Three-dimensional (3D) copper–cobalt (Cu–Co)/reduced graphene oxide (rGO) hierarchical architectures are electrochemically deposited over a pencil graphite electrode (PGE), and the modified PGE is directly exploited as a binder-free and disposable electrode for high performance nonenzymatic glucose sensors. The morphological features substantiate that the Cu–Co nanostructures display a 3D, open, porous, interconnected network architecture, in which the rGO layers are tightly pinned among the nanofeelers. Owing to the benefits of dendrite architectures and optimized composition, Cu–Co/rGO/PGE demonstrates better glucose oxidation behavior under alkaline conditions. Being a nonenzymatic glucose sensor, Cu–Co/rGO/PGE demonstrates excellent gluose detection properties with considerable chloride poisoning resistance. The excellent analytical performance of Cu–Co/rGO/PGE comprehends its application in human serum samples. Thus, this report paves constructive opportunities for the development of disposable, environmentally benign, binder-free, cost-efficient, and scalable 3D electrodes, which may be beneficial for the development of economically viable nonenzymatic glucose sensor devices.

中文翻译：

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一次性铅笔状石墨电极上的三维枝晶Cu-Co /还原氧化石墨烯结构作为用于非酶葡萄糖检测的电化学传感器

三维（3D）铜-钴（Cu-Co）/还原氧化石墨烯（rGO）分层结构电化学沉积在铅笔状石墨电极（PGE）上，而改性PGE直接用作无粘合剂和一次性电极用于高性能非酶葡萄糖传感器。形态学特征证实了Cu-Co纳米结构显示出3D，开放，多孔，相互连接的网络体系结构，其中rGO层紧密地固定在纳米感测器之间。由于枝晶结构和优化的成分的好处，Cu–Co / rGO / PGE在碱性条件下表现出更好的葡萄糖氧化行为。作为一种非酶葡萄糖传感器，Cu–Co / rGO / PGE具有出色的葡萄糖检测性能，并且具有出色的抗氯中毒能力。Cu–Co / rGO / PGE的出色分析性能理解了其在人血清样品中的应用。因此，该报告为开发一次性，对环境无害，无粘合剂，成本效益高且可扩展的3D电极提供了建设性的机会，这可能对经济上可行的非酶葡萄糖传感器设备的开发很有帮助。