Iron oxide and oxygen plasma functionalized multi-walled carbon nanotubes for the discrimination of volatile organic compounds

被引：36

作者：

Clement, P. ^{[1
]}

Hafaiedh, I. ^{[2
]}

Parra, E. J. ^{[1
]}

Thamri, A. ^{[2
]}

Guillot, J. ^{[3
]}

Abdelghani, A. ^{[2
]}

Llobet, E. ^{[1
]}

机构：

[1] Univ Rovira & Virgili, MINOS EMaS, E-43007 Tarragona, Spain

[2] Carthage Univ, Nanotechnol Lab, Natl Inst Appl Sci & Technol, Ctr Urbain Nord, Charguia 1080, Tunisia

[3] Ctr Rech Publ Gabriel Lippmann, SAM, Belvaux, Luxembourg

来源：

CARBON | 2014年 / 78卷

关键词：

FILM; SENSITIVITY; BENZENE; ETHANOL; GROWTH; TOOL; NO2;

D O I：

10.1016/j.carbon.2014.07.032

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：

Oxygen plasma functionalized multiwall carbon nanotubes and iron oxide decorated multiwall carbon nanotubes are studied for detecting volatile organic compounds (VOCs) at room temperature. Alumina substrates with interdigitated gold electrodes are employed as transducers and the air-brushing method is used to coat them with a thin film of the differently treated carbon nanotube samples. The electrical characterization of the sensors in the presence of benzene, toluene, acetone, methanol and ethanol vapors is carried out. The different treatments allow for tuning the response of carbon nanotubes and it is found that combining the responses of two sensors (i.e., one decorated with iron oxide and the other treated in an oxygen plasma) enables discriminating the aromatic hydrocarbons from the other VOCs tested. Additionally, discriminating benzene from toluene also appears to be possible. Sensors as the ones presented here, which are operated at room temperature, may led to a new generation of affordable, mass produced portable/wearable detectors with important applications in the selective detection of benzene. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：510 / 520

页数：11

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