化工学报 ›› 2008, Vol. 59 ›› Issue (S1): 1-5.

• 表面与界面工程 •    下一篇

硝基苯在碳化钨/碳纳米管粉末微电极上的电化学行为

王晓娟;马淳安;李国华   

  1. 浙江工业大学绿色化学合成技术国家重点实验室培育基地;化学工程与材料学院;纳米科学与技术研究中心
  • 出版日期:2008-06-30 发布日期:2008-06-30

Electrochemical behavior of nitrobenzene on
WC/carbon nanotube powder microelectrode

WANG Xiaojuan;MA Chun’an;LI Guohua   

  • Online:2008-06-30 Published:2008-06-30

摘要:

采用表面修饰和原位还原碳化技术制备了碳化钨(WC)/碳纳米管(CNT)纳米复合材料,并以其为电催化剂制成了WC/CNT纳米复合材料粉末微电极(WC/CNT-PME)。采用计时电流法、循环伏安法和原位红外反射光谱技术研究了酸性溶液中硝基苯在WC/CNT-PME上的电化学行为,讨论了扫描速率和温度对其电化学行为的影响。结果表明,WC/CNT纳米复合材料对硝基苯的电催化活性明显高于碳纳米管和纳米碳化钨;硝基苯在WC/CNT-PME上的还原反应是一受吸附控制的不可逆过程,其还原产物为对氨基苯酚。

关键词:

硝基苯, 碳化钨/碳纳米管, 纳米复合材料, 电化学行为

Abstract:

WC/carbon nanotube (CNT) nanocomposite was prepared by surface decoration and in situ reduction technique and subsequently was used as an electrocatalyst to prepare the WC/CNT powder microelectrode (WC/CNT-PMEElectrochemical reduction behavior of nitrobenzene on the WC/CNT-PME was investigated by chronoamperometry and cyclic voltammetry,combined with in situ FTIR,the influences of scan rate and temperature on the electroreduction behavior of nitrobenzene were discussed Results showed that WC/CNT nanocomposite showed better catalytic activity for the electroreduction of nitrobenzene than CNTs and WC nanoparticles, the electroreduction of nitrobenzene to p-aminophenol on the WC/CNT-PME was an irreversible process,which was controlled by adsorption.

Key words:

硝基苯, 碳化钨/碳纳米管, 纳米复合材料, 电化学行为