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Preparation of Pt-MoOx/CNT Electrode and Its Electrocatalytic Property for Ethanol Electrooxidation
  • ISSN号:1001-604X
  • 期刊名称:《中国化学:英文版》
  • 时间:0
  • 分类:O623.411[理学—有机化学;理学—化学] O646[理学—物理化学;理学—化学]
  • 作者机构:[1]State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
  • 相关基金: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).
中文摘要:

MoOx,非高贵的第二等的催化剂而不是高贵金属 Ru,在碳 nanotubes (CNT ) 上被驱散然后主要催化剂磅是由潜在步的方法的 MoOx/CNT/graphite 电极上的 electrodeposited。使用的 CNT 被化学蒸汽免职在石墨磁盘上直接种。Pt-MoOx/CNT/graphite 电极被扫描电子显微镜学和精力描绘散 X 光检查光谱学。electrocatalytic 性质和为乙醇氧化的 Pt-MoOx/CNT/graphite 电极的长期的周期的稳定性被周期的 voltammetry 在 1.0 mol/L CH3CH2OH+0.1 mol/L H2SO4 调查了。在另一方面,在 Pt-MoOx/CNT/graphite 电极的特定的活动和乙醇氧化的激活精力的 MoOx 的装载的团的效果被调查。Pt-MoOx/CNT/graphite 电极显示出好长期的周期的稳定性。在在 0.69 V 附近的氧化山峰的山峰电流密度的 82% 价值(对 SCE ) 在 500 个周期以后留下,它分别地比有 55% 和 72% 的相应价值的 Pt/CNT/graphite 和 Pt-Ru/CNT/graphite 电极的那些高。

英文摘要:

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 MoOx/CNT/graphite electrode by potential-step method. CNT used was grown directly on graphite disk by chemical vapor deposition. The Pt-MoOx/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-MoOx/CNT/graphite electrode for ethanol oxidation have been investigated in 1.0 mol/L CH3CH2OH+0.1 mol/L H2SO4 by cyclic voltammetry. On the other hand, the effect of the loading mass of MoOx on specific activity of Pt-MoOx/CNT/graphite electrode and the activation energy of ethanol oxidation were investigated. The Pt-MoOx/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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期刊信息
  • 《中国化学:英文版》
  • 主管单位:
  • 主办单位:中国化学会
  • 主编:
  • 地址:上海市枫林路354号中科院上海有机化学研究所
  • 邮编:200032
  • 邮箱:
  • 电话:021-54925243
  • 国际标准刊号:ISSN:1001-604X
  • 国内统一刊号:ISSN:31-1547/O6
  • 邮发代号:4-646
  • 获奖情况:
  • 中国期刊方阵“双高”期刊
  • 国内外数据库收录:
  • 美国化学文摘(网络版),荷兰文摘与引文数据库,美国科学引文索引(扩展库),日本日本科学技术振兴机构数据库,英国英国皇家化学学会文摘
  • 被引量:175