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

Authors

Liu YANG, Department of Chemistry,Shanghai Normal University,Shanghai 200234,China;
Xia-qin WU, Department of Chemistry,Shanghai Normal University,Shanghai 200234,China;
Wen-jing HOU, Department of Chemistry,Shanghai Normal University,Shanghai 200234,China;
Lin-fei GU, Department of Chemistry,Shanghai Normal University,Shanghai 200234,China;
Rong WANG, Department of Chemistry,Shanghai Normal University,Shanghai 200234,China;
Xiao-ming GUO, Dept.of Chemistry and Engineering,Shanghai Institute of Technology,Shanghai 200235,China;
Zong-rang ZHANG, Department of Chemistry,Shanghai Normal University,Shanghai 200234,China;

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.

Keywords

ionic liquid, konjac glucomannan(KGM), hemoglobin, electrocatalysis

DOI Link

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

Publication Date

2008-08-28

Online Available Date

2008-08-28

Revised Date

2008-08-28

Received Date

2008-08-28

Recommended Citation

Liu YANG, Xia-qin WU, Wen-jing HOU, Lin-fei GU, Rong WANG, Xiao-ming GUO, Zong-rang ZHANG. Direct Electrochemistry of Hemoglobin Immobilized on the Electrode Modified with Ionic Liquid and KGM[J]. Journal of Electrochemistry, 2008 , 14(3): 304-307.
DOI: 10.61558/2993-074X.1911
Available at: https://jelectrochem.xmu.edu.cn/journal/vol14/iss3/15