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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (9): 917-922. 上一篇    下一篇

研究论文

Fe, Co, Ni-聚合物-C复合催化剂的制备及对乙醇电催化氧化性能研究

齐 巍 周德璧* 陈素林 黄 玉 程 翔

  

  1. (中南大学化学化工学院 长沙 410083)
  • 投稿日期:2008-05-13 修回日期:2008-06-18 发布日期:2009-05-14
  • 通讯作者: 周德璧

Preparation and Electrocatalytic Properties of Fe, Co, Ni-Polymer-C Complex Catalysts for Ethanol Electro-oxidation

Qi, Wei Zhou, Debi* Chen, Sulin Huang, Yu Cheng, Xiang   

  1. (School of Chemistry and Chemical Engineering, Central South University, Changsha 410083)
  • Received:2008-05-13 Revised:2008-06-18 Published:2009-05-14
  • Contact: Zhou, Debi

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被引次数

4 | 2

采用模板聚合物与金属离子配位-碳粉负载-还原方法得到的纳米复合材料P-M-C (P为聚合物, M为Fe, Co, Ni金属纳米颗粒, C为碳粉XC72). 利用红外光谱(IR)对中间产物进行了表征, 结果表明所制物质为目标产物P; 透射电镜(TEM)结果表明Fe, Co, Ni纳米粒子粒径多数为20～30 nm, 部分在10 nm左右, 纳米粒子均匀地分散在聚合物P上; 扫描电镜的能谱(SEM-EDS)分析结果证实了Fe, Co, Ni三种元素的存在. 通过循环伏安和计时电流法研究表明, 碱性介质中P-M-C复合催化剂对乙醇电化学氧化具有高催化活性和稳定性; 反向高效液相色谱(HPLC)结果表明乙醇氧化后的产物部分为乙醛和乙酸的混合物.

关键词: 聚合物, 阳极电催化剂, 乙醇, 电化学

P-M-C complex materials were prepared by polymer template coordination with metal-ion loaded with a carbon-reduction method (P standing for polymer, M for nanometal Fe, Co and Ni particles, and C for carbon XC72). The interim production was characterized by IR to be the target polymer P; then the result of TEM indicated that the majority of the Fe, Co and Ni nanoparticles were between the size of 20 and 30 nm, part of which were at 10 nm, which were dispersed uniformly on polymer P. The existence of Fe, Co and Ni was approved by SEM-EDS. The electrocatalytic activity of the P-M-C electrode was investigated by cyclic voltammetry and chronopotentiography. The results showed that in alkaline medium the catalysts exhibited very high electrocatalytic activity and stability for the electro-oxidation of ethanol. HPLC result indicated that a part of the product after the oxidation of ethanol was a mixture of acetaldehyde and acetic acid.

Key words: polymer, anode electrocatalyst, ethanol, electrochemistry