欢迎访问《电化学(中英文)》期刊官方网站,今天是

电化学(中英文) ›› 1995, Vol. 1 ›› Issue (1): 38-43. 

• 研究论文 • 上一篇    下一篇

离子注入钯的钛电极上硝基苯的电化学还原

吴仲达,朱先军,王红森   

  1. 北京师范大学化学系
  • 收稿日期:1995-02-28 修回日期:1995-02-28 出版日期:1995-02-28 发布日期:1995-02-28

Electroreduction of the Nittobenzene on Titanium Electrode Implanted with Palladium

Wu Zhongda; Zhu Xianjun; Wang Hongsen   

  1. (Department of Chemistry, Beijing Normal University, Beijing 100875
  • Received:1995-02-28 Revised:1995-02-28 Published:1995-02-28 Online:1995-02-28

摘要: 在室温下将1×10 ̄(17)~5×10 ̄(17)Pd ̄+·cm ̄(-2)离子注入到钛基体中.通过AES测量了注入电极表面的组成和各元素的浓度-深度分布.用循环伏安法研究硝基苯在碱性溶液中,Pd/Ti电极上的电化学过程,结果表明,注钯的钛电极对硝基苯的电化学还原显示高的催化活性.用现场ESR与电化学方法联用检测到硝基苯的单电子还原产物硝基苯阴离子自由基,用现场UV光谱法也检测到硝基苯的电还原产物苯胺.根据实验结果讨论了硝基苯电化学还原的机理.

关键词: 离子注入, 电化学还原, 硝基苯, 钛电极,

Abstract: The titanium substrates were bombarded with 1×10 ̄(17)~5×10 ̄(17)ions·cm ̄(-2) ofpalladium at the room temperature. The surface composition of implanted electrede and concentration-depth profiles of various elements were measured by AES. The electrored uction processes ofnitrobenzene(NB)in 0.1 mol/L NaOH solution at Pd/Ti electrodes have been investigated by cyclicvoltaivimetry.The results show that the palladium implanted titanium electrodes exhibit a high catalyticactivity in the electroreduction of NB. The NB radical anion,which is the product of one-electronelectroreduction of NB,was detected by ESR in-situ in conjunction with electrochemical methods. Aniline was also detected as a product of electroreduction of NB by using UV-spectra in-situ. According to the experimental results,the electroreduction mechanisms of NB are discussed.

Key words: Ion implantation, Electroreduction, Nitrobenzene, Titanium electrode, Palladium

中图分类号: