花状 MoS 负载氧化铜纳米粒子用于葡萄糖的无酶安培传感。

Flower-like MoS decorated with CuO nanoparticles for non-enzymatic amperometric sensing of glucose.

机构信息

College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the Sourth of Henan, Xinyang Normal University, Xinyang, China.

出版信息

Talanta. 2017 May 15;167:593-599. doi: 10.1016/j.talanta.2017.03.008. Epub 2017 Mar 4.

DOI:10.1016/j.talanta.2017.03.008

PMID:28340766

Abstract

In this study, a novel nanohybrid consisting of flower-like MoS decorated with CuO nanoparticles has been successfully synthesized for non-enzymatic amperometric sensing of glucose. Structural characterizations revealed that CuO nanoparticles were highly dispersed on MoS nanosheets. Electrochemical performances were investigated by cyclic voltammetry (CV) and chronoamperometry. Compared to single CuO component, the-synthesized CuO/MoS nanohybrid showed superior electrocatalysis to the oxidation of glucose. The fabricated non-enzymatic amperometric glucose sensor exhibited a wide linear range from 0.01 to 4.0mM with a low detection limit of 1.0µM (S/N =3) and a high sensitivity of 3108.87μAmMcm. Meanwhile, the non-enzymatic sensor also possesses satisfactory stability, good reproducibility and high selectivity to interfering components of uric acid, dopamine and ascorbic acid. The excellent analytical performances are resulted from the synergistic effect provided by the CuO nanoparticals and MoS nanosheets.

摘要

在这项研究中，成功合成了一种由花状 MoS 修饰的 CuO 纳米粒子组成的新型纳米杂化材料，用于葡萄糖的非酶安培传感。结构表征表明，CuO 纳米粒子高度分散在 MoS 纳米片上。通过循环伏安法（CV）和计时安培法研究了电化学性能。与单一的 CuO 成分相比，合成的 CuO/MoS 纳米杂化材料对葡萄糖的氧化表现出优异的电催化性能。所制备的非酶安培葡萄糖传感器在 0.01 至 4.0mM 的宽线性范围内表现出低检测限为 1.0µM（S/N =3）和高灵敏度为 3108.87μAmMcm。同时，该非酶传感器对尿酸、多巴胺和抗坏血酸等干扰成分也具有良好的稳定性、重现性和选择性。优异的分析性能归因于 CuO 纳米粒子和 MoS 纳米片提供的协同效应。