Adsorption Kinetics of NO2 on Single-Walled Carbon Nanotube Thin-Film Sensor

被引：28

作者：

Wongwiriyapan, Winadda ^{[1
]}

Inoue, Satoshi ^{[1
]}

Honda, Shin-ichi ^{[1
]}

Katayama, Mitsuhiro ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Div Elect Elect & Informat Engn, Suita, Osaka 5650871, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2008年 / 47卷 / 10期

基金：

日本学术振兴会;

关键词：

single-walled carbon nanotube; gas sensor; Langmuir adsorption isotherm; sticking probability; adsorption energy;

D O I：

10.1143/JJAP.47.8145

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The adsorption kinetics of NO2 on a single-walled carbon nanotube (SWNT) thin-film sensor was investigated. To avoid the influence of ambient air, the adsorption property of SWNTs was explored under high vacuum. By virtue of the suppression of the influence of residual gases and the cleanness of the SWNT surface in vacuum, the SWNTs exhibited high sensitivity with a detection limit of lower than 1 ppb. On the basis of the Langmuir adsorption isotherm, the sticking probability and adsorption energy of NO2 molecules on SWNTs were experimentally estimated. [DOI: 10.1143/JJAP.47.8145]

引用

页码：8145 / 8147

页数：3

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