Controlled synthesis of Pt-Sn/C fuel cell catalysts with exclusive Sn-Pt interaction Application in CO and ethanol electrooxidation reactions

被引：73

作者：

Garcia-Rodriguez, Sergio ^{[1
]}

Somodi, Ferenc ^{[2
]}

Borbath, Irina ^{[2
]}

Margitfalvi, Jozsef L. ^{[2
]}

Antonio Pena, Miguel ^{[1
]}

Fierro, Jose Luis G. ^{[1
]}

Rojas, Sergio ^{[1
]}

机构：

[1] CSIC, Inst Catalisis & Petroleoquim, Madrid 28049, Spain

[2] HAS, Chem Res Ctr, Inst Nanochem & Catalysis, H-1525 Budapest, Hungary

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2009年 / 91卷 / 1-2期

关键词：

PtSn/C electrocatalysts; Controlled surface reactions; Pt3Sn; Sn-Pt interaction; Ethanol; Electrooxidation; SN-PT/SIO2; CATALYSTS; METHANOL OXIDATION; ANODIC-OXIDATION; H-2/CO MIXTURES; RECENT PROGRESS; CARBON; ELECTROCATALYSTS; NANOPARTICLES; ADSORPTION; REDUCTION;

D O I：

10.1016/j.apcatb.2009.05.009

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 series of Sn modified carbon supported Pt electrocatalysts displaying an increasing amount of the Pt3Sn crystalline phase within their structure has been prepared by using controlled surface reactions (CSRs). This synthetic route results in the exclusive incorporation of Sn onto the Pt sites yielding Pt(1-x)Snx and Pt3Sn phases. As demonstrated by X-ray diffraction and transmission electron microscopy the amount of the Pt3Sn phase within the electrocatalysts can be controlled by tuning the reaction conditions in CSRs. CO and ethanol electrooxidation reactions were studied over these new type of Sn-Pt/C catalysts, demonstrating that the presence of the Pt3Sn structure effectively facilitates both processes, particularly the ethanol electrooxidation. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：83 / 91

页数：9

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