Issue 22, 2022

Highly efficient electrochemical CO2 reduction over crystalline–amorphous In2O3–CeOx heterostructures

Abstract

The electrochemical reduction reaction of CO2 (CO2RR) to fuels and chemicals is a promising approach to consume greenhouse gases and mitigate the dependence on fossil fuels. Herein, we synthesized an effective crystalline–amorphous In2O3–CeOx heterostructure, which exhibited high catalytic performance for CO2-to-formate conversion. The maximum faradaic efficiency (FE) of 94.8% was achieved, and above 90% FE can be maintained in a wide potential range from −0.8 to −1.2 V vs. RHE. Detailed studies showed that In2O3 functioned as the active site for CO2 activation and formate formation, and the amorphous CeOx was beneficial for the electron transfer, leading to the electronic structure reconfiguration of In2O3. Hence, the In2O3–CeOx heterostructure enhanced the adsorption of *OCHO intermediates and lowered the energy barrier forming *HCOOH from *OCHO.

Graphical abstract: Highly efficient electrochemical CO2 reduction over crystalline–amorphous In2O3–CeOx heterostructures

Supplementary files

Article information

Article type
Research Article
Submitted
29 iyl 2022
Accepted
29 sen 2022
First published
30 sen 2022

Inorg. Chem. Front., 2022,9, 5926-5931

Highly efficient electrochemical CO2 reduction over crystalline–amorphous In2O3–CeOx heterostructures

C. Wang, Z. Wu, G. Liu, S. Bai, L. Guo, L. He and Y. Song, Inorg. Chem. Front., 2022, 9, 5926 DOI: 10.1039/D2QI01646J

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