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Zn-In-O electrocatalysts with co-existing ZnO and In2O3 phases for efficient reduction of CO2 to formate through sacrificial mechanism.
- Source :
-
Journal of Catalysis . Aug2023, Vol. 424, p211-220. 10p. - Publication Year :
- 2023
-
Abstract
- [Display omitted] • The Zn-In-O catalyst exhibits FE HCOO− (94.25 %) at −1.16 V RHE. • Rich interface effects improve the catalytic performance of Zn-In-O. • In 2 O 3 active center of Zn-In-O is protected from reducing by sacrificing ZnO phase. Electrochemical CO 2 reduction reaction (eCO 2 RR) is considered an efficient approach to produce value-added chemicals and fuels. In this paper, a series of MOF-derived composite catalysts with coexisting In 2 O 3 and ZnO are fabricated using a simple process for eCO 2 RR to produce formate. The Zn-In-O/800 catalyst achieves a formate Faradaic efficiency (FE HCOO−) of 94.25 % at −1.16 V vs. RHE, which can maintain over 89 % after 30 h in a stability test. The electrochemical evidence and density functional theory analysis show that the strong interface effect between In 2 O 3 and ZnO can enhance the CO 2 adsorption and activation, and promote the conversion of CO 2 to formate. In addition, the ZnO phase can protect In 2 O 3 , as the main active site, from being reduced to a certain extent for a long time under negative potential, which ensures the high stability of the composite catalyst. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219517
- Volume :
- 424
- Database :
- Academic Search Index
- Journal :
- Journal of Catalysis
- Publication Type :
- Academic Journal
- Accession number :
- 164301067
- Full Text :
- https://doi.org/10.1016/j.jcat.2023.05.023