In this study, cobalt oxides functionalized MoS₂/reduced graphene oxide was synthesized via a facile one-pot hydrothermal approach. Morphology and crystal structure of this ternary nanoarchitecture were characterized through scanning electron microscopy, transmission electron microscopy, Raman spectra and X-ray photoelectron spectroscopy. An ultrasensitive non-enzymatic glucose sensor was developed by decorating this ternary nanohybrid on the working electrode of a screen-printed electrochemical sensor. Cycle sweep voltammetry and amperometry were used to study the electro-catalytic activity of the modified working electrode, which demonstrated superior catalytic activity towards glucose oxidation with an extremely low detection limit of 30 nM. Meanwhile, this sensor showed an excellent selectivity in the presence of interfering species such as uric acid, ascorbic acid, etc. Based on the screen-printed technique, enzyme mimic nanomaterials could be easily introduced into portable devices, which opens the way to take non-enzymatic glucose electrochemical sensing towards point-of-care.

中文翻译：

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基于三元Co @ MoS 2 / rGO功能化电极的丝网印刷电化学生物传感器，用于高性能非酶葡萄糖传感

在这项研究中，氧化钴官能化了MoS ₂还原的氧化石墨烯是通过一种简便的一锅水热法合成的。通过扫描电子显微镜，透射电子显微镜，拉曼光谱和X射线光电子能谱表征了该三元纳米结构的形态和晶体结构。通过在丝网印刷电化学传感器的工作电极上装饰这种三元纳米杂交体，开发了一种超灵敏的非酶葡萄糖传感器。循环扫描伏安法和安培法用于研究修饰的工作电极的电催化活性，该电极显示出对葡萄糖氧化的优异催化活性，且检测限极低，仅为30 nM。同时，在存在诸如尿酸，抗坏血酸等干扰物质的情况下，该传感器具有出色的选择性。