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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemistry of Hemoglobin-Ionic Liquid-Graphene-SnO2 Nanosheet Composite Modified Electrode and Electrocatalysis
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Electrochemistry of Hemoglobin-Ionic Liquid-Graphene-SnO2 Nanosheet Composite Modified Electrode and Electrocatalysis

机译：血红蛋白离子液体石墨烯-SnO 2 纳米片复合修饰电极的电化学及电催化

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A composite that consisted of SnO2 nanosheet, graphene (GR), ionic liquid (IL) and hemoglobin (Hb) was modified on carbon ionic liquid electrode (CILE). By using Na?on film for fixing, the modified electrode was named as Na?on/Hb-IL-GR-SnO2/CILE. Spectroscopic data indicated that Hb molecules kept native structure within the composite. Cyclic voltammetric data gave a pair of well-de?ned redox peak in 0.1 mol L-1 phosphate buffer solution, proving that direct electron transfer of Hb in the composite with CILE was realized. The result was due to synergistic effects of the materials used, which fastened the electron transfer rate. Nafion/Hb-IL-GR-SnO2/CILE had excellent electrocatalytic ability to the reduction of trichloroacetic acid in a linear concentration range from 2.0 to 11.0 mmol L-1 with a detection limit of 0.615 mmol L-1. The modified electrode was valuable for the preparation of a third-generation electrochemical biosensor.
机译：在碳离子液体电极（CILE）上修饰了由SnO2纳米片，石墨烯（GR），离子液体（IL）和血红蛋白（Hb）组成的复合材料。通过使用Na 2 on膜进行固定，将改性电极命名为Na 2 on / Hb-IL-GR-SnO 2 / CILE。光谱数据表明Hb分子在复合物中保持天然结构。循环伏安数据在0.1 mol L-1磷酸盐缓冲溶液中给出了一对定义良好的氧化还原峰，证明了含CILE的复合物中Hb的直接电子转移得以实现。结果是由于所用材料的协同作用，从而提高了电子传输速率。 Nafion / Hb-IL-GR-SnO2 / CILE在线性浓度范围为2.0至11.0 mmol L-1且检测限为0.615 mmol L-1的情况下，具有出色的电催化还原三氯乙酸的能力。修饰电极对第三代电化学生物传感器的制备具有重要意义。

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