Multi-walled carbon nanotube networks as gas sensors for NO2 detection

被引：0

作者：

Sayago, I. ^{[1
]}

Santos, H. ^{[1
]}

Horrillo, M. C. ^{[1
]}

Aleixandre, M. ^{[1
]}

Fernandez, M. J. ^{[1
]}

Terrado, E. ^{[2
]}

Maser, W. K. ^{[2
]}

Benito, A. M. ^{[2
]}

Martinez, M. T. ^{[2
]}

Gutierrez, J. ^{[1
]}

Munoz, E. ^{[2
]}

机构：

[1] CSIC, Lab Sensores, IFA, Serrano 144, Madrid 28006, Spain

[2] CSIC, Inst Carboquim, E-50018 Zaragoza, Spain

来源：

TRANSDUCERS '07 & EUROSENSORS XXI, DIGEST OF TECHNICAL PAPERS, VOLS 1 AND 2 | 2007年

关键词：

MWNT; gas sensor; NO2;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Multi-walled carbon nanotube (MWNT) networks were investigated as resistive gas sensors for nitrogen dioxide detection. Sensor films were fabricated by airbrushing MWNT dispersions on alumina substrates. Sensors were characterized by resistance measurements from 25 to 250 degrees C in air atmosphere, in order to find the optimum detection temperature. The best response to NO2 was obtained at 250 degrees C. The tested MWNT sensors were sensitive to low NO2 concentrations in air atmosphere. Moreover, these sensors provided no response to interfering gases such as H-2, NH3, toluene and octane. Thermal treatments, based in repeated heating and cooling of the films, increased the sensor response to NO2.

引用

页数：2

共 7 条

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