Pt-Ni与Pd-Ni纳米薄膜的电化学制备和乙醇电催化性能研究(英文)  

Electrochemical Preparation of Nanostructural Pt-Ni and Pd-Ni Films for Ethanol Electro-Oxidation

作　　者：姚陈忠[1] 马会宣[1] 卫博慧[2] 

机构地区：[1]运城学院应用化学系,山西运城044000 [2]运城学院图书馆,山西运城044000

出　　处：《电化学》2012年第2期162-168,共7页Journal of Electrochemistry

基　　金：supported by NSFC(No.51101138,No.20873184,No.90923008);S&T Project of Shanxi Department of Education(No.20111024);Innovation and Entrepreneurship for College Students Project in Shanxi Province(No.2011343);Young Teacher Starting-up Research of Yuncheng University(No.YQ-2010013)

摘　　要：通过电沉积法在Ti基体上制备具有纳米结构的Pt-Ni和Pd-Ni薄膜,前者呈纳米花瓣形状,厚度为10～20 nm,后者主要由纳米颗粒组成,大小为50～60 nm.XRD测试结果显示,Pt-Ni和Pd-Ni纳米薄膜结晶程度较差.循环伏安法测试薄膜对乙醇电催化氧化的性能,结果表明Pt-Ni和Pd-Ni纳米薄膜可使乙醇起始氧化电位分别负移至-0.74 V和-0.71 V,且在碱性介质中加Ni可提高催化剂的活性和抗毒化性能.The Pt-Ni and Pd-Ni films were successfully prepared on Ti substrates by electrodeposition method. The porous Pt-Ni nanoflakes appeared to be uniform with the thickness of the slices about 10 ～ 20 nm. The porous Pd-Ni nanoparticles with a flower shape appeared to be uniform with the diameters of 50 ～ 60 nm. The XRD patterns also indicated that the Pd-Ni and Pt-Ni nanostructures have the poor crystallinity. The onset potentials of ethanol oxidation were negatively shifted to - 0. 74 V on Pt-Ni electrodes and - 0. 71 V on Pd-Ni electrodes,respectively. Addition of Ni could enhance catalytic activities and antitoxic properties of Pt,as well as the electro-catalytic activities of Pd for ethanol oxidation in alkaline media.

关 键 词：纳米结构 电沉积 多孔结构 乙醇电催化 

分 类 号：TB383.2[一般工业技术—材料科学与工程]