Electrochemical surface modification on CuPdAu/C with extraordinary behavior toward formic acid/formate oxidation

被引：24

作者：

Mao, Han ^{[1
]}

Huang, Tao ^{[1
]}

Yu, Aishui ^{[1
]}

机构：

[1] Fudan Univ, Collaborat Innovat Ctr Chem Energy Mat, Inst New Energy, Dept Chem,Shanghai Key Lab Mol Catalysis & Innova, Shanghai 200438, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 30期

关键词：

Formic acid/formate oxidation; Chronoamperometric treatment; Electrochemical Cu removal; Surface oxides modification; ACID ELECTROOXIDATION; FUEL-CELLS; CATALYST; FORMATE; METHANOL; ETHANOL;

D O I：

10.1016/j.ijhydene.2016.05.224

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：

In this article we innovatively propose a new surface modification strategy which applies a chronoamperometry on CuPdAu/C to get the surface copper removed CuAuPd/C (SCR-CuAuPd/C). Moreover, the chronoamperometric process can also modify the surface constitution with oxides such as PdO2 and Au2O3. The removal of surface Cu will diminish the drawbacks brought by the instability of surface Cu in alkaline media, and the oxides like PdO2 will help oxidize COad and thus reduce catalyst poisoning. The electrochemical measurements confirm the positive effect of chronoamperometric treatment, the SCR-CuPdAu/C achieve objective progress after chronoamperometric treatment, with highest activity and anti-poisoning properties toward formic acid/formate oxidation in both acidic and alkaline media. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：13190 / 13196

页数：7

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