期刊
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY
卷 16, 期 1, 页码 61-65出版社
JOURNAL OF CENTRAL SOUTH UNIV
DOI: 10.1007/s11771-009-0010-x
关键词
K3Fe(CN)(6); electrochemical behavior; W/O microemulsion; electrical conductivity
资金
- National Natural Science Foundation of China [20673036, J0830415]
- Science Technology Project of Hunan Province, China [05JT1026, 2007JT2013]
A water-in-oil (W/O) microemulsion composed of Triton X-100, n-hexanol, n-hexane and water solution with hydrochloric acid was prepared. K3Fe(CN)(6) was added in as a water-soluble electroactive probe, and its electrochemical behavior was investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). It is found that the H+ concentration of the water phase has a great effect on the conductivity of the W/O microemulsion, and hence influences the electrochemical behavior of K3Fe(CN)(6). When the pH value of water phase is about 7, the electrical conductivity of the W/O microemulsion is only 1.2x10(-6) S/cm, and K3Fe(CN)(6) almost cannot react at the glassy carbon electrode. But when the H+ concentration is more than 3 mol/L, the W/O microemulsion has a good electrical conductivity and K3Fe(CN)(6) shows good electrochemical performance in it. The results of CV and EIS studies indicate that the electrochemical behavior of Fe(CN)(6)(3-)/Fe(CN)(6)(4-) in the W/O microemulsion is different from that in the aqueous solution. This may be due to the unique liquid structure of the W/O microemulsion and the unique mass transfer in the W/O microemulsion.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据