Electrochemical and microstructural characterization of platinum supported on glassy carbon

被引：0
|
作者：
Terzic, Sanja [1 ]
Jovanovic, Vladislava M. [1 ]
Tripkovic, Dusan [1 ]
Kowal, Andrzej [2 ]
Stoch, Jerzy [2 ]
机构：
[1] Ctr Electrochem, Inst Chem Technol & Met, Belgrade, Serbia
[2] Polish Acad Sci, Inst Catalysis & Surface Chem, Krakow, Poland
来源：
HEMIJSKA INDUSTRIJA | 2007年 / 61卷 / 03期
关键词：
electrochemical treatment; glassy carbon; AFM; STM; XPS;
D O I：
10.2298/HEMIND0703135T
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The effect of the electrochemical oxidation of glassy carbon on the deposition of platinum particles and the electrocatalytic activity of platinum supported on oxidized glassy carbon were studied for methanol oxidation in H(2)SO(4) solution. Platinum was potentiostatically deposited from H2SO4 + 6 mM H(2)PtCl(6) solution. Glassy carbon was anodically polarized in 1 M NaOH at 1.41 V (SCE) for 35 and 95 s and in 0.5 M H(2)SO(4) at 2 V (SCE) for 35; 95 s and 2.25 V for 35 and 95 s. Electrochemical treatment of the GC support leads to a better distribution of platinum on the substrate and has remarkable effect on the activity. The activity of the Pt/GCox electrode for methanol oxidation is larger than that of polycrystalline Pt and by more than one order of magnitude larger than that of a Pt/GC electrode. This increase in activity indicates the pronounced role of the organic residues of the GC support on the properties of Pt particles deposited on glassy carbon.
引用
收藏
页码：135 / 141
页数：7
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