物理化学学报 >> 1998, Vol. 14 >> Issue (06): 562-568.doi: 10.3866/PKU.WHXB19980616

研究简报 上一篇    下一篇

硫脲与多种阴离子共吸附行为的拉曼光谱研究

钟起玲, 王敦清, 刘峰名, 粟晓琼, 施财辉, 田中群   

  1. 江西师范大学化学系，南昌 330027|厦门大学固体表面物理化学国家重点实验室，物理化学研究所，化学系，厦门 361005
  • 收稿日期:1997-09-01 修回日期:1997-12-22 发布日期:1998-06-15
  • 通讯作者: 钟起玲

Raman Spectroscopic Studies on Coadsorption of Thiourea with Various Electrolyte Anions at Silver Electrodes

Zhong Qi-Ling, Wang Dun-Qing, Liu Feng-Ming, Su Xiao-Qiong, Shi Cai-Hui, Tian Zhong-Qun   

  1. Department of Chemistry,Jingxi Normal University,Nanchang 330027|State Key Laboratory of Physical Chemistry of Solid Surfaces,Institute of Physical Chemistry,Department of Chemistry,Xiamen University,Xiamen 361005
  • Received:1997-09-01 Revised:1997-12-22 Published:1998-06-15
  • Contact: Zhong Qi-Ling

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关键词: 拉曼光谱, 硫脲, 无机阴离子, 共吸附, 银电极

Abstract:

Surface enhanced Raman spectroscopy (SERS)has been used to study the electrochemical coadsorption of TU at silver electrodes in solutions containing nitric acid ,sulphuric acid and perchloric acid respectively or any two of them. It was found that these different anions can be induce-coadsorbed simultaneously on the silver surface through the protonated amino group of TU in the mixed acids system. The coadsorption ability of the anions are in the order of SO42->NO3->CLO4- at the potentials of ≥-0.6V or CLO4- >NO3-> SO42- at the potentials of ≤-0.8V. The stability of TU on the surface of Ag electrode depends not only on the electrode potential but also on the nature of electrolyte anions coadsopbed.

Key words: SERS, Thiourea, Electrolyte amion, Coadsorption, Silver electrodes