Volume 1, 2023

In situ solvothermal reduction engineering enables delicate control over surface-rich oxygen vacancies on Bi2WO6 for highly efficient photocatalytic CO2 reduction

Abstract

The high binding energy of C[double bond, length as m-dash]O bonds in CO2 severely inhibits the photocatalytic CO2 reduction (PCR) activity. Constructing oxygen vacancies (Vo) is considered as a fascinating strategy to promote the capture and activation of CO2 molecules. The main challenge, however, lies in the delicate control of the Vo distribution, since the bulk Vo can act as a recombination centre for photogenerated electron–hole pairs. Here, an in situ solvothermal reduction strategy is presented by programming temperature to accurately control the Vo distribution on the catalytic surface. Taking Bi2WO6 as a model, surface-rich Vo on Bi2WO6 (Sur-Vo-BWO) were generated. The governable Vo distribution strategy remarkably increases the PCR dynamics with a high CO evolution rate for Sur-Vo-BWO (18.73 μmol g−1 h−1), which is 8.32 times more than that of the Vo-free control sample. This work paves a new pathway to implement delicate control of the Vo distribution on the catalysts for precisely tuned catalytic activity.

Graphical abstract: In situ solvothermal reduction engineering enables delicate control over surface-rich oxygen vacancies on Bi2WO6 for highly efficient photocatalytic CO2 reduction

Supplementary files

Article information

Article type
Communication
Submitted
27 yan 2023
Accepted
07 mar 2023
First published
13 mar 2023
This article is Open Access
Creative Commons BY-NC license

EES. Catal., 2023,1, 495-503

In situ solvothermal reduction engineering enables delicate control over surface-rich oxygen vacancies on Bi2WO6 for highly efficient photocatalytic CO2 reduction

H. Liu, Y. Chen, W. Wang, X. He, Z. He, L. Li, S. Zeng, R. Cao and G. Zhang, EES. Catal., 2023, 1, 495 DOI: 10.1039/D3EY00019B

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements