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Citation: CHEN Guo-Liang, SUN Shi-Gang, CHEN Sheng-Pei, ZHOU Zhi-You. In-situ FTIR Spectroscopic Study of Electrocatalytic Oxidation of CH₃CH₂OH on Sb Modified nm-Pt/GC Electrode[J]. Chinese Journal of Applied Chemistry, ;2001, 18(6): 432-435. shu

In-situ FTIR Spectroscopic Study of Electrocatalytic Oxidation of CH₃CH₂OH on Sb Modified nm-Pt/GC Electrode

1.
a Department of Chemistry, Zhangzhou Normal College, Zhangzhou;
2.
b State Key Laboratory of Physical Chemistry for Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005

Received Date: 7 August 2000
Available Online: 8 January 2001
Fund Project: 国家自然科学基金(29833060,29525307) (29833060,29525307)国家教育部研究基金(99177,1999038403)资助 (99177,1999038403)

The electrochemical behavior of irreversibly adsorbed antimony on nm-Pt/GC have been studied by cyclic voltammetry and in-situ FTIR spectrometry. The results showed that the adatoms of Sb were stable on the surface of nm-Pt/GC when the scanning potentials were below 0.50 V(SCE). In comparison with the unmodified nm-Pt/GC electrode, the Sb_ad/nm-Pt/GC electrode manifested significant increase in catalytic activity for oxidation of ethanol, and the maximum activity was found when the coverage of Sb_ad was 0.137. The oxidation peak potential in this case negatively shifted to about 150 mV with peak current being double increased.
- nano-Pt/GC,
- Sb adsorption,
- in-situ FTIRs,
- ethanol oxidation
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In-situ FTIR Spectroscopic Study of Electrocatalytic Oxidation of CH₃CH₂OH on Sb Modified nm-Pt/GC Electrode