摘要
研究了影响铕 二茂铁衍生物配合物薄膜修饰电极伏安性质的各种因素 ,讨论了薄膜电极的电荷传递过程。在LiClO4 和甘氨酸底液中 ,在 0～ 0 8V(vs.SCE)电位范围内可观察到修饰电极的氧化还原峰 ,薄膜修饰电极在底液中是一种薄层扩散过程 ,用计时库仑法测得其表观扩散系数为 2 1× 1 0 - 10 cm2 ·s- 1。溶液平衡离子的水合半径大小、离子强度、溶剂对薄膜的溶胀性质以及薄膜的厚度是影响薄膜修饰电极伏安性质的主要因素。同时测定了电极反应的表观速率常数ks 为 6 7× 1 0 - 1s- 1。
Electrochemical behaviors of europium ferrocene derivative coordination complex chemically modified electrodes were studied. Various factors which affected the voltammetry of the thin film modified electrodes, and the charge transport process of the thin film electrode was discussed. Size of the hydrated anion(counter ion), concentration of the electrolyte, swelling property of the film in the solvent and thickness of the film have significant effects on the voltammetry of the thin film electrode. Electrochemical behaviors of europium ferrocene derivative coordination complex chemically modified electrode were studied in an aqueous solution. When scanning between 0～ 0 8 V (vs. SCE), experimental results indicate that the chemically modified electrode has good stability and reproducibility. The apparent rate constant of electrode reaction is determined to be 6 7×10 -1 ·s -1 .
出处
《中国稀土学报》
CAS
CSCD
北大核心
2000年第1期1-4,共4页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金! ( 2 98351 1 0 )
中科院长春应用化学研究所电分析化学开放研究实验室基金
关键词
铕
二藏铁衍生物
修饰电极
配生物
电化学
rare earths
europium
ferrocene derivative coordination
chemically modified electrode
thin film electrode
