Electrocatalytic oxidation of methanol on mono and bimetallic composite films: Pt and Pt-M (M = Ru, Ir and Sn) nanoparticles in poly(o-aminophenol)

被引：103

作者：

Habibi, B. ^{[1
]}

Pournaghi-Azar, M. H. ^{[2
]}

Abdolmohammad-Zadeh, H. ^{[1
]}

Razmi, H. ^{[1
]}

机构：

[1] Azarbaijan Univ Tarbiat Moallem, Dept Chem, Fac Sci, Electroanalyt Chem Lab, Tabriz, Iran

[2] Univ Tabriz, Fac Chem, Electroanalyt Chem Lab, Tabriz, Iran

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 07期

关键词：

Pretreated aluminum electrode; Poly(o-aminophenol); Pt based composite electrode; Methanol electrooxidation; HIGHLY DISPERSED ELECTRODES; MODIFIED PLATINUM-ELECTRODE; GLASSY-CARBON ELECTRODES; PALLADIZED ALUMINUM; CONDUCTING POLYMERS; OXYGEN REDUCTION; CATALYTIC-ACTIVITY; POLYPYRROLE FILMS; ANODE CATALYST; C1; MOLECULES;

D O I：

10.1016/j.ijhydene.2009.01.072

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：

Mono and bimetallic composite catalysts have been formed by a three-step process, whereby the surface of aluminum electrode was pretreated upon immersion into a Pd(NH(3))(4)Cl(2) solution (p-Al), was subsequently coated with a thin poly(o-aminophenol) (PoAP) layer by potentiodynamic electropolymerization. of o-aminophenol and Pt and Pt alloys nano-particles were finally dispersed into the PoAP film by electrochemical methods. The electrocatalytic properties of the platinum doped (Pt/PoAP/p-Al) and Pt alloys doped (Pt-M/PoAP/p-Al, M = Ru, Ir and Sn) electrodes towards the methanol oxidation were investigated by cyclic voltammetry and compared with the electrocatalytic properties of pristine Pt and Pt particles on pretreated Al (Pt/p-Al) electrodes. The enhancement of the electrocatalytic activity of the Pt nano-particles, when Ru, Ir and Sn, are co-deposited in the polymer is also studied in detail. The effects of various parameters on the electrooxidation of methanol as well as the long-term stability of doped electrodes have also been investigated. Published by Elsevier Ltd on behalf of International Association for Hydrogen Energy

引用

页码：2880 / 2892

页数：13

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