Controlled synthesis of platinum catalysts on Au nanoparticles and their electrocatalytic property for methanol oxidation

被引:55
作者
Tang, H [1 ]
Chen, JH [1 ]
Wang, MY [1 ]
Nie, LH [1 ]
Kuang, YF [1 ]
Yao, SZ [1 ]
机构
[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Peoples R China
基金
中国国家自然科学基金;
关键词
platinum; Au nanoparticles; under-potential deposition (UPD); methanol oxidation;
D O I
10.1016/j.apcata.2004.07.018
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A platinum overlayer was prepared on An nanoparticles that were electrodeposited on a graphite electrode by replacement of the under-potential deposition (UPD) Cu monolayer. The micrographs and element composition of Au nanoparticles and UPD Cu monolayers were characterized by scanning electron microscopy (SEM) and energy disperse X-ray spectroscopy (EDS), respectively. The electrocatalytic properties of Pt overlayer/Au/graphite electrode for methanol oxidation have been investigated by cyclic voltammetry (CV). High electroactivity and good long-term stability can be observed. These results indicate that the core (Au nanoparticle)-shell (Pt overlayer) nanocatalyst obtained by the above method may have good potential applications in designing noble metal catalysts with super low loading and high activity at the atomic level in fuel cells. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:43 / 48
页数:6
相关论文
共 37 条
  • [11] Nanometer size platinum particle arrays: Catalytic and surface chemical properties
    Jacobs, PW
    Wind, SJ
    Ribeiro, FH
    Somorjai, GA
    [J]. SURFACE SCIENCE, 1997, 372 (1-3) : L249 - L253
  • [12] PLATINUM-TIN CATALYSTS FOR METHANOL FUEL-CELLS PREPARED BY A NOVEL IMMERSION TECHNIQUE, BY ELECTROCODEPOSITION AND BY ALLOYING
    JANSSEN, MMP
    MOOLHUYSEN, J
    [J]. ELECTROCHIMICA ACTA, 1976, 21 (11) : 861 - 868
  • [13] JING FN, ANAL LETT, V35
  • [14] Ordered nanoporous arrays of carbon supporting high dispersions of platinum nanoparticles
    Joo, SH
    Choi, SJ
    Oh, I
    Kwak, J
    Liu, Z
    Terasaki, O
    Ryoo, R
    [J]. NATURE, 2001, 412 (6843) : 169 - 172
  • [15] Coverage of the Cd underpotential deposited layer formed on an Au(111) substrate - Effect of the electrolytic conditions
    Kawamura, H
    Takahasi, M
    Mizuki, J
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (11) : C586 - C591
  • [16] KOLB DM, SCIENCE, V275
  • [17] Oxidation of methanol on 2nd and 3rd row Group VIII transition metals (Pt, Ir, Os, Pd, Rh, and Ru): Application to direct methanol fuel cells
    Kua, J
    Goddard, WA
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (47) : 10928 - 10941
  • [18] A VOLTAMMETRIC STUDY OF COPPER POISONING OF A PLATINIZED PLATINUM CATALYST
    LAMY, E
    BARBIER, J
    LAMY, C
    [J]. JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE, 1980, 77 (10) : 967 - 972
  • [19] PLATINUM CATALYSTS MODIFIED BY TIN
    LAMYPITARA, E
    ELOUAZZANIBENHIMA, L
    BARBIER, J
    CAHOREAU, M
    CAISSO, J
    [J]. APPLIED CATALYSIS A-GENERAL, 1992, 81 (01) : 47 - 65
  • [20] EFFECT OF LEAD ON THE ACTIVITY OF PLATINUM CATALYSTS
    LAMYPITARA, E
    LGHOUZOUANI, L
    PIKTAS, M
    BARBIER, J
    [J]. APPLIED CATALYSIS, 1988, 44 (1-2): : 261 - 267