| Pt-MoOx/CNT电极的制备及其对乙醇氧化电催化性能研究 |
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| 引用本文： | 王明涌,陈金华,崔坤在,刘博,周海晖,旷亚非.Pt-MoOx/CNT电极的制备及其对乙醇氧化电催化性能研究[J].中国化学,2006,24(7):881-886. |
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| 作者姓名： | 王明涌 陈金华 崔坤在 刘博 周海晖 旷亚非 |
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| 作者单位： | State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering，Hunan University，Changsha，Hunan 410082，China，State Key Laboratory of Chemo/Biosensing and Chemometrics，College of Chemistry and Chemical Engineering，Hunan University，Changsha，Hunan 410082，China，State Key Laboratory of Chemo/Biosensing and Chemometrics，College of Chemistry and Chemical Engineering，Hunan University，Changsha，Hunan 410082，China，State Key Laboratory of Chemo/Biosensing and Chemometrics，College of Chemistry and Chemical Engineering，Hunan University，Changsha，Hunan 410082，China，State Key Laboratory of Chemo/Biosensing and Chemometrics，College of Chemistry and Chemical Engineering，Hunan University，Changsha，Hunan 410082，China，State Key Laboratory of Chemo/Biosensing and Chemometrics，College of Chemistry and Chemical Engineering，Hunan University，Changsha，Hunan 410082，China |
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| 基金项目： | Project supported by the Program for New Century Excellent Talents in University （No. NCET-04-0765）, the Natural Science Foundation of China （No. 50172014） and the Scientific Research Foundation for the Returned 0verseas Chinese Scholars, the Ministry of Education of China （No. 2001-498）. |
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| 摘 要： | MoOx,a non-noble secondary catalyst instead of noble metal Ru,was dispersed on carbon nanotubes(CNT)andthen the primary catalyst Pt was electrodeposited on MoO_x/CNT/graphite electrode by potential-step method.CNTused was grown directly on graphite disk by chemical vapor deposition.The Pt-MoO_x/CNT/graphite electrode wascharacterized by scanning electron microscopy and energy dispersive X-ray spectroscopy.The electrocatalyticproperty and the long-term cyclic stability of Pt-MoO_x/CNT/graphite electrode for ethanol oxidation have been in-vestigated in 1.0 mol/L CH_3CH_2OH 0.1 mol/L H_2SO_4 by cyclic voltammetry.On the other hand,the effect of theloading mass of MoO_x on specific activity of Pt-MoO_x/CNT/graphite electrode and the activation energy of ethanoloxidation were investigated.The Pt-MoO_x/CNT/graphite electrode shows good long-term cyclic stability.82%value of peak current density at the oxidation peak around 0.69 V(vs.SCE)remains after 500 cycles,which ishigher than those of Pt/CNT/graphite and Pt-Ru/CNT/graphite electrodes with the corresponding values of 55% and72%,respectively.
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| 关 键 词： | 乙醇氧化 碳纳米棒 氧化钼 铂 电催化性质 Pt-MoOx/CNT电极 |
| 收稿时间： | 2005-07-12 |
| 修稿时间： | 2005-07-122006-03-08 |
Preparation of Pt-MoOx/CNT Electrode and Its Electrocatalytic Property for Ethanol Electrooxidation |
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| WANG, Ming-Yong CHEN, Jin-Hua CUI, Kun-Zai LIU, Bo ZHOU, Hai-Hui KUANG, Ya-Fei.Preparation of Pt-MoOx/CNT Electrode and Its Electrocatalytic Property for Ethanol Electrooxidation[J].Chinese Journal of Chemistry,2006,24(7):881-886. |
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| Authors: | WANG Ming-Yong CHEN Jin-Hua CUI Kun-Zai LIU Bo ZHOU Hai-Hui KUANG Ya-Fei |
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| Institution: | State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China |
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| Abstract: | MoOx,a non-noble secondary catalyst instead of noble metal Ru,was dispersed on carbon nanotubes(CNT)and then the primary catalyst Pt was electrodeposited on MoO_x/CNT/graphite electrode by potential-step method.CNT used was grown directly on graphite disk by chemical vapor deposition.The Pt-MoO_x/CNT/graphite electrode was characterized by scanning electron microscopy and energy dispersive X-ray spectroscopy.The electrocatalytic property and the long-term cyclic stability of Pt-MoO_x/CNT/graphite electrode for ethanol oxidation have been in- vestigated in 1.0 mol/L CH_3CH_2OH 0.1 mol/L H_2SO_4 by cyclic voltammetry.On the other hand,the effect of the loading mass of MoO_x on specific activity of Pt-MoO_x/CNT/graphite electrode and the activation energy of ethanol oxidation were investigated.The Pt-MoO_x/CNT/graphite electrode shows good long-term cyclic stability.82% value of peak current density at the oxidation peak around 0.69 V(vs.SCE)remains after 500 cycles,which is higher than those of Pt/CNT/graphite and Pt-Ru/CNT/graphite electrodes with the corresponding values of 55% and 72%,respectively. |
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| Keywords: | ethanol oxidation carbon nanotube molybdenum oxide platinum |
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