中华医学超声杂志

应用化学 ›› 1998, Vol. 0 ›› Issue (4): 13-16.

• 研究论文 • 上一篇    下一篇

固体六氰合铁酸钴微粒在聚电解质中的现场显微红外光谱电化学

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开放研究实验室 长春;
    2. 中国科学技术大学化学系 合肥 230026
  • 收稿日期:1998-01-13 修回日期:1998-04-15 出版日期:1998-08-10 发布日期:1998-08-10
  • 基金资助:
    国家自然科学基金

In-situ Microscopic FTIR Spectroelectrochemical Study of Cobalt Hexacyanoferrate Microcrystallites in Polyelectrolyte

Guo Liping1, Lin Xiangqin2   

  1. 1. Laboratory of Electroanalytical Chemistry, Changchun institute Of APPliedChemistry, Chinese Academy of Sciences, Changchun;
    2. Department Of Chemistry, China University of Science and Technology, Hefei 230026
  • Received:1998-01-13 Revised:1998-04-15 Published:1998-08-10 Online:1998-08-10

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431

被引次数

2 | 2

摘要： 报道了六氰合铁酸钴(COHCF)微粒在聚电解质中的光谱电化学及电催化行为.CoHCF的循环伏安呈现一对可逆氧化还原峰,电位扫速在100mV/s范围内,峰电流与扫速成正比.现场红外光谱表明,氧化还原属于CoHCF中的Fe(Ⅱ/Ⅲ)的转化CoHCF微粒可以催化抗坏血酸的氧化,使氧化电位负移,氧化电流增大.根据现场红外光谱推测,催化作用是通过抗坏血酸的烯酸基与CoHCF相互作用实现的.

关键词: 六氰合铁酸钴, 聚乙二醇, 现场显微红外光谱电化学, 电催化

Abstract: Cobalt hexacyanoferrate (CoHCF) microcrystallites exhibited well--defined cyclicvoltammetric waves in polyethylene glycol.The peak current of COHCF was linear to thescanning speed at 100 mV/s and lower.In-situ IR spectra indicated that the redox involvedinterchange of ferric and ferrous states of the hexacyanoferrate.CoHCF catalyzed the oxidation of ascorbic acid with the oxidation peak poteneial shifting negatively to 183 mV.Acatalysis mechanism is proposed.

Key words: cobalt hexacyanoferrate, polyethylene glycol, in-situ microscopic infrared spectroelectrochemistry, electric catalysis

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