Pt support of multidimensional active sites and radial channels formed by SnO2 flower-like crystals for methanol and ethanol oxidation

被引：81
作者：
Zhang, Hulin [1 ]
Hu, Chenguo [1 ]
He, Xiaoshan [1 ]
Hong, Liu [2 ]
Du, Guojun [2 ]
Zhang, Yan [1 ]
机构：
[1] Chongqing Univ, Dept Appl Phys, Chongqing 400044, Peoples R China
[2] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 10期
关键词：
Tin dioxide; Platinum catalyst; Electrooxidation; Methanol; Ethanol; FUEL-CELL; ELECTROCATALYTIC OXIDATION; CARBON PAPER; CATALYSTS; ELECTROOXIDATION; NANOPARTICLES; NANOWIRES; PTRU; CO; PT-SNO2;
D O I：
10.1016/j.jpowsour.2011.01.030
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：
SnO2 nanoflowers and nanorods have been synthesized by the hydrothermal method without using any capping agent. Both types of SnO2 nanostructures are selected as a support of Pt catalyst for methanol and ethanol electrooxidation. The synthesized SnO2 nanostructures and SnO2 supported platinum (Pt/SnO2) catalysts are characterized by X-ray diffraction, scanning electron microscope and high resolution transmission electron microscope. The electrocatalytic properties of the Pt/SnO2 and Pt/C catalysts for methanol and ethanol oxidation have been investigated systematically by typical electrochemical methods. The influence of SnO2 morphology on its electrocatalytic activity is comparatively investigated. The Pt/SnO2 flower-shaped catalyst shows higher electrocatalytic activity and better long-term cycle stability compared with other electrocatalysts owing to the multidimensional active sites and radial channels of liquid diffusion. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：4499 / 4505
页数：7
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