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首页> 外文期刊>RSC Advances >Direct electrochemical deposition of polyaniline nanowire array on reduced graphene oxide modified graphite electrode for direct electron transfer biocatalysis
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Direct electrochemical deposition of polyaniline nanowire array on reduced graphene oxide modified graphite electrode for direct electron transfer biocatalysis

机译：在还原氧化石墨烯修饰的石墨电极上直接电化学沉积聚苯胺纳米线阵列，用于直接电子转移生物催化

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摘要

A highly ordered polyaniline (PANI) nanowire array is produced via a one-step template-free electrochemical approach on reduced graphene oxide (RGO) modified graphite electrode (GE). Direct electron transfer (DET) between glucose oxidase (GOx) and the electrode is achieved by using the PANI nanowire array with the immobilization of GOx. The DET based biocatalysis application of the as fabricated GOx/PANI/RGO/GE electrode has been demonstrated. The as-fabricated glucose sensor exhibits a very rapid response time (<3 s), a linear response to glucose in the concentration range of 0.1-8.5 mM, a sensitivity of 12.3 mu A mM(-1) cm(-2), a low detection limit of 0.7 mu M and good anti-interference ability. The as assembled glucose biofuel cell which uses GOx/PANI/RGO/GE as a bioanode and an electrochemically controlled cathode shows a maximum power output of 115.4 mu W cm(-2).
机译：通过一步还原的氧化石墨烯（RGO）修饰的石墨电极（GE）上的无模板的电化学方法生产了高度有序的聚苯胺（PANI）纳米线阵列。葡萄糖氧化酶（GOx）与电极之间的直接电子转移（DET）是通过使用固定GOx的PANI纳米线阵列实现的。已经证明了所制造的GOx / PANI / RGO / GE电极的基于DET的生物催化应用。制成的葡萄糖传感器表现出非常快的响应时间（<3 s），在0.1-8.5 mM的浓度范围内对葡萄糖具有线性响应，灵敏度为12.3μA mM（-1）cm（-2），检出限低至0.7μM，抗干扰能力强。使用GOx / PANI / RGO / GE作为生物阳极和电化学控制的阴极的组装葡萄糖生物燃料电池，其最大功率输出为115.4μW cm（-2）。

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