Direct Electrochemistry of Hemoglobin Immobilized in Sodium Alginate Film on the Ionic Liquid [BMIM]PF_6 Modified Carbon Paste Electrode  

作　　者：Wei SUN Dan Dan WANG Rui Fang GAO Jian SUN Kui JIAO 

机构地区：[1]College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042

出　　处：《Chinese Chemical Letters》2006年第12期1589-1591,共3页中国化学快报（英文版）

基　　金：supported by the National Natural.Science Foundation of China(No.20405008,20635020).

摘　　要：Room temperature ionic liquid （RTILs） [BMIM]PF6 was used as a new kind of binder to construct a chemical modified carbon paste electrode （CPE） and the direct electrochemistry of hemoglobin （Hb）, which was immobilized on the surface of RTIL/CPE with the film of sodium alginate hydrogel, was studied by cyclic voltammetry. The presence of RTILs improved the direct electron transfer of Hb and a pair of well-defined quasi-revesible redox peaks appeared in pH 7.0 B-R buffer solution. The cathodic and anodic peak potentials were located at -0.383 V and -0.305 V with the formal potential （E^0） at -0.344 V （vs. SCE）. In addition the immobilized Hb showed good electrocatalytic activity to the reduction of H2O2.Room temperature ionic liquid （RTILs） [BMIM]PF6 was used as a new kind of binder to construct a chemical modified carbon paste electrode （CPE） and the direct electrochemistry of hemoglobin （Hb）, which was immobilized on the surface of RTIL/CPE with the film of sodium alginate hydrogel, was studied by cyclic voltammetry. The presence of RTILs improved the direct electron transfer of Hb and a pair of well-defined quasi-revesible redox peaks appeared in pH 7.0 B-R buffer solution. The cathodic and anodic peak potentials were located at -0.383 V and -0.305 V with the formal potential （E^0） at -0.344 V （vs. SCE）. In addition the immobilized Hb showed good electrocatalytic activity to the reduction of H2O2.

关 键 词：HEMOGLOBIN [BMIM]PF6 direct electrochemistry ELECTROCATALYSIS chemical modifiedelectrode. 

分 类 号：Q513.4[生物学—生物化学]