Transient behavior of carbon nanotube thin film for adsorption of polar and non-polar molecules

被引：3
|
作者：
Tomita, Yoshihiro [1 ]
Inoue, Shuhei [1 ]
Matsumura, Yukihiko [1 ]
机构：
[1] Hiroshima Univ, Dept Mech Sci & Engn, 1-4-1 Kagamiyama, Higashihiroshima 7398527, Japan
来源：
CHEMICAL PHYSICS LETTERS | 2018年 / 691卷
关键词：
SEMICONDUCTING METAL-OXIDES; FIELD-EFFECT TRANSISTOR; GAS-DETECTION; SENSING MECHANISM; SENSORS; TEMPERATURE; VAPOR;
D O I：
10.1016/j.cplett.2017.11.049
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Application of carbon nanotube (CNT) film as a gas sensor is highly desired. Transient behavior of molecular adsorption provides adsorption and desorption constants; however, to date, few researchers have investigated it. Here, we focused on the transient behavior of electric conductance of the CNT film during adsorption. Adsorption of polar molecules showed predicable behavior, but non-polar molecules showed a sudden change of electric conductance that indicated excess adsorption. We analyzed the process based on Langmuir adsorption, and adsorption and desorption constants, which are considered to be physical properties; however, these parameters did not show good agreement for the same film. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：351 / 354
页数：4
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