Abstract A facile template together with doping strategy is presented to fabricate Cu2+-doped polypyrrole (Cu2+/PPy) nanotubes (NTs) as efficient mimicking peroxidase and electrocatalyst. PPy NTs were first prepared using electrospun polyacrylonitrile nanofibers as templates and subsequently doped with Cu2+ via a simple immersion strategy. The as-prepared Cu2+/PPy NTs not only exhibit an outstanding peroxidase-like catalytic efficiency but also possess an excellent electrocatalytic activity, which is used for the detection of glucose, displaying a great promise for biosensing applications. The good enzyme-like and electrochemical performances of Cu2+/PPy NTs are owing to the reduced Fermi level compared with bare PPy NTs, which is beneficial for promoting the electron transfer to the substrate. The novel Cu2+/PPy NTs are a novel type of enzyme mimics and electrocatalysts for potential bright applications in biotechnology and environment science.

中文翻译：

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Cu2+掺杂的聚吡咯纳米管具有提高的过氧化物酶模拟和电化学生物传感效率

摘要 提出了一种简单的模板和掺杂策略来制备 Cu2+ 掺杂的聚吡咯 (Cu2+/PPy) 纳米管 (NTs) 作为有效的模拟过氧化物酶和电催化剂。PPy NTs 首先使用电纺聚丙烯腈纳米纤维作为模板制备，然后通过简单的浸渍策略掺杂 Cu2+。所制备的 Cu2+/PPy NTs 不仅表现出出色的过氧化物酶样催化效率，而且还具有优异的电催化活性，可用于检测葡萄糖，在生物传感应用中显示出广阔的前景。Cu2+/PPy NTs 良好的类酶和电化学性能是由于与裸 PPy NTs 相比费米能级降低，这有利于促进电子向底物的转移。