华东师范大学学报(自然科学版) ›› 2006, Vol. 2006 ›› Issue (4): 49-55.

• 化学 • 上一篇    下一篇

对硝基苯甲醚在Cu电极上的电化学还原行为研究

薛 腾, 王 欢, 罗仪文, 张 丽, 柳英姿, 陆嘉星   

  1. 华东师范大学 化学系，上海市绿色化学与化工过程绿色化重点实验室，上海 200062
  • 收稿日期:2005-09-21 修回日期:2006-04-19 出版日期:2006-07-25 发布日期:2006-07-25
  • 通讯作者: 陆嘉星

Electrochemical Reduction Behavior of p-Nitroanisole on Copper Electrode(Chinese)

XUE Teng, WANG Huan, LUO Yi-wen, ZHANG Li, LIU Ying-zi, LU Jia-xing   

  1. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry,East China Normal University, Shanghai 200062, China
  • Received:2005-09-21 Revised:2006-04-19 Online:2006-07-25 Published:2006-07-25
  • Contact: LU Jia-xing

摘要： 以Cu盘做工作电极，Pt丝做辅助电极，饱和甘汞电极做参比电极，采用循环伏安法和计时电量法等测试手段研究了对硝基苯甲醚在含0.5 mol/L硫酸的甲醇水（体积比3∶2）溶液中的电化学行为，讨论了扫描速度、底物浓度以及温度对对硝基苯甲醚电化学行为的影响.研究证明：对硝基苯甲醚在Cu电极上的电化学还原是受扩散控制的不可逆过程，根据不同扫描速度下循环伏安曲线的峰电流值求得其传递系数α为0.26，计时电量法求得其扩散系数为1.03×10-5cm2/s.

关键词: 对硝基苯甲醚, 循环伏安法, 计时电量法, 传递系数, 扩散系数, 对硝基苯甲醚, 循环伏安法, 计时电量法, 传递系数, 扩散系数

Abstract: The electrochemical behavior of p-Nitroanisole on copper electrode in methanol-H2O solution was investigated by cyclic voltammetry and chronocoulometry. The influences of scan rate, concentration and temperature on the electrochemical behavior were discussed. It was showed that the reduction of p-nitroanisole on copper electrode was a diffusion-controlled irreversible process. The diffusion coefficient D of pNitroanisole in methanol-H2O solution was 1.03×10-5cm2/s, while the transfer coefficient was 0.26.

Key words: cyclic voltammetry, chronocoulometry, transfer coefficient, diffusion coefficient, p-Nitroanisole, cyclic voltammetry, chronocoulometry, transfer coefficient, diffusion coefficient

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