Issue 12, 2023

Interfacial engineering of FeWO4/Fe2O3 homometallic heterojunctions for synergistic electrocatalytic water splitting

Abstract

Heterojunction construction is a crucial strategy in developing efficient electrocatalysts. However, their structures are not well-suited for achieving high-performance dual functions due to the surface reorganization resulting from the separation and redeposition of heterometallic centers. A novel FeWO4/Fe2O3 catalyst was synthesized via pyrolysis to form a homometallic heterojunction, which exhibits remarkable electrocatalytic activity towards oxygen/hydrogen evolution reactions and overall water splitting. DFT calculations indicate that the FeWO4/Fe2O3 heterojunctions regulate the electronic states, accelerate charge transfer, and enhance electrocatalytic activity. As anticipated, the FeWO4/Fe2O3 heterostructure produced in 1 M KOH solution exhibits a low overpotential of 315 mV at 10 mA cm−2 for the OER and 38 mV for the HER. Furthermore, the FeWO4/Fe2O3 electrode can efficiently operate at a voltage of only 1.62 V in an electrolyzer to produce a current density of 10 mA cm−2 and maintain exceptional stability during prolonged operation at a constant voltage.

Graphical abstract: Interfacial engineering of FeWO4/Fe2O3 homometallic heterojunctions for synergistic electrocatalytic water splitting

Supplementary files

Article information

Article type
Research Article
Submitted
20 Mar 2023
Accepted
13 May 2023
First published
26 May 2023

Inorg. Chem. Front., 2023,10, 3675-3685

Interfacial engineering of FeWO4/Fe2O3 homometallic heterojunctions for synergistic electrocatalytic water splitting

R. Li, H. Zhang, J. Chen, K. Zhang, W. Li, X. Feng, H. Zhang, I. D. Abdoulkader, X. Zhang and T. Zhang, Inorg. Chem. Front., 2023, 10, 3675 DOI: 10.1039/D3QI00519D

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