An excellent triethylamine (TEA) sensor based on unique hierarchical MoS2/ZnO composites composed of porous microspheres and nanosheets

被引：119
作者：
Xu, Xiaoli [1 ]
Wang, Shengyi [1 ]
Liu, Wangwang [1 ]
Chen, Yan [2 ]
Ma, Shuyi [1 ]
Yun, Pengdou [1 ]
机构：
[1] Northwest Normal Univ, Coll Phys & Elect Engn, Key Lab Atom & Mol Phys Funct Mat Gansu Prov, Lanzhou 730070, Peoples R China
[2] Northwest Univ Nationalities, Lanzhou 730030, Gansu, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2021年 / 333卷 / 333期
基金：
中国国家自然科学基金;
关键词：
MoS2/ZnO; Hydrothermal synthesis; Hierarchical microstructure; Heterojunction composites; Gas sensor;
D O I：
10.1016/j.snb.2021.129616
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A convenient two-step hydrothermal method was used to prepare unique hierarchical MoS2/ZnO composites composed of porous microspheres and nanosheets. The gas sensing properties of MoS2/ZnO composite sensor was investigated. Compared with pure MoS2, the MoS2/ZnO composite sensor shows a remarkably increased response of 23.57 to triethylamine (TEA). In addition, the much shorter recovery time for MoS2/ZnO sensor is a sharp contrast to the terribly bad desorption ability of pure MoS2. The prepared MoS2/ZnO gas sensor can achieve a recovery rate of over 90 % after 134 s without using auxiliary means. The composite material also presents strong anti-interference ability and outstanding selectivity. The excellent sensing performances of MoS2/ZnO composite sensor may be attributed to the n-n composite heterojunction and the abundant diffusion channels originated from the unique microstructure. Our research work may provide a valuable strategy for preparing high-performance TEA sensor with low-cost.
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页数：10
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