Dye-assisted dispersion of single-walled carbon nanotubes for solution fabrication of NO2 sensors

Dye-assisted dispersion of single-walled carbon nanotubes for solution fabrication of NO2 sensors

Direct golden orange dye molecules were used as a dispersing agent to produce suspensions of single-walled carbon nanotubes (SWCNTs) in water. Uniform, thin film networks were fabricated by vacuum filtration using different concentrations of SWCNT and transferred subsequently to glass substrates. Th...

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Main Authors: M. M. Ramli, W. Zhang, S. R. P. Silva, S. J. Henley
Format: Article
Language:English
Published: AIP Publishing LLC 2012-09-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4752760
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spelling doaj-526c8fa0ab34424ca64bab9c6118fe182020-11-25T02:25:40ZengAIP Publishing LLCAIP Advances2158-32262012-09-0123032165032165-810.1063/1.4752760065203ADVDye-assisted dispersion of single-walled carbon nanotubes for solution fabrication of NO2 sensorsM. M. Ramli0W. Zhang1S. R. P. Silva2S. J. Henley3Nanoelectronics Centre, Advanced Technology Institute, University of Surrey, Guildford, Surrey GU2 7XH, United KingdomNanoelectronics Centre, Advanced Technology Institute, University of Surrey, Guildford, Surrey GU2 7XH, United KingdomNanoelectronics Centre, Advanced Technology Institute, University of Surrey, Guildford, Surrey GU2 7XH, United KingdomNanoelectronics Centre, Advanced Technology Institute, University of Surrey, Guildford, Surrey GU2 7XH, United KingdomDirect golden orange dye molecules were used as a dispersing agent to produce suspensions of single-walled carbon nanotubes (SWCNTs) in water. Uniform, thin film networks were fabricated by vacuum filtration using different concentrations of SWCNT and transferred subsequently to glass substrates. The dispersion efficiency was compared to other surfactants. Measurement of the sheet resistance as a function of SWCNT concentration showed a transition from 2D percolation to 3D conduction behaviour when the concentration of SWCNTs exceeded 0.001 mg/mL. The electrical response to NO2 gas exposure was investigated as a function of temperature and an optimum response was observed at 200°C.http://dx.doi.org/10.1063/1.4752760
collection DOAJ
language English
format Article
sources DOAJ
author M. M. Ramli
W. Zhang
S. R. P. Silva
S. J. Henley
spellingShingle M. M. Ramli
W. Zhang
S. R. P. Silva
S. J. Henley
Dye-assisted dispersion of single-walled carbon nanotubes for solution fabrication of NO2 sensors
AIP Advances
author_facet M. M. Ramli
W. Zhang
S. R. P. Silva
S. J. Henley
author_sort M. M. Ramli
title Dye-assisted dispersion of single-walled carbon nanotubes for solution fabrication of NO2 sensors
title_short Dye-assisted dispersion of single-walled carbon nanotubes for solution fabrication of NO2 sensors
title_full Dye-assisted dispersion of single-walled carbon nanotubes for solution fabrication of NO2 sensors
title_fullStr Dye-assisted dispersion of single-walled carbon nanotubes for solution fabrication of NO2 sensors
title_full_unstemmed Dye-assisted dispersion of single-walled carbon nanotubes for solution fabrication of NO2 sensors
title_sort dye-assisted dispersion of single-walled carbon nanotubes for solution fabrication of no2 sensors
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2012-09-01
description Direct golden orange dye molecules were used as a dispersing agent to produce suspensions of single-walled carbon nanotubes (SWCNTs) in water. Uniform, thin film networks were fabricated by vacuum filtration using different concentrations of SWCNT and transferred subsequently to glass substrates. The dispersion efficiency was compared to other surfactants. Measurement of the sheet resistance as a function of SWCNT concentration showed a transition from 2D percolation to 3D conduction behaviour when the concentration of SWCNTs exceeded 0.001 mg/mL. The electrical response to NO2 gas exposure was investigated as a function of temperature and an optimum response was observed at 200°C.
url http://dx.doi.org/10.1063/1.4752760
work_keys_str_mv AT mmramli dyeassisteddispersionofsinglewalledcarbonnanotubesforsolutionfabricationofno2sensors
AT wzhang dyeassisteddispersionofsinglewalledcarbonnanotubesforsolutionfabricationofno2sensors
AT srpsilva dyeassisteddispersionofsinglewalledcarbonnanotubesforsolutionfabricationofno2sensors
AT sjhenley dyeassisteddispersionofsinglewalledcarbonnanotubesforsolutionfabricationofno2sensors
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