Effect of Particle Size on the Electrocatalytic Activity of Pt/C Catalysts for Oxidation of Formic Acid

被引:5
|
作者
Wang Yanen [1 ]
Cao Shuang [1 ]
Wu Weihong [1 ]
Wu Min [2 ]
Tang Yawen [2 ]
Lu Tianhong [2 ]
机构
[1] Hebei Agr Univ, Dept Morden Sci & Technol, Coll Sci, Baoding 071000, Peoples R China
[2] Nanjing Normal Univ, Sch Chem & Mat Sci, Nanjing 210097, Jiangsu, Peoples R China
来源
基金
中国国家自然科学基金;
关键词
Platinum catalyst; Formic acid oxidation; Effect of particle size; Electrocatalysis; SUPPORTED PD CATALYST; PLATINUM PARTICLES; FUEL-CELLS; METHANOL OXIDATION; CARBON; PERFORMANCE; ELECTROOXIDATION; ELECTROLYTE; MECHANISM;
D O I
10.7503/cjcu20140156
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In methanol solvent, using SnCl2 as reducing agent, carbon supported Pt(PVC) catalysts with different size of Pt particles were prepared. X-ray diffraction(XRD) and transmission electron microscopy(TEM) measurements demonstrated that in the obtained Pt/C catalysts, the Pt particles have great uniformity and good dispersion. The electrochemical experiments indicated that the effect of average particle size of Pt/C catalysts for formic acid oxidation is obvious. The Pt/C catalyst with 3. 2 nm average size of the Pt particles exhibited the optimal electrocatalytic performance for formic acid oxidation. This effect of particle size may be related to the quantity of the oxygen-containing species on the surface of the catalyst, the apparent surface area and the relative crystallinity of the platinum particles.
引用
收藏
页码:2455 / 2459
页数:5
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