Facet-dependent intrinsic activity of single \(Co_{3}O_{4}\) nanoparticles for oxygen evolution reaction
- Deciphering the influence of nanocatalyst morphology on their catalytic activity in the oxygen evolution reaction (OER), the limiting reaction in water splitting process, is essential to develop highly active precious metal-free catalysts, yet poorly understood. The intrinsic OER activity of \(Co_{3}O_{4}\) nanocubes and spheroids is probed at the single particle level to unravel the correlation between exposed facets, (001) vs. (111), and activity. Single cubes with predominant (001) facets show higher activity than multi-faceted spheroids. Density functional theory calculations of different terminations and reaction sites at (001) and (111) surfaces confirm the higher activity of the former, expressed in lower overpotentials. This is rationalized by a change in the active site from octahedral to tetrahedral Co and the potential-determining step from *OH to *O for the cases with lowest overpotentials at the (001) and (111) surfaces, respectively. This approach enables the identification of highly active facets to guide shape-selective syntheses of improved metal oxide nanocatalysts for water oxidation.
Author: | Zhibin LiuGND, Hatem M. A. AminORCiDGND, Yuman PengGND, Manuel CorvaORCiDGND, Rossitza PentchevaGND, Kristina TschulikORCiDGND |
---|---|
URN: | urn:nbn:de:hbz:294-94089 |
DOI: | https://doi.org/10.1002/adfm.202210945 |
Parent Title (English): | Advanced functional materials |
Publisher: | Wiley |
Place of publication: | Hoboken, New Jersey |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2022/11/09 |
Date of first Publication: | 2022/10/28 |
Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
Tag: | MITICAT, Projekt ID 94924 |
Volume: | 2022 |
First Page: | 2210945-1 |
Last Page: | 2210945-8 |
Note: | Projekt MITICAT, Project ID: 949724 |
Relation (DC): | info:eu-repo/grantAgreement/EC/H2020/949724 |
Institutes/Facilities: | Max-Planck-Institut für Eisenforschung, Düsseldorf |
Lehrstuhl für Analytische Chemie II, Elektrochemie und Nanoskalige Materialien | |
OpenAIRE: | OpenAIRE |
faculties: | Fakultät für Chemie und Biochemie |
Licence (English): | Creative Commons - CC BY 4.0 - Attribution 4.0 International |