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Journal of Electrochemistry ›› 2019, Vol. 25 ›› Issue (6): 731-739.doi: 10.13208/j.electrochem.190709

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Transient Electrochemical Surface-Enhanced Raman Spectroscopic Study in Electrochemical Reduction of P-Nitrothiophenol

LING Yun1,2*, TANG Jing2*, LIU Guo-kun3, ZONG Cheng4   

  1. 1. Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, Fujian Provincial Key Laboratory of Pollution Monitoring and Control, College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou, 363000, Fujian, China; 2. Key laboratory for analytical science of food safety and biology, Ministry of Education, College of Chemistry, Fuzhou University, Fuzhou 350116, Fujian, China; 3. State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen 361102, Fujian, China; 4. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry,College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
  • Received:2019-07-09 Revised:2019-09-18 Online:2019-12-28 Published:2019-11-06
  • Contact: LING Yun, TANG Jing E-mail:lingyun@mnnu.edu.cn;jingtang@fzu.edu.cn

Abstract: P-nitrothiophenol (PNTP) is one of the most common probe molecules studied by surface-enhanced Raman spectroscopy (SERS). The research in electrochemical reduction behavior of PNTP will help understanding the mechanism for the nitrobenzene reduction. In this paper, we used transient electrochemical surface-enhanced Raman spectroscopy (TEC-SERS) to study the SERS of PNTP with cyclic voltammetry and chronoamperometry on gold electrodes. The results show that the TEC-SERS provide a time resolution that equals the transient electrochemical methods, and we concluded that the reaction was so quick that we did not observe the spectral information of intermediate species described in the literatures with a 5-ms temporal resolution. Such studies will assist a deep understanding in the electrochemical reduction of nitrobenzene.

Key words: transient electrochemical surface-enhanced Raman spectroscopy, time-resolved electrochemical surface-enhanced Raman spectroscopy, cyclic voltammetry, chronoamperometry, p-nitrothiophenol

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