Yuan, J; Feng, J; Li, G; Song, Y; Yu, N; Chen, X; He, G; ... Ni, M; + view all Yuan, J; Feng, J; Li, G; Song, Y; Yu, N; Chen, X; He, G; Tan, Y; Ni, M; - view fewer (2025) Enhanced pH-universal hydrogen evolution reactions on the Rh/MoO3 electrocatalysts. Chemical Engineering Journal , 514 , Article 163260. 10.1016/j.cej.2025.163260.

Text He_Enhanced pH-universal hydrogen evolution reactions on the Rh_MoO3 electrocatalysts_AAM.pdf Access restricted to UCL open access staff until 3 May 2026. Download (2MB)

Abstract

Developing efficient electrocatalysts for pH-universal hydrogen evolution reaction (HER) is particularly appealing due to the growing demands of clean and renewable energy. Herein, a facile electrodeposition method to construct Rh nanoclusters supported by molybdenum trioxide micro sheets (Rh/MoO3) was developed. The use of MoO3 support can enhance hydrogen production due to the accelerated electron transfer by Mo. The interaction between the interface of Rh and MoO3 modulates the hydrogen adsorption energies. The interfacial electron transfer from Rh to Mo optimizes H2O adsorption, adjusts the d-band center, and fine-tunes the hydrogen binding energy, hence increasing the inherent hydrogen-evolving activities. Therefore, the Rh/MoO3 catalyst shows outstanding performance with very low overpotentials of only 34, 49, and 29 mV at a current density of −10 mA cm−2 in 1.0 M PBS, 0.5 M H2SO4, and 1.0 M KOH electrolytes, respectively. Our findings also help to create effective catalysts for pH-universal HER by leveraging particle-support interactions.

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