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首页> 外文期刊>Electroanalysis >Mediator-Free Bioelectrocatalytic Oxidation of Ethanol on an Electrode from Thermally Expanded Graphite Modified by Gluconobacter oxydans Membrane Fractions
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Mediator-Free Bioelectrocatalytic Oxidation of Ethanol on an Electrode from Thermally Expanded Graphite Modified by Gluconobacter oxydans Membrane Fractions

机译：氧化葡糖杆菌膜级分修饰的热膨胀石墨在电极上的乙醇无介体生物电催化氧化。

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摘要

We studied bioelectrocatalytic oxidation of ethanol with membrane fractions of Gluconobacter oxydans VKM B-1280 bacterial cells participating as an electrocatalyst. Material of the electrode was graphene-like thermally expanded graphite of a high surface area and low resistivity. Membrane fractions were immobilized on the electrode surface by application in chitosan gel to prevent desorption of the biocatalyst. The bioelectrode characteristics were studied by the voltammetric and chronopotentiometric methods. It was shown that electrooxidation of ethanol on the bioanode could proceed both in the mode of direct mediator-free electrocatalysis and by the mediator mechanism.
机译：我们研究了氧化葡糖杆菌VKM B-1280细菌细胞的膜级分作为乙醇参与的乙醇的生物电催化氧化。电极的材料是高表面积和低电阻率的石墨烯状的热膨胀石墨。通过应用壳聚糖凝胶将膜部分固定在电极表面上，以防止生物催化剂的解吸。通过伏安法和计时电位法研究了生物电极的特性。结果表明，乙醇在生物阳极上的电氧化可以直接无介电的电催化方式和介体机理进行。

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