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HomeMaterials Science ForumMaterials Science Forum Vol. 686Preparation of CNTs/PANi Core/Shell-Structured...

Preparation of CNTs/PANi Core/Shell-Structured Nanowires and Improvement of Sensitivity of Chemical Sensors

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Abstract:

In order to improve the sensing-properties of carbon nanotube based composite for potential applications in chemical sensors, CNTs/PANi core/shell-structured nanowires were prepared with in-situ polymerization approach. A series of characterizations was carried out by TEM (transmission electron microscopy), the Fourier-Transform Infrared (FTIR) spectra, and so on. A chemical prototype sensor was constructed based on CNTs/PANi core/shell-structured nanowires and interdigital-structured electrodes on flexible polymer substrate. The gas-sensing behaviors of the sensor to some gases operating at room temperature were examined. Results showed that the sensitivity of CNTs/PANi core/shell-structured nanowires was increased dramaticly compared with pure carbon nanotube materials. This provides a carbon nanotube based composite materials with enhanced gas-sensitivity, which would have potential applications in some chemical sensors.

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Advanced Structural Materials, IUMRS-ICA 2010

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Periodical:

Materials Science Forum (Volume 686)

Pages:

438-447

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.686.438

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Online since:

June 2011

Authors:

Xing Fa Ma, Shu Juan Niu, Ming Jun Gao, Xiao Chun He, Guang Li

Keywords:

Carbon Nanotube (CN), Chemical Sensor, CNTs/PANi Core/Shell Structure, Nanowire, Polyaniline (PANI), Sensivity Improvement

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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