高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (11): 1819.

• 研究论文 • 上一篇    下一篇

应用玻璃微米/纳米管和循环伏安法研究邻菲咯啉加速质子在水/1,2-二氯乙烷界面的转移过程

袁艺, 苏彬, 邵元华   

  1. 中国科学院长春应用化学研究所电分析化学国家重点实验室国家电化学和光谱分析研究中心, 长春 130022
  • 收稿日期:2000-12-19 出版日期:2001-11-24 发布日期:2001-11-24
  • 通讯作者: 邵元华(1962年出生),男,博士,研究员,博士生导师,主要从事应用各种电化学方法研究电荷在液液界面的转移反应过程以及生物电化学和电分析化学研究.
  • 基金资助:

    国家杰出青年基金(批准号:29825111);中国科学院“百人计划”基金;中国科学院电分析化学国家重点实验室基金资助

Investigation of Proton Transfer Across the Water/1,2-Dichloroethane Interface by o-Phenanthroline Using Glass Micro/Nano-pipets and Cyclic Voltammetry

YUAN Yi, SU Bin, SHAO Yuan-Hua   

  1. State Key Laboratory of Electroanalytical Chemistry, National Analytical and Research Centerof Electrochemistryand Spectroscopy, Changchun Instituteof Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2000-12-19 Online:2001-11-24 Published:2001-11-24

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被引次数

16

摘要： 利用循环伏安法研究了玻璃微米/纳米管支持的水/1,2-二氯乙烷(DCE)界面上邻菲咯啉加速质子的转移过程.将装有水溶液的微米/纳米管插入到DCE溶液中,可以形成微米/纳米级-液/液界面,在选定的实验条件下,其作用类似于微米/纳米电极.用微米管考察了此加速转移过程的半波电位与pH值(1.1～7.5)的关系,利用Matsuda等提出的理论公式计算了邻菲咯啉与质子在有机相和水相中的络合常数比.并用纳米管计算得到邻菲咯啉加速质子在水/DCE界面转移过程中的标准速率常数(k0)和转移系数(α)分别为(0.183±0.054)cm/s和0.70±0.0.

关键词: 玻璃微米/纳米管, 液/液界面, 邻菲咯啉, 加速质子转移

Abstract: Facilitated proton transfer across the water/1,2 dichloroethane(DCE) interface supported on the tips of micro and nano pipets by o phenanthroline(Phen) was studied by using cyclic voltammetry. The formed micro and nano liquid/liquid interfaces functioned as micro and nano electrodes under certain experimental conditions. The dependence of the half wave potentials on the aqueous solutions acidities was studied and the ratio of association constants between Phen and proton in the aqueous and DCEphases was calculated by the method proposed by Matsuda et al.. The standard rate constant(k0) and the transfer coefficient(α) evaluated by using nano pipets were equal to 0183±0054 cm/s and 070±009, respectively.

Key words: Glass micro and nano pipets, Liquid/liquid interface, o Phenanthroline, Facilitated proton transfer

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