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Highly sensitive humidity sensors based on polyethylene oxide/cuo/multi walled carbon nanotubes composite nanofibers

Polymer composites are favorite materials for sensing applications due to their low cost and easy fabrication. In the current study, composite nanofibers consisting of polyethylene oxide (PEO), oxidized multi-walled carbon nanotubes (MWCNT) and copper oxide (CuO) nanoparticles with 1% and 3% of fill...

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Main Authors: Ahmad, Waqas, Jabbar, Bushra, Ahmad, Imtiaz, Mohamed Jan, Badrul, Stylianakis, Minas M., Kenanakis, George, Ikram, Rabia
Format: Article
Published: Materials 2021
Subjects:
QC Physics
TP Chemical technology
Online Access:http://eprints.um.edu.my/28746/
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spelling my.um.eprints.287462022-04-20T06:39:36Z http://eprints.um.edu.my/28746/ Highly sensitive humidity sensors based on polyethylene oxide/cuo/multi walled carbon nanotubes composite nanofibers Ahmad, Waqas Jabbar, Bushra Ahmad, Imtiaz Mohamed Jan, Badrul Stylianakis, Minas M. Kenanakis, George Ikram, Rabia QC Physics TP Chemical technology Polymer composites are favorite materials for sensing applications due to their low cost and easy fabrication. In the current study, composite nanofibers consisting of polyethylene oxide (PEO), oxidized multi-walled carbon nanotubes (MWCNT) and copper oxide (CuO) nanoparticles with 1% and 3% of fillers (i.e., PEO-CuO-MWCNT: 1%, and PEO-CuO-MWCNT: 3%) were successfully developed through electrospinning for humidity sensing applications. The composite nanofibers were characterized by FTIR, XRD, SEM and EDX analysis. Firstly, they were loaded on an interdigitated electrode (IDE), and then the humidity sensing efficiency was investigated through a digital LCR meter (E4980) at different frequencies (100 Hz-1 MHz), as well as the percentage of relative humidity (RH). The results indicated that the composite nanofibers containing 1% and 3% MWCNT, combined with CuO in PEO polymer matrix, showed potent resistive and capacitive response along with high sensitivity to humidity at room temperature in an RH range of 30-90%. More specifically, the PEO-CuO-MWCNT: 1% nanocomposite displayed a resistive rapid response time within 3 s and a long recovery time of 22 s, while the PEO-CuO-MWCNT: 3% one exhibited 20 s and 11 s between the same RH range, respectively. Materials 2021-02 Article PeerReviewed Ahmad, Waqas and Jabbar, Bushra and Ahmad, Imtiaz and Mohamed Jan, Badrul and Stylianakis, Minas M. and Kenanakis, George and Ikram, Rabia (2021) Highly sensitive humidity sensors based on polyethylene oxide/cuo/multi walled carbon nanotubes composite nanofibers. Materials, 14 (4). ISSN 1996-1944, DOI https://doi.org/10.3390/ma14041037 <https://doi.org/10.3390/ma14041037>. 10.3390/ma14041037
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QC Physics
TP Chemical technology
spellingShingle QC Physics
TP Chemical technology
Ahmad, Waqas
Jabbar, Bushra
Ahmad, Imtiaz
Mohamed Jan, Badrul
Stylianakis, Minas M.
Kenanakis, George
Ikram, Rabia
Highly sensitive humidity sensors based on polyethylene oxide/cuo/multi walled carbon nanotubes composite nanofibers
description Polymer composites are favorite materials for sensing applications due to their low cost and easy fabrication. In the current study, composite nanofibers consisting of polyethylene oxide (PEO), oxidized multi-walled carbon nanotubes (MWCNT) and copper oxide (CuO) nanoparticles with 1% and 3% of fillers (i.e., PEO-CuO-MWCNT: 1%, and PEO-CuO-MWCNT: 3%) were successfully developed through electrospinning for humidity sensing applications. The composite nanofibers were characterized by FTIR, XRD, SEM and EDX analysis. Firstly, they were loaded on an interdigitated electrode (IDE), and then the humidity sensing efficiency was investigated through a digital LCR meter (E4980) at different frequencies (100 Hz-1 MHz), as well as the percentage of relative humidity (RH). The results indicated that the composite nanofibers containing 1% and 3% MWCNT, combined with CuO in PEO polymer matrix, showed potent resistive and capacitive response along with high sensitivity to humidity at room temperature in an RH range of 30-90%. More specifically, the PEO-CuO-MWCNT: 1% nanocomposite displayed a resistive rapid response time within 3 s and a long recovery time of 22 s, while the PEO-CuO-MWCNT: 3% one exhibited 20 s and 11 s between the same RH range, respectively.
format Article
author Ahmad, Waqas
Jabbar, Bushra
Ahmad, Imtiaz
Mohamed Jan, Badrul
Stylianakis, Minas M.
Kenanakis, George
Ikram, Rabia
author_facet Ahmad, Waqas
Jabbar, Bushra
Ahmad, Imtiaz
Mohamed Jan, Badrul
Stylianakis, Minas M.
Kenanakis, George
Ikram, Rabia
author_sort Ahmad, Waqas
title Highly sensitive humidity sensors based on polyethylene oxide/cuo/multi walled carbon nanotubes composite nanofibers
title_short Highly sensitive humidity sensors based on polyethylene oxide/cuo/multi walled carbon nanotubes composite nanofibers
title_full Highly sensitive humidity sensors based on polyethylene oxide/cuo/multi walled carbon nanotubes composite nanofibers
title_fullStr Highly sensitive humidity sensors based on polyethylene oxide/cuo/multi walled carbon nanotubes composite nanofibers
title_full_unstemmed Highly sensitive humidity sensors based on polyethylene oxide/cuo/multi walled carbon nanotubes composite nanofibers
title_sort highly sensitive humidity sensors based on polyethylene oxide/cuo/multi walled carbon nanotubes composite nanofibers
publisher Materials
publishDate 2021
url http://eprints.um.edu.my/28746/
_version_ 1735409574628818944
score 13.211869

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