Study of core-shell platinum-based catalyst for methanol and ethylene glycol oxidation

被引：35
|
作者：
Kaplan, D. [1 ]
Alon, M. [1 ]
Burstein, L. [2 ]
Rosenberg, Yu [2 ]
Peled, E. [1 ]
机构：
[1] Tel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel
[2] Tel Aviv Univ, Wolfson Appl Mat Res Ctr, IL-69978 Tel Aviv, Israel
来源：
JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 03期
关键词：
Core-shell; Platinum; Catalyst; Methanol; Ethylene glycol; Oxidation; ELECTROOXIDATION; PERFORMANCE; REDUCTION; DMFC; RU;
D O I：
10.1016/j.jpowsour.2010.08.022
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 RUcore-Pt-shell, XC72-supported catalyst was synthesized in a two-step process: first, by deposition of Ru on XC72 by the polyol process and then by deposition of Pt on the XC72-supported Ru, with NaBH4 as reducing agent. The structure and composition of this core-shell catalyst were determined by EDS, XPS, TEM and XRD. Electrochemical characterization was determined with the use of cyclic voltammetry and chronoamperometry. The methanol and ethylene glycol oxidation activities of the core-shell catalyst were studied at 80 degrees C and compared to those of a commercial catalyst. It was found to be significantly better (in terms of Ag-1 of Pt) in the case of methoanol oxidation and worse in the case of ethylene glycol oxidation. Possible reasons for the lower ethylene glycol oxidation activity of the core-shell catalyst are discussed. (C) 2010 Elsevier B.V. All rights reserved.
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页码：1078 / 1083
页数：6
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