A phosphorus modified mesoporous AuRh film as an efficient bifunctional electrocatalyst for urea-assisted energy-saving hydrogen production. Issue 6 (13th January 2022)

• Record Type: Journal Article
• Authors: Zhang, Mei; Duan, Zhongyao; Cui, Lin; Yu, Hongjie; Wang, Ziqiang; Xu, You; Li, Xiaonian; Wang, Liang; Wang, Hongjing
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 6(2022)
• Page Start: 3086
• Page End: 3092
• Publication Date: 2022-01-13
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1ta09061e
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : 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. Abstract : 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 H2 production via hybrid water electrolysis.