crystal phase engineering SiC nanosheets for enhancing photocatalytic CO2 reduction

Abstract

The reduction of CO2 by photocatalysis has been widely considered, but the rapid recombination of photogenerated carriers on photocatalysts has become a major constraint on efficiency. Herein, we prepare SiC nanosheets with 2H and 3C phase junctions by an in situ high-pressure solvothermal method. The prepared 2H–3C SiC nanosheets promote charge carrier separation and the photocatalytic reduction efficiency of CO2 to CO is greatly improved without using a sacrificial agent. The CO production rate of this photocatalyst reached 6.29 μmol g−1 h−1, which is about 2.4 times that of pure 3C-SiC. This work deepens the understanding of the influence of the heterophase on photocatalytic activity and provides a novel idea for the application of SiC in catalysis.

Graphical abstract: Crystal phase engineering SiC nanosheets for enhancing photocatalytic CO2 reduction

Supplementary files

Article information

Article type
Paper
Submitted
19 okt 2022
Accepted
21 nov 2022
First published
23 nov 2022
This article is Open Access
Creative Commons BY license

Environ. Sci.: Adv., 2023,2, 132-139

Crystal phase engineering SiC nanosheets for enhancing photocatalytic CO2 reduction

B. Wang, X. Shang, J. Zhang, J. Shen, X. Wang and Z. Zhang, Environ. Sci.: Adv., 2023, 2, 132 DOI: 10.1039/D2VA00253A

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