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Tuning the optical bandgap of multi-walled carbon nanotube-modified zinc silicate glass-ceramic composites

Novel glass-ceramic composites with optical bandgap tunability were synthesised. Zinc silicate powder (ZS) was mixed with multi-walled carbon nanotubes (MWCNTs) at various mass fractions (0, 1, 2, and 3 wt %), followed by argon sintering. X-ray diffraction (XRD) analysis revealed the structural chan...

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Main Authors: Chan, Kar Fei, Mohd Zaid, Mohd Hafiz, Liza, Shahira, Mamat, Md Shuhazlly, Matori, Khamirul Amin, Endot, Nor Azam, Tanemura, Masaki, Yaakob, Yazid
Format: Article
Published: Elsevier 2021
Online Access:http://psasir.upm.edu.my/id/eprint/93450/
https://www.sciencedirect.com/science/article/pii/S0272884221010609
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spelling my.upm.eprints.934502023-01-12T06:47:16Z http://psasir.upm.edu.my/id/eprint/93450/ Tuning the optical bandgap of multi-walled carbon nanotube-modified zinc silicate glass-ceramic composites Chan, Kar Fei Mohd Zaid, Mohd Hafiz Liza, Shahira Mamat, Md Shuhazlly Matori, Khamirul Amin Endot, Nor Azam Tanemura, Masaki Yaakob, Yazid Novel glass-ceramic composites with optical bandgap tunability were synthesised. Zinc silicate powder (ZS) was mixed with multi-walled carbon nanotubes (MWCNTs) at various mass fractions (0, 1, 2, and 3 wt %), followed by argon sintering. X-ray diffraction (XRD) analysis revealed the structural change from an amorphous ZS phase to a crystalline willemite phase (Zn2SiO4) by adding MWCNTs, and the largest crystallite size was obtained for ZS with 2.0 wt% MWCNTs. Although the agglomeration of ZS and MWCNTs was observed by field emission scanning electron microscopy (FESEM), there was no chemical interaction between ZS and MWCNTs as confirmed by Fourier transform infrared spectroscopy (FTIR). MWCNTs enhanced the crystallisation, which led to the green emission of Zn2SiO4 blue-shifting from 572 nm to 557 nm. The narrowed optical bandgap of Zn2SiO4 was attributed to the MWCNT-induced exciton localised between the valence band and conduction band of Zn2SiO4. The bandgap tuning effect of MWCNTs potentially paved new ways to mass fabricate zinc silicate-based semiconductors with desirable optical bandgap energy Eg, which significantly benefits the sensor and laser-related industry. Elsevier 2021-07-15 Article PeerReviewed Chan, Kar Fei and Mohd Zaid, Mohd Hafiz and Liza, Shahira and Mamat, Md Shuhazlly and Matori, Khamirul Amin and Endot, Nor Azam and Tanemura, Masaki and Yaakob, Yazid (2021) Tuning the optical bandgap of multi-walled carbon nanotube-modified zinc silicate glass-ceramic composites. Ceramics International, 47 (14). 20108 - 20116. ISSN 0272-8842 https://www.sciencedirect.com/science/article/pii/S0272884221010609 10.1016/j.ceramint.2021.04.017
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description Novel glass-ceramic composites with optical bandgap tunability were synthesised. Zinc silicate powder (ZS) was mixed with multi-walled carbon nanotubes (MWCNTs) at various mass fractions (0, 1, 2, and 3 wt %), followed by argon sintering. X-ray diffraction (XRD) analysis revealed the structural change from an amorphous ZS phase to a crystalline willemite phase (Zn2SiO4) by adding MWCNTs, and the largest crystallite size was obtained for ZS with 2.0 wt% MWCNTs. Although the agglomeration of ZS and MWCNTs was observed by field emission scanning electron microscopy (FESEM), there was no chemical interaction between ZS and MWCNTs as confirmed by Fourier transform infrared spectroscopy (FTIR). MWCNTs enhanced the crystallisation, which led to the green emission of Zn2SiO4 blue-shifting from 572 nm to 557 nm. The narrowed optical bandgap of Zn2SiO4 was attributed to the MWCNT-induced exciton localised between the valence band and conduction band of Zn2SiO4. The bandgap tuning effect of MWCNTs potentially paved new ways to mass fabricate zinc silicate-based semiconductors with desirable optical bandgap energy Eg, which significantly benefits the sensor and laser-related industry.
format Article
author Chan, Kar Fei
Mohd Zaid, Mohd Hafiz
Liza, Shahira
Mamat, Md Shuhazlly
Matori, Khamirul Amin
Endot, Nor Azam
Tanemura, Masaki
Yaakob, Yazid
spellingShingle Chan, Kar Fei
Mohd Zaid, Mohd Hafiz
Liza, Shahira
Mamat, Md Shuhazlly
Matori, Khamirul Amin
Endot, Nor Azam
Tanemura, Masaki
Yaakob, Yazid
Tuning the optical bandgap of multi-walled carbon nanotube-modified zinc silicate glass-ceramic composites
author_facet Chan, Kar Fei
Mohd Zaid, Mohd Hafiz
Liza, Shahira
Mamat, Md Shuhazlly
Matori, Khamirul Amin
Endot, Nor Azam
Tanemura, Masaki
Yaakob, Yazid
author_sort Chan, Kar Fei
title Tuning the optical bandgap of multi-walled carbon nanotube-modified zinc silicate glass-ceramic composites
title_short Tuning the optical bandgap of multi-walled carbon nanotube-modified zinc silicate glass-ceramic composites
title_full Tuning the optical bandgap of multi-walled carbon nanotube-modified zinc silicate glass-ceramic composites
title_fullStr Tuning the optical bandgap of multi-walled carbon nanotube-modified zinc silicate glass-ceramic composites
title_full_unstemmed Tuning the optical bandgap of multi-walled carbon nanotube-modified zinc silicate glass-ceramic composites
title_sort tuning the optical bandgap of multi-walled carbon nanotube-modified zinc silicate glass-ceramic composites
publisher Elsevier
publishDate 2021
url http://psasir.upm.edu.my/id/eprint/93450/
https://www.sciencedirect.com/science/article/pii/S0272884221010609
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score 13.211869

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