高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (5): 802.

• 研究简报 • 上一篇    下一篇

聚合物电解质(PEG/LiClO4)中L-抗坏血酸氧化的现场显微红外光谱电化学研究

郭黎平1, 林祥钦2   

  1. 1. 中国科学院长春应用化学研究所电分析化学开放研究实验室, 长春, 130022;
    2. 中国科技大学应用化学系, 合肥, 230026
  • 收稿日期:1997-01-15 出版日期:1998-05-24 发布日期:1998-05-24
  • 通讯作者: 林祥钦
  • 作者简介:郭黎平,女,40岁,博士研究生.
  • 基金资助:

    国家自然科学基金

In Situ Microscopic FTIR Spectroelectrochemistry Study of Oxidation of L-Ascorbic Acid in Polymer Electrolyte(PEG/LiClO4)

GUO Li-Ping1, LIN Xiang-Qin2   

  1. 1. Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022;
    2. Department of Chemistry, University of Science of Technology of China, Hefei, 230026
  • Received:1997-01-15 Online:1998-05-24 Published:1998-05-24

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关键词: 聚合物电解质, 抗坏血酸, 现场显微红外光谱电化学, 脱氢抗坏血酸

Abstract: In situ microscopic FTIRspectroelectrochemistry behavior of L-ascorbic acid (H2A) in polymer electrolyte is reported for the first time. H2A undergoes a two-step oxidation. The oxidation waves shift towards more anodic potential values when the scan rate increases. The peak currents of the oxidation waves are proportional to the square roots of scan rate up to 100 mV/s. The in situ infrared spectra suggest that the product of the oxidation be dehydroascorbic acid, which may exist as a dimer.

Key words: Polymer electrolyte, Ascorbic acid, In situ microscopic FTIR, Dehydroascorbic acid

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