Facet‐Dependent Intrinsic Activity of Single Co <sub>3</sub> O <sub>4</sub> Nanoparticles for Oxygen Evolution Reaction
نویسندگان
چکیده
Deciphering the influence of nanocatalyst morphology on their catalytic activity in oxygen evolution reaction (OER), limiting water splitting process, is essential to develop highly active precious metal-free catalysts, yet poorly understood. The intrinsic OER Co3O4 nanocubes and spheroids probed at single particle level unravel correlation between exposed facets, (001) vs. (111), activity. Single cubes with predominant facets show higher than multi-faceted spheroids. Density functional theory calculations different terminations sites (111) surfaces confirm former, expressed lower overpotentials. This rationalized by a change site from octahedral tetrahedral Co potential-determining step *OH *O for cases lowest overpotentials surfaces, respectively. approach enables identification guide shape-selective syntheses improved metal oxide nanocatalysts oxidation.
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ژورنال
عنوان ژورنال: Advanced Functional Materials
سال: 2022
ISSN: ['1616-301X', '1616-3028']
DOI: https://doi.org/10.1002/adfm.202210945