中华医学超声杂志

应用化学 ›› 1989, Vol. 0 ›› Issue (2): 92-94.

• 研究简报 • 上一篇    下一篇

薄层光谱电化学方法研究[Ag(lO6)2]7-和[Cu(lO6)2]7-的阴极还原

李海英, 郁章玉, 顾登平   

  1. 河北师范大学化学系 石家庄
  • 收稿日期:1988-04-25 修回日期:1988-08-16 出版日期:1989-04-10 发布日期:1989-04-10
  • 基金资助:
    国家自然科学基金

STUDY ON THE ELECTROREDUCTION OF [Ag(IO6)2]7- AND [Cu(IO6)2]7- BY THIN LAYER SPECTROELECTROCHEMICAL METHOD

Li Haiying, Yu Zhangyu, Gu Dengping   

  1. Department of Chemistry, Hebei Normal University, Shijiazhuang
  • Received:1988-04-25 Revised:1988-08-16 Published:1989-04-10 Online:1989-04-10

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摘要： 在碱性介质中只有少数氧化剂如Ag(Ⅲ)及Cu(Ⅲ)仍有较强的氧化性,因此研究Ag(Ⅲ)、Cu(Ⅲ)络合物阴极还原的电极电势、电子转移数及还原机理,对于深入了解它们作为氧化剂时的氧化还原特性是有帮助的.本文用薄层光谱电化学方法测定了二过碘酸合银(Ⅲ)、络离子在不同pH条件下还原反应的E0′和电子转移数(n),并由此推断阴极还原反应机理,还用同样方法研究了二过碘酸含铜(Ⅲ)络离子的阴极还原.

关键词: 薄层光谱电化学, 银(Ⅱ)络离子, 铜(Ⅲ)络离子

Abstract: The reduction of [Ag(IO6 )2]7- at an Au minigrid electrode was studied by using thinlayer spectroelectrochemical method.The reaction was found to proceed in two steps,namely:Ag(Ⅲ) →Ag(Ⅰ) and Ag(Ⅰ) →Ag(0). From the measured formal redox potential E0' atvarious pH a linear equation was obtained: E0' = 1.611 - 0.086pH (V vs SCE). The reduc-tion of copper complex was studied in the same way.

Key words: Thin layer spectroelectrochemistry, Complex ion of silver (Ⅲ), Complex ion of copper (Ⅲ)

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