QCM chemical sensor based on ZnO colloid spheres for the alcohols

被引：42
作者：
Xie, Juan [1 ]
Wang, Hu [1 ]
Duan, Ming [1 ]
机构：
[1] Southwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 203卷
关键词：
Quartz crystal microbalance (QCM); ZnO colloid sphere; Chemical sensor; Adsorption; Desorption; QUARTZ-CRYSTAL MICROBALANCE; HUMIDITY SENSING PROPERTIES; FILMS;
D O I：
10.1016/j.snb.2014.06.119
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
ZnO colloid spheres with the size below 100 nm were coated on quartz crystal microbalance (QCM) by the self-assembly method. The device exhibits excellent chemical sensing properties in methanol, ethanol, and isopropanol vapor. The kinetics of adsorption-desorption and mechanism of adsorption with different alcohols were studied. The results show that the concentration of analyte vapor affects on the chemical sensitivity of QCM sensor based on ZnO colloid spheres. The adsorption-desorption modelis dependent on the type of analytes. Methanol and ethanol molecules adsorb on the ZnO surface much more easily than isopropanol molecules. (C) 2014 Elsevier B. V. All rights reserved.
引用
收藏
页码：239 / 244
页数：6
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