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

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (11): 1819.

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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

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

Abstract

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

CLC Number:

O646

TrendMD:

YUAN Yi, SU Bin, SHAO Yuan-Hua . Investigation of Proton Transfer Across the Water/1,2-Dichloroethane Interface by o-Phenanthroline Using Glass Micro/Nano-pipets and Cyclic Voltammetry[J]. Chem. J. Chinese Universities, 2001, 22(11): 1819.

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

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