Gas Sensors Based on Single-Wall Carbon Nanotubes

Single-wall carbon nanotubes (SWCNTs) have a high aspect ratio, large surface area, good stability and unique metallic or semiconducting electrical conductivity, they are therefore considered a promising candidate for the fabrication of flexible gas sensors that are expected to be used in the Intern...

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Published inMolecules (Basel, Switzerland) Vol. 27; no. 17; p. 5381
Main Authors Guo, Shu-Yu, Hou, Peng-Xiang, Zhang, Feng, Liu, Chang, Cheng, Hui-Ming
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 24.08.2022
MDPI
Subjects
Adsorption
Binding sites
Carbon
Electric properties
Electrical conductivity
Electronics
gas sensor
Gases
Hydrocarbons
Internet of Things
Liu Chang
Nanotubes
Nanotubes, Carbon - chemistry
Response time
Review
Sensors
single-wall carbon nanotubes
Transistors
Israel
gas sensor
single-wall carbon nanotubes
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Summary:Single-wall carbon nanotubes (SWCNTs) have a high aspect ratio, large surface area, good stability and unique metallic or semiconducting electrical conductivity, they are therefore considered a promising candidate for the fabrication of flexible gas sensors that are expected to be used in the Internet of Things and various portable and wearable electronics. In this review, we first introduce the sensing mechanism of SWCNTs and the typical structure and key parameters of SWCNT-based gas sensors. We then summarize research progress on the design, fabrication, and performance of SWCNT-based gas sensors. Finally, the principles and possible approaches to further improving the performance of SWCNT-based gas sensors are discussed.
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ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27175381