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《中国化学快报(英文版)》
>Direct Electrochemistry of Hemoglobin Immobilized in Sodium Alginate Film on the Ionic Liquid BMIMPF6 Modified Carbon Paste Electrode
Direct Electrochemistry of Hemoglobin Immobilized in Sodium Alginate Film on the Ionic Liquid BMIMPF6 Modified Carbon Paste Electrode
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 (E0’) at -0.344 V (vs. SCE). In addition the immobilized Hb showed good electrocatalytic activity to the reduction of H2O2.
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