Issue 10, 2023

Understanding the synergistic effect of piezoelectric polarization and the extra electrons contributed by oxygen vacancies on an efficient piezo-photocatalysis CO2 reduction

Abstract

Global climate is facing an unprecedented challenge due to greenhouse gases. Fortunately, piezoelectric catalysis can promote the performance of photocatalysis to reduce CO2, making the efficiency of using piezo-photocatalysis to reduce CO2 better than that of piezoelectric catalysis and photocatalysis. This work focuses on the synthesis of oxygen vacancy regulated BiFeO3 (BiFeO3−x) for the reduction of CO2 by piezo-photocatalysis. When the piezo-photocatalysis time is 9 h, the yields of CO2 reduction to CO and CH4 reach as high as 142.6 μmol g−1 and 32.8 μmol g−1, respectively. This result is benefited by the synergistic effect of piezoelectric polarization and the extra electrons contributed by oxygen vacancies. Meanwhile, the oxygen vacancies also greatly improve the performance of the piezo-photocatalysis reduction of CO2. This work may open a new window and provides new ideas for CO2 reduction by piezo-photocatalysis.

Graphical abstract: Understanding the synergistic effect of piezoelectric polarization and the extra electrons contributed by oxygen vacancies on an efficient piezo-photocatalysis CO2 reduction

Supplementary files

Article information

Article type
Research Article
Submitted
02 Mar 2023
Accepted
09 Apr 2023
First published
10 Apr 2023

Inorg. Chem. Front., 2023,10, 2939-2950

Understanding the synergistic effect of piezoelectric polarization and the extra electrons contributed by oxygen vacancies on an efficient piezo-photocatalysis CO2 reduction

Q. Xu, J. Jiang, X. Sheng, Q. Jing, X. Wang, L. Duan and H. Guo, Inorg. Chem. Front., 2023, 10, 2939 DOI: 10.1039/D3QI00405H

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