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Adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (TNT) synthesized via hydrothermal method

Removal of methylene blue (MB) via adsorption and photocatalysis using titanate nanotubes (TNTs) with different surface areas were investigated and compared to commercial titanium dioxide (TiO2) P25 Degussa nanoparticles. The TNTs with surface area ranging from 20 m2/g to 200 m2/g were synthesized v...

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Main Authors:	Subramaniam, M. N., Goh, P. S., Abdullah, N., Lau, W. J., Ng, B. C., Ismail, A. F.
Format:	Article
Published:	Springer Netherlands 2017
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/76518/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020896385&doi=10.1007%2fs11051-017-3920-9&partnerID=40&md5=fd98a151a316e18b6f4082c4f5257acc
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spelling	my.utm.765182018-04-30T13:29:07Z http://eprints.utm.my/id/eprint/76518/ Adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (TNT) synthesized via hydrothermal method Subramaniam, M. N. Goh, P. S. Abdullah, N. Lau, W. J. Ng, B. C. Ismail, A. F. TP Chemical technology Removal of methylene blue (MB) via adsorption and photocatalysis using titanate nanotubes (TNTs) with different surface areas were investigated and compared to commercial titanium dioxide (TiO2) P25 Degussa nanoparticles. The TNTs with surface area ranging from 20 m2/g to 200 m2/g were synthesized via hydrothermal method with different reaction times. TEM imaging confirmed the tubular structure of TNT while XRD spectra indicated all TNTs exhibited anatase crystallinity. Batch adsorption rate showed linearity with surface properties of TNTs, where materials with higher surface area showed higher adsorption rate. The highest MB adsorption (70%) was achieved by TNT24 in 60 min whereas commercial TiO2 exhibited the lowest adsorption of only 10% after 240 min. Adsorption isotherm studies indicated that adsorption using TNT is better fitted into Langmuir adsorption isotherm than Freundlich isotherm model. Furthermore, TNT24 was able to perform up to 90% removal of MB within 120 min, demonstrating performance that is 2-fold better compared to commercial TiO2. The high surface area and surface Bronsted acidity are the main reasons for the improvement in MB removal performance exhibited by TNT24. The improvement in surface acidity enhanced the adsorption properties of all the nanotubes prepared in this study. Springer Netherlands 2017 Article PeerReviewed Subramaniam, M. N. and Goh, P. S. and Abdullah, N. and Lau, W. J. and Ng, B. C. and Ismail, A. F. (2017) Adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (TNT) synthesized via hydrothermal method. Journal of Nanoparticle Research, 19 (6). ISSN 1388-0764 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020896385&doi=10.1007%2fs11051-017-3920-9&partnerID=40&md5=fd98a151a316e18b6f4082c4f5257acc DOI:10.1007/s11051-017-3920-9
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TP Chemical technology
spellingShingle	TP Chemical technology Subramaniam, M. N. Goh, P. S. Abdullah, N. Lau, W. J. Ng, B. C. Ismail, A. F. Adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (TNT) synthesized via hydrothermal method
description	Removal of methylene blue (MB) via adsorption and photocatalysis using titanate nanotubes (TNTs) with different surface areas were investigated and compared to commercial titanium dioxide (TiO2) P25 Degussa nanoparticles. The TNTs with surface area ranging from 20 m2/g to 200 m2/g were synthesized via hydrothermal method with different reaction times. TEM imaging confirmed the tubular structure of TNT while XRD spectra indicated all TNTs exhibited anatase crystallinity. Batch adsorption rate showed linearity with surface properties of TNTs, where materials with higher surface area showed higher adsorption rate. The highest MB adsorption (70%) was achieved by TNT24 in 60 min whereas commercial TiO2 exhibited the lowest adsorption of only 10% after 240 min. Adsorption isotherm studies indicated that adsorption using TNT is better fitted into Langmuir adsorption isotherm than Freundlich isotherm model. Furthermore, TNT24 was able to perform up to 90% removal of MB within 120 min, demonstrating performance that is 2-fold better compared to commercial TiO2. The high surface area and surface Bronsted acidity are the main reasons for the improvement in MB removal performance exhibited by TNT24. The improvement in surface acidity enhanced the adsorption properties of all the nanotubes prepared in this study.
format	Article
author	Subramaniam, M. N. Goh, P. S. Abdullah, N. Lau, W. J. Ng, B. C. Ismail, A. F.
author_facet	Subramaniam, M. N. Goh, P. S. Abdullah, N. Lau, W. J. Ng, B. C. Ismail, A. F.
author_sort	Subramaniam, M. N.
title	Adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (TNT) synthesized via hydrothermal method
title_short	Adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (TNT) synthesized via hydrothermal method
title_full	Adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (TNT) synthesized via hydrothermal method
title_fullStr	Adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (TNT) synthesized via hydrothermal method
title_full_unstemmed	Adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (TNT) synthesized via hydrothermal method
title_sort	adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (tnt) synthesized via hydrothermal method
publisher	Springer Netherlands
publishDate	2017
url	http://eprints.utm.my/id/eprint/76518/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020896385&doi=10.1007%2fs11051-017-3920-9&partnerID=40&md5=fd98a151a316e18b6f4082c4f5257acc
_version_	1643657332132937728
score	13.211869

Adsorption and photocatalytic degradation of methylene blue using high surface area titanate nanotubes (TNT) synthesized via hydrothermal method

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