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首页> 外文期刊>Electroanalysis >Direct Electrochemistry and Electrocatalysis of Myoglobin Immobilized on Graphene-CTAB-Ionic Liquid Nanocomposite Film
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Direct Electrochemistry and Electrocatalysis of Myoglobin Immobilized on Graphene-CTAB-Ionic Liquid Nanocomposite Film

机译：石墨烯-CTAB-离子液体纳米复合薄膜上固定化的肌红蛋白的直接电化学和电催化

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Abstract This paper describes the direct electrochemistry and electrocatalysis of myoglobin immobilized on graphene-cetylramethylammonium bromide (CTAB)-ionic liquid nanocomposite film on a glassy carbon electrode. The nanocomposite was characterized by transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, and electrochemistry. It was found that the high surface area of graphene was helpful for immobilizing more proteins and the nanocomposite film could provide a favorable microenvironment for MB to retain its native structure and activity and to achieve reversible direct electron transfer reaction at an electrode. The ionic liquid may play dual roles here: it keeps the protein's activity and improves stability of the nanocomposite film; it also serves as a binder between protein and electrode, therefore, enhancing the electron transfer between the protein and the electrode. The nanocomposite films also exhibit good stability and catalytic activities for the electrocatalytic reduction of H2O2.
机译：摘要本文描述了固定在玻璃碳电极上的石墨烯-鲸蜡基甲基溴化铵（CTAB）-离子液体纳米复合膜上的肌红蛋白的直接电化学和电催化作用。该纳米复合材料的特征在于透射电子显微镜，扫描电子显微镜，X射线光电子能谱和电化学。发现石墨烯的高表面积有助于固定更多的蛋白质，并且纳米复合膜可以为MB提供有利的微环境，以保持其天然结构和活性并在电极上实现可逆的直接电子转移反应。离子液体在这里可以起双重作用：它可以保持蛋白质的活性并改善纳米复合膜的稳定性;它也可以作为蛋白质和电极之间的粘合剂，因此，可以增强蛋白质与电极之间的电子转移。纳米复合膜还表现出良好的稳定性和催化活性，可用于电催化还原H2O2。

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