文献类型：期刊文献

英文题名：RuZr alloy supported on Zr oxynitride as efficient pH-universal hydrogen oxidation catalysts

作者：Dong, Mengyang[1,2];Li, Mingli[1];Wu, Yuming[3];Zheng, Zhong[4];Knibbe, Ruth[4];Wu, Zhenzhen[1];Fu, Bo[1];Xing, Chao[2];Johannessen, Bernt[5];Kang, Jian[6];Fan, Kaicai[7];Wang, Liang[1];Zhang, Kaidi[1];Fu, Huai Qin[1];Zou, Yu[1];Zhang, Lei[1];Dou, Yuhai[8];Zhu, Zhengju[9];Wang, Yun[1];Yin, Huajie[6];Liu, Porun[1];Zhao, Huijun[1]

机构：[1]Griffith Univ, Ctr Catalysis & Clean Energy, Sch Environm & Sci, Gold Coast Campus, Gold Coast, Qld 4222, Australia;[2]Univ Queensland, UQ Dow Ctr Sustainable Engn Innovat, Sch Chem Engn, St Lucia, Qld 4072, Australia;[3]Macquarie Univ, Sch Engn, Sydney, NSW 2109, Australia;[4]Univ Queensland, Sch Mech & Min Engn, St Lucia, Qld 4072, Australia;[5]ANSTO, Australian Synchrotron, Clayton, Vic 3168, Australia;[6]Chinese Acad Sci, Ctr Environm & Energy Nanomat,Hefei Inst Phys Sci, Key Lab Mat Phys,Anhui Key Lab Nanomat & Nanotechn, CAS Ctr Excellence Nanosci,Inst Solid State Phys, Hefei 230031, Anhui, Peoples R China;[7]Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China;[8]Univ Shanghai Sci & Technol, Inst Energy Mat Sci, Shanghai 200093, Peoples R China;[9]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2026

卷号：391

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20261020226973);WOS:【SCI-EXPANDED(收录号:WOS:001714137300001)】；

基金：This work was financially supported by the Australian Research Council Discovery Projects (DP200100965, DP210104010 and DP230102504) , the Australia's Economic Accelerator Seed Grant (AE230100270) and Griffith University Postdoctoral Fellowship. R.K. and Z.Z acknowledge financial support from the Australian Research Council (FT220100666) . The authors thank the Australian Synchrotron, a part of ANSTO for XAS experiments. The authors acknowledge the technical support of Centre for Microscopy and Microanalysis at the University of Queensland.

语种：英文

外文关键词：Hydrogen oxidation reaction; RuZr alloy; Zirconium oxynitride; Binding energy modulation; PH-universal catalysis

摘要：This study investigates a pH-universal hydrogen oxidation reaction (HOR) catalyst based on a RuZr alloy supported on zirconium oxynitride, enabling simultaneous optimization of hydrogen and hydroxyl binding energies. The catalyst was synthesized via a urea-glass crystallization route, yielding highly dispersed RuZr alloy nanoparticles strongly coupled with the oxynitride support. RuZr@ZON exhibits high HOR activity with exchange current densities (J0) of 2.14 mA cm- 2 in alkaline, 2.56 mA cm- 2 in acidic and 2.02 mA cm- 2 in neutral media, and achieves a Ru atomic dispersion of 87.9% with an atomic utilization of 5.97%, demonstrating pronounced tolerance to CO poisoning across all pH environments. The enhanced performance originates from a cooperative Volmer-Heyrovsky mechanism facilitated by balanced HBE/OHBE and accelerated H2O desorption, as revealed by electrochemical analysis and DFT calculations. This work establishes a clear structure-activity relationship and provides an effective strategy for designing durable, atom-efficient HOR catalysts operable across a wide pH range.