物理化学学报 >> 2011, Vol. 27 >> Issue (01): 91-96.doi: 10.3866/PKU.WHXB20110128

电化学和新能源 上一篇    下一篇

氮掺杂无定形碳负载Pd催化剂对甲醇的电催化氧化

赵彦春, 占璐, 田建袅, 聂素连, 宁珍   

  1. 广西师范大学化学化工学院, 药用资源化学与药物分子工程教育部重点实验室, 广西桂林541004
  • 收稿日期:2010-06-03 修回日期:2010-10-19 发布日期:2010-12-31
  • 通讯作者: 赵彦春 E-mail:yanchunzh@yahoo.cn
  • 基金资助:

    广西自然科学基金创新团队项目(2010GXNSFF013001, 0728043)和广西教育厅科研项目(桂教科研[2006]26 号)资助

N-Doped Amorphous Carbon Supported Pd Catalysts for Methanol Electrocatalytic Oxidation

ZHAO Yan-Chun, ZHAN Lu, TIAN Jian-Niao, NIE Su-Lian, NING Zhen   

  1. Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Education of China, College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, Guangxi Province, P. R. China
  • Received:2010-06-03 Revised:2010-10-19 Published:2010-12-31
  • Contact: ZHAO Yan-Chun E-mail:yanchunzh@yahoo.cn
  • Supported by:

    The project was supported by the Guangxi Natural Science Foundation, China (2010GXNSFF013001, 0728043) and Guangxi Ministry of Education Foundation, China ([2006]26).

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摘要：

采用800 ℃高温煅烧聚邻甲基苯胺(POT)的方法制备了含氮的新型无定形碳(CxN) 载体, 其氮含量约为8.5%(w). 氮元素的存在使载体具有极性, 显著提高载体的化学活性, 有利于钯纳米粒子在载体表面的沉积和分散, 使CxN负载钯纳米粒子催化剂(Pd/CxN)具有较大的电化学活性表面积, 在碱性介质中对甲醇氧化具有很高的催化活性和稳定性, 表明CxN在直接甲醇燃料电池研究中是一类很有潜力的催化剂载体.

关键词: 碱性直接甲醇燃料电池, 聚邻甲基苯胺, 煅烧, 氮掺杂无定形碳, 钯纳米粒子

Abstract:

We prepared a new kind of N-doped amorphous carbon (CxN) by the calcination of poly-o-toluidine (POT) at 800 °C. The prepared CxN consisted of about 8.5% (w) nitrogen. Pd nanoparticles were deposited on CxN because of the inherent chemical activity arising from nitrogen incorporation. The Pd/CxN composite catalyst has a large electrochemically active surface area and it shows good electrocatalytic performance and stability toward methanol oxidation in alkaline media. All the results suggest that CxN can potentially find application in fuel cells.

Key words: Alkaline direct methanol fuel cell, Poly-o-toluidine, Calcination, N-doped amporphous carbon, Pd nanoparticle