A phosphorus modified mesoporous AuRh film as an efficient bifunctional electrocatalyst for urea-assisted energy-saving hydrogen production

Hybrid water electrolysis composed of the anodic urea oxidation reaction (UOR) and the cathodic hydrogen evolution reaction (HER) has been regarded as a green and sustainable technique for hydrogen production, and its efficiency highly depends on the identification of active electrocatalysts. Herein...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2022-02, Vol.1 (6), p.386-392
Main Authors: Zhang, Mei, Duan, Zhongyao, Cui, Lin, Yu, Hongjie, Wang, Ziqiang, Xu, You, Li, Xiaonian, Wang, Liang, Wang, Hongjing
Format: Article
Language:English
Subjects:
Anodizing
Bimetals
Catalysts
Electrocatalysts
Electrolysis
Energy conservation
Hydrogen
Hydrogen evolution reactions
Hydrogen production
Hydrogen-based energy
Metal foams
Micelles
Oxidation
Phosphating (coating)
Phosphorus
Synergism
Urea
Ureas
Water conservation
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Summary:Hybrid water electrolysis composed of the anodic urea oxidation reaction (UOR) and the cathodic hydrogen evolution reaction (HER) has been regarded as a green and sustainable technique for hydrogen production, and its efficiency highly depends on the identification of active electrocatalysts. Herein, a phosphorus modified mesoporous AuRh film grown on Ni foam (P-mAuRh film/NF) is synthesized via the combination of an in situ micelle assisted chemical displacement method and post phosphorization treatment process, and serves as a highly active and durable electrocatalyst for both the HER and UOR. Impressively, the self-supported P-mAuRh film/NF as both the anodic and cathodic catalyst can efficiently drive overall urea-assisted water electrolysis. The outstanding electrocatalytic performance of P-mAuRh film/NF is attributed to the synergism of the mesoporous film nanoarchitecture and optimized bimetallic composition, as well as the electron interaction between metal and nonmetal. This research offers a universal route to synthesize bifunctional nonmetal-metal mesoporous films for energy-saving H 2 production via hybrid water electrolysis. A phosphorus modified mesoporous AuRh film is constructed via a two-step strategy and serves as a bifunctional electrocatalyst for urea-assisted energy saving hydrogen production.
ISSN:2050-7488
2050-7496
DOI:10.1039/d1ta09061e