摘要
报道了葡萄糖氧化酶(GOD)在电化学预处理的玻碳(GC)电极上的电化学行为。GC电极经过高电位阳极氧化,随后反复循环扫描的预处理,可使GOD的吸附能力大为提高,吸附GOD与该电极的直接电子传递近乎可逆。讨论了电化学预处理增强GOD吸附及直接电子传递的可能因素。
The direct electron transfer between adsorbed glucose oxidase (GOD) and electro chemically pretreated glassy carbon (GC) electrode was studied by cyclic voltammetry. The pretreat ment of GC electrode, which included anodization at +1. 8 V (vs. SCE) for 5 min and cycling thereafter between +0. 4 V and - 0. 8 V at 0. 1 V/s untill a steady voltammogram was obtained, greatly enhanced its ability to adsorb GOD. The direct electron transfer between adsorbed GOD and the GC electrode was quasi-reversible. The enhancement of the adsorption and the direct electron transfer by electrochemical pretreatment was discussed.
出处
《厦门大学学报(自然科学版)》
CAS
CSCD
北大核心
1990年第6期650-653,共4页
Journal of Xiamen University:Natural Science
基金
国家教委博士点专项研究基金
关键词
电化学预处理
GOD
直接电子传递
Electrochemical pretreatment, Glucose oxidase, Direct electron transfer, Glassy carbon electrode