基于Co9S8/Ni碗状分级微纳阵列的无酶葡萄糖传感器

Enzyme-free electrochemical sensors have attracted wide attention due to a series of advantages such as high sensitivity and strong stability. The application of enzyme-free electrochemical sensors in the detection of glucose concentration is of great value for biomedicine and clinical diagnosis. In this study, Co9S8/Ni bowl-like layered array electrode was successfully prepared by two-step electrodeposition using monodisperse polystyrene spheres as template for enzyme-free glucose sensor. The structure, morphology and composition of the materials were characterized by scanning electron microscope, X-ray diffraction and X-ray spectrometer. The electrocatalytic performance of Co9S8/Ni bowl-like layered micro/nanoarray electrode for glucose was tested. The results show that the sensitivity of the electrode is 987.8 μA mM-1 cm-2 in the linear range of 0.5~4 mM, the minimum detection limit is 0.4 μM. It has good stability, anti-interference and reproducibility. Co9S8/Ni bowl-like layered array has potential application for enzyme free glucose sensors.