Room Temperature NO2 Gas Sensor Based on Functionalized Carbon Nanotubes /Nickel Oxide Nanoparticles

Sally K. Abbas; Asama N. Naje

doi:10.4028/www.scientific.net/NHC.30.1

Paper Titles

Room Temperature NO₂ Gas Sensor Based on Functionalized Carbon Nanotubes /Nickel Oxide Nanoparticles
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HomeNano Hybrids and CompositesNano Hybrids and Composites Vol. 30Room Temperature NO2 Gas Sensor Based on...

Room Temperature NO₂ Gas Sensor Based on Functionalized Carbon Nanotubes /Nickel Oxide Nanoparticles

Abstract:

Functionalized-multi wall carbon nanotubes (F-MWCNTs) and functionalized-single wall carbon nanotubes (F-SWCNTs) were well enhanced using NiO Nanoparticles. The sensor device consisted of a film of sensitive material (F-MWCNTs/ Nickel oxide nanoparticles) and (F-SWCNTs/ Nickel oxide nanoparticles) deposited by drop casting on n-type porous silicon substrate. The two sensors perform high sensitivity to NO₂gas at particular temperatures. The analysis indicated that the (F-MWCNTs/NiONPs) have a better performance than (F-SWCNTs/NiONPs). The F-SWCNTs/NiONPs gas sensor shows high sensitivity (18.2 %) at RT with response time 16 sec, while F-MWCNTs/NiONPs gas sensor show better sensitivity (45 %) at RT with response time 26 sec. The device shows a very reproducible sensor performance, with high repeatability, complete recovery and adequate response. A demonstration of the improvement in sensing of NO₂ gas using NiO-functionalized nanotubes is provided.

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Periodical:

Nano Hybrids and Composites (Volume 30)

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1-7

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https://doi.org/10.4028/www.scientific.net/NHC.30.1

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Online since:

November 2020

Authors:

Sally K. Abbas, Asama N. Naje*

Keywords:

Functionalized MWCNTs, Functionalized SWCNTs, Response Time, Room Temperature Gas Sensor, Sensitivity

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