中文摘要：

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51mV／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．

英文摘要：

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 E^0＇ is linearly dependent on solution pH with a slope value of 51 mV/pH, due to the electron transfer of HbFe^3＋/HbFe^2＋ redox couple companied with a proton transfer. The electrocatalytic reduction of oxygen was also explored at the Hb-KGM/RTIL/Nafion/GC electrode.