An increase in gas sensitivity and recovery of an MWCNT-based gas sensor system in response to an electric field

被引：12

作者：

Lee, Sei-Hyun ^{[2
]}

Im, Ji Sun ^{[1
]}

Kang, Seok Chang ^{[1
]}

Bae, Tae-Sung ^{[3
]}

In, Se Jin ^{[4
]}

Jeong, Euigyung ^{[1
]}

Lee, Young-Seak ^{[1
]}

机构：

[1] Chungnam Natl Univ, Dept Fine Chem Engn & Chem, BK21 E2M, Taejon 305764, South Korea

[2] Korea Polytech IV Coll, Dept Elect & Elect Engn, Taejon 300702, South Korea

[3] Korea Basic Sci Inst, Jeonju 561756, South Korea

[4] Woosong Univ, Dept Fire & Disaster Protect Engn, Taejon 300718, South Korea

来源：

CHEMICAL PHYSICS LETTERS | 2010年 / 497卷 / 4-6期

关键词：

CARBON NANOTUBES; THIN-FILMS; TEMPERATURE;

D O I：

10.1016/j.cplett.2010.08.002

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：

The application of an electric field was found to markedly increase the sensitivity of a gas sensor system. Multi-walled carbon nanotubes (MWCNTs) were used as a gas-sensing material in order to detect a target nitrogen monoxide (NO) gas. The response of the gas sensor was evaluated under both positive and negative electric fields at various applied voltages. The responsiveness of the gas sensor increased by a factor of 2.5 as a function of increasing positive electric fields because of the optimized electron acceptor-donor reaction between the NO gas and the MWCNTs. It was concluded that the applied electric field accelerated the electron transfer between the NO gas and the MWCNTs. (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：191 / 195

页数：5

共 26 条

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