摘要
天青Ｉ修饰电极在ｐＨ＝５．５的ＨＡｃ－ＮａＡｃ缓冲溶液中，在０．３～－０．７Ｖ电位范围内表现出可逆的氧化还原行为，其表面式量电位Ｅ０＇＝－０．２１Ｖ，表观电极反应速率常数ｋｓ＇＝０．６９ｓ￣（－１），该电极对血红蛋白的还原过程具有良好的催化作用。实验结果表明，由电沉积构成的修饰电极较吸附法制备的修饰电极具有更好的稳定性。
The CME modified by azure I,a new electron-transfer mediator,which was electrodeposited onto the surface of spectrographic graphite electrode ,shows significantly electrocatalytic activity to the reduction of hemoglobin,In the potential range from 0.3 V to-0.7V(vs. SCE),the mediator azure I behaves as one-electron reversible redox process involving two protons in acid solution and one proton in basic solution.In the medium of 0.2 mo1/L HAc-NaAc(pH=5.5).The formal potential E0'of the electrodeposited azure I is -0. 21 V and the apparent electron-transfer rate constant is 0. 69 s￣(-1).This CME shows a good stability.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第12期1847-1850,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
