Highly efficient direct electron transfer bioanode containing glucose dehydrogenase operating in human blood
作者： Justina Gineitytė , Rolandas Meškys , Marius Dagys , Dalius Ratautas
DOI: 10.1016/J.JPOWSOUR.2019.227163
关键词: Inorganic chemistry 、 Glucose dehydrogenase 、 Human blood 、 Chemistry 、 Colloidal gold 、 Polyaniline 、 Electrode 、 Average current 、 Current density 、 Electron transfer
摘要: Abstract Energy generation from bodily fluids (i. e. blood) is a significant challenge, which could be solved by designing high-performance direct electron transfer (DET) enzymatic electrodes. In this paper we report highly efficient DET bioanode based on glucose dehydrogenase, uniquely wired to polyaniline, gold nanoparticles and cysteamine modified electrode. The designed electrode demonstrates an exceptional performance generating high chronoamperometric current density reaching 1 mA cm−2 at 0.1 V vs. SCE in the presence of 5 mM glucose, while human blood samples generates average 0.65 mA cm−2 SCE, highest ever reported. Moreover, electrodes demonstrate good stability retaining 79 % 23 initial activity after constant operation for 24 h buffer solutions samples, respectively. opens new possibilities development improved implantable low-power electronics.
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