Flower-like MoS2 decorated with Cu2O nanoparticles for non-enzymatic amperometric sensing of glucose
Flower-like MoS2 decorated with Cu2O nanoparticles for non-enzymatic amperometric sensing of glucose
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DOI：
10.1016/j.talanta.2017.03.008
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发表时间：
2017-05-15
期刊：
影响因子：
6.1
通讯作者：
Huang, Kejing
中科院分区：
文献类型：
--
作者：
Fang, Linxia;Wang, Fan;Huang, Kejing
在这项研究中，一种新型的纳米杂化材料组成的花状二硫化钼修饰的氧化铜纳米粒子已成功地合成非酶安培传感葡萄糖。结构表征表明，Cu 2 O纳米粒子高度分散在MoS 2纳米片上。采用循环伏安法（CV）和计时电流法研究了其电化学性能。与单一的Cu 2 O组分相比，所合成的Cu 2 O/MoS 2纳米杂化材料对葡萄糖的氧化表现出上级的电催化性能。所制备的非酶电流型葡萄糖传感器在0.01 - 4.0 mM范围内具有较宽的线性范围，低检测限为1.0 μ M（S/N =3），高灵敏度为3108.87 μ A mM（-1）cm（-2）。同时，非酶传感器对尿酸、多巴胺和抗坏血酸等干扰组分也具有良好的稳定性、重现性和高选择性。优异的分析性能是由于Cu 2 O纳米粒子和MoS 2纳米片提供的协同效应。
In this study, a novel nanohybrid consisting of flower-like MoS2 decorated with Cu2O nanoparticles has been successfully synthesized for non-enzymatic amperometric sensing of glucose. Structural characterizations revealed that Cu2O nanoparticles were highly dispersed on MoS2 nanosheets. Electrochemical performances were investigated by cyclic voltammetry (CV) and chronoamperometry. Compared to single Cu2O component, the-synthesized Cu2O/MoS2 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 4.0 mM with a low detection limit of 1.0 mu M (S/N =3) and a high sensitivity of 3108.87 mu A mM(-1) cm(-2). 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 Cu2O nanoparticals and MoS2 nanosheets.