ZnO/CuO/Al2O3 composites for chloroform detection

被引：14
作者：
Nie, Mei-Xiang [1 ,2 ]
Li, Xiao-Zhou [1 ,2 ]
Liu, Shui-Ren [1 ,2 ]
Guo, Ying [1 ,2 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
[2] Beijing Univ Chem Technol, Beijing Key Lab Environm Harmful Chem Anal, Beijing 100029, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2015年 / 210卷
基金：
中国国家自然科学基金;
关键词：
Metallic oxide; Composite; Gas sensing; Chloroform; GAS SENSOR; CHLORINATED HYDROCARBONS; CUO NANOSTRUCTURES; SENSING PROPERTIES;
D O I：
10.1016/j.snb.2014.12.099
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this work, ZnO/CuO/Al2O3 composites were prepared via a simple coprecipitation and a hydrothermal method followed by a calcination process. The as-prepared composites were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Inductively Coupled Plasma (ICP), X-ray photoelectron spectroscopy (XPS) etc. Moreover, gas sensors based on ZnO/CuO/Al(2)O(3)were fabricated. It revealed that the sensor with certain metal ratio exhibited a fast and remarkable response to chloroform and was able to detect low concentration of chloroform down to 1 ppm in 20 s. The gas sensing mechanism was also discussed. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：211 / 217
页数：7
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