Issue 11, 2023

ZIF-8@CoFe2O4 as a highly efficient bifunctional electrocatalyst for the methanol oxidation and oxygen evolution reactions

Abstract

Developing low-cost, highly active, and stable electrocatalysts is essential to realize various renewable energy storage and conversion systems. In particular, zeolite imidazole frameworks (ZIFs) and ZIF-based composites have garnered considerable interest for energy-related applications. In this study, ZIF-8@CoFe2O4 composites are synthesized using a simple and facile method. Three ZIF-8@CoFe2O4 composites named ZCFO-1, ZCFO-2, and ZCFO-3, synthesized with varying concentrations of CoFe2O4 (10, 20, and 40.0 mg, respectively), are used. The synthesized ZCFO-composites are used as catalysts in the electrocatalytic methanol oxidation reaction (MOR) and oxygen evolution reaction (OER). In the MOR, the ZCFO-1 electrocatalyst exhibits a higher current density and stability for more than 6 h than other electrocatalysts. In addition, the synthesized electrocatalysts are tested for the OER, and ZCFO-1 exhibits a lower overpotential of 330 mV and a Tafel slope of 84 mV dec−1. The synthesized ZCFO-1 electrocatalyst exhibits higher activity and stability for both the MOR and OER, thus suggesting that it is an alternative to noble metal electrocatalysts.

Graphical abstract: ZIF-8@CoFe2O4 as a highly efficient bifunctional electrocatalyst for the methanol oxidation and oxygen evolution reactions

Supplementary files

Article information

Article type
Paper
Submitted
20 Mar 2023
Accepted
04 May 2023
First published
07 May 2023

Catal. Sci. Technol., 2023,13, 3445-3455

ZIF-8@CoFe2O4 as a highly efficient bifunctional electrocatalyst for the methanol oxidation and oxygen evolution reactions

T. V. M. Sreekanth, K. Prasad, J. Yoo, J. Kim and K. Yoo, Catal. Sci. Technol., 2023, 13, 3445 DOI: 10.1039/D3CY00378G

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