Crystal phase-controlled growth of PtCu and PtCo alloys on 4H Au nanoribbons for electrocatalytic ethanol oxidation reaction

作     者：Jie Wang Jian Zhang Guigao Liu Chongyi Ling Bo Chen Jingtao Huang Xiaozhi Liu Bing Li An-Liang Wang Zhaoning Hu Ming Zhou Ye Chen Hongfei Cheng Jiawei Liu Zhanxi Fan Nailiang Yang Chaoliang Tan Lin Gu Jinlan Wang Hua Zhang Jie Wang;Jian Zhang;Guigao Liu;Chongyi Ling;Bo Chen;Jingtao Huang;Xiaozhi Liu;Bing Li;An-Liang Wang;Zhaoning Hu;Ming Zhou;Ye Chen;Hongfei Cheng;Jiawei Liu;Zhanxi Fan;Nailiang Yang;Chaoliang Tan;Lin Gu;Jinlan Wang;Hua Zhang

作者机构：Department of ChemistryCity University of Hong KongHong KongChina Center for Programmable MaterialsSchool of Materials Science and EngineeringNanyang Technological University50 Nanyang AvenueSingapore 639798Singapore School of PhysicsSoutheast UniversityNanjing 211189China Institute of PhysicsBeijing National Laboratory for Condensed Matter PhysicsChinese Academy of SciencesBeijing 100190China Institute of Materials Research and Engineering(IMRE)Agency for Science Technology and Research(A*STAR)Singapore 138634Singapore Hong Kong Branch of National Precious Metals Material Engineering Research Center(NPMM)City University of Hong KongHong KongChina 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2020年第13卷第7期

页      面：1970-1975页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 070205[理学-凝聚态物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：MOE under AcRF Tier 2(Nos.MOE2016-T2-2-103 and MOE2017-T2-1-162) NTU under Start-Up Grant(No.M4081296.070.500000)in Singapore We would like to acknowledge the Facility for Analysis,Characterization,Testing and Simulation,Nanyang Technological University,Singapore,for use of their electron microscopy and X-ray facilities.Z.X.F.and H.Z.thank the financial support from ITC via Hong Kong Branch of National Precious Metals Material Engineering Research Center(NPMM) acknowledge the start-up grants(Nos.9380100,9610480 and 7200651) grants(Nos.9610478 and 1886921)in City University of Hong Kong. 

主　　题：crystal phase 4H hexagonal face-ce ntered cubic ethanol oxidation reaction phase engineering of nanomaterials 

摘      要：Crystal phase can greatly affect the physicochemical properties and applications of nanomaterials.However,it stil remains a great challenge to synthesize nanostructures with the same composition and morphology but different phases in order to explore the phase-dependent properties and applications.Herein,we report the crystal phase-controlled synthesis of PtCu alloy shells on 4H Au nanoribbons(NRBs),referred to as 4H-Au NRBs,to form the 4H-Au@PtCu core-shell NRBs.By tuning the thickness of PtCu,4H-PtCu and face-centered cubic(cc)phase PICu(cc-PtCu)alloy shells are successtully grown on the 4H-Au NRB cores.This thickness-dependent phase-controlled growth strategy can also be used to grow PtCo alloys with 4H or fcc phase on 4H-Au NRBs.Significantly,when used as electrocatalysts for the ethanol oxidation reaction(EOR)in alkaline media,the 4H-Au@4H-PtCu NRBs show much better EOR performance than the 4H-Au@fcc-PtCu NRBs,and both of them possess superior performance compared to the commercial Pt black.Our study provides a strategy on phase-contolled synthesis of nanomaterials used for crystal phase-dependent applications.