Issue 9, 2024

Dual built-in spontaneous electric fields in an S-scheme heterojunction for enhanced photocatalytic H2O2 production

Abstract

Hydrogen peroxide production using solar energy is of great significance because it can ameliorate the energy crisis and environmental pollution. Bismuth vanadate (BiVO4) is a promising photocatalyst, but the sluggish oxygen reduction reaction (ORR) limits its H2O2 production. In this study, a step-scheme (S-scheme) heterojunction with tightly coupled interfaces consisting of BiVO4 and Cu2O was prepared by a photodeposition method, and a MnOOH cocatalyst was modified on the BiVO4 surface. The MnOOH/BiVO4/Cu2O photocatalyst exhibited an outstanding H2O2-generation performance of 112 μmol L−1 h−1 in pure water. The increased H2O2-evolution activity was ascribed to the formation of dual built-in spontaneous electric fields in the S-scheme heterojunction, which significantly promoted the dual directed charge transfer in the bulk phase of single-crystal BiVO4 and the interface of the S-scheme heterojunction. This study offers valuable insights for constructing promising S-scheme photocatalysts for H2O2 generation.

Graphical abstract: Dual built-in spontaneous electric fields in an S-scheme heterojunction for enhanced photocatalytic H2O2 production

Supplementary files

Article information

Article type
Paper
Submitted
31 Jan 2024
Accepted
01 Apr 2024
First published
02 Apr 2024

Catal. Sci. Technol., 2024,14, 2514-2521

Dual built-in spontaneous electric fields in an S-scheme heterojunction for enhanced photocatalytic H2O2 production

J. Huang, H. Shi, X. Wang, P. Wang, F. Chen and H. Yu, Catal. Sci. Technol., 2024, 14, 2514 DOI: 10.1039/D4CY00141A

To request permission to reproduce material from this article, 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 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