离子液体和KGM修饰电极上的直接电化学

杨柳; 吴霞琴; 后雯璟; 顾林飞; 王荣; 郭晓明; 章宗穰

doi:10.61558/2993-074X.1911

电化学 >

2008 , Vol. 14 >Issue 3: 304 - 307

DOI: https://doi.org/10.61558/2993-074X.1911

研究论文

离子液体和KGM修饰电极上的直接电化学

杨柳 ,
吴霞琴 ,
后雯璟 ,
顾林飞 ,
王荣 ,
郭晓明 ,
章宗穰

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上海师范大学生命与环境科学学院化学系;上海应用技术学院化工系;

收稿日期: 2008-08-28

修回日期: 2008-08-28

网络出版日期: 2008-08-28

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Direct Electrochemistry of Hemoglobin Immobilized on the Electrode Modified with Ionic Liquid and KGM

YANG Liu ,
WU Xia-qin ,
HOU Wen-jing ,
GU Lin-fei ,
WANG Rong ,
GUO Xiao-ming ,
ZHANG Zong-rang

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(1.Department of Chemistry,Shanghai Normal University,Shanghai 200234,China;2.Dept.of Chemistry and Engineering,Shanghai Institute of Technology,Shanghai 200235,China

Received date: 2008-08-28

Revised date: 2008-08-28

Online published: 2008-08-28

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摘要

将血红蛋白固定在用室温离子液体和魔芋葡甘聚糖(KGM)水凝胶修饰的玻碳电极上,其循环伏安扫描显示一对可逆的氧化还原电流峰,克式量电位(-0.38V,vs.SCE)随溶液pH值的增大而负移,呈良好的线性关系,斜率为51 mV/pH,表明在离子液体和KGM共同修饰的电极上包埋在魔芋葡甘聚糖水凝胶中的血红蛋白发生了直接可逆的电子传递反应,并伴随有一质子的迁移过程.此外,还考察了该血红蛋白修饰电极对O2还原反应的电催化性能.

关键词： 离子液体; 魔芋葡甘聚糖; 血红蛋白; 直接电化学; 电催化

本文引用格式

杨柳 , 吴霞琴 , 后雯璟 , 顾林飞 , 王荣 , 郭晓明 , 章宗穰 . 离子液体和KGM修饰电极上的直接电化学[J]. 电化学, 2008 , 14(3) : 304 -307 . DOI: 10.61558/2993-074X.1911

Abstract

Hemoglobin(Hb) has been immobilized on a glassy carbon electrode(GCE) surface with konjac glucomannan(KGM) and room temperature ionic liquid(RTIL).And which electrochemical behaviors have been investigated by cyclic voltammetry.The results shown that the entrapped Hemoglobin undergoes fast direct electron transfer reactions with formal potential of-0.38V(vs.SCE) and the E0' is linearly dependent on solution pH with a slope value of 51 mV/pH,due to the electron transfer of HbFe3+/HbFe2+ redox couple companied with a proton transfer.The electrocatalytic reduction of oxygen was also explored at the Hb-KGM/RTIL/Nafion/ GC electrode.

Key words： ionic liquid; konjac glucomannan(KGM); hemoglobin; electrocatalysis

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