articleNature CommunicationsJul 12, 2023GOLD OA

Reconstructed Ir‒O‒Mo species with strong Brønsted acidity for acidic water oxidation

Tianjin University · Collaborative Innovation Center of Chemical Science and Engineering Tianjin · +3 more institutions

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Abstract

Abstract Surface reconstruction generates real active species in electrochemical conditions; rational regulating reconstruction in a targeted manner is the key for constructing highly active catalyst. Herein, we use the high-valence Mo modulated orthorhombic Pr 3 Ir 1− x Mo x O 7 as model to activate lattice oxygen and cations, achieving directional and accelerated surface reconstruction to produce self-terminated Ir‒O bri ‒Mo (O bri represents the bridge oxygen) active species that is highly active for acidic water oxidation. The doped Mo not only contributes to accelerated surface reconstruction due to optimized Ir‒O covalency and more prone dissolution of Pr, but also affords the improved durability…

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