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Effects of heat treatment of TiO2 nanofibers on the morphological structure of PVDF nanocomposite membrane under UV irradiation

Nowadays, photocatalytic oxidation has been pledged as a valuable process for air and water purification due to its capability in degrading organic pollutants. In this study, polyvinylidene fluoride (PVDF) nanocomposite membrane consisted of electrospun titanium dioxide nanofibers (PVDF/TNF) was pre...

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Main Authors:	Nor, N. A. M., Jaafar, J., Ismail, A. F., Rahman, M. A., Othman, M. H. D., Matsuura, T., Aziz, F., Yusof, N., Salleh, W. N. W., Subramaniam, M. N.
Format:	Article
Published:	Elsevier Ltd 2017
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/76676/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033592918&doi=10.1016%2fj.jwpe.2017.11.007&partnerID=40&md5=90df1649718c00883477f5a3a0fefe50
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spelling	my.utm.766762018-04-30T13:50:02Z http://eprints.utm.my/id/eprint/76676/ Effects of heat treatment of TiO2 nanofibers on the morphological structure of PVDF nanocomposite membrane under UV irradiation Nor, N. A. M. Jaafar, J. Ismail, A. F. Rahman, M. A. Othman, M. H. D. Matsuura, T. Aziz, F. Yusof, N. Salleh, W. N. W. Subramaniam, M. N. TP Chemical technology Nowadays, photocatalytic oxidation has been pledged as a valuable process for air and water purification due to its capability in degrading organic pollutants. In this study, polyvinylidene fluoride (PVDF) nanocomposite membrane consisted of electrospun titanium dioxide nanofibers (PVDF/TNF) was prepared by hot pressing TNF onto PVDF flat sheet membrane. Titanium dioxide nanofibers (TNF) were successfully fabricated through electrospinning technique, in which electrospun from a precursor solution consisted of polyvinylpyrrolidone (PVP)/titanium tetraisopropoxide (TTIP), ethanol and acetic acid. They were then heat-treated under different calcination temperatures ranging from 400 to 600 °C. The morphological properties of TNF were characterized via scanning of electron microscope (SEM) and X-ray diffractometer (XRD). From the results collected, it is shown that the heat-treated TNF were consisted of anatase and rutile phases, whereas the un-treated TNF only possessed amorphous phase as analysed by XRD analysis. As a matter of fact, TNF-500 displayed satisfactory morphological structure, along with fiber diameter and crystalline structure compared to other TNF, thus TNF-500 was chosen for further testing. In addition, selected TNF have successfully deposited onto PVDF membrane as there is no visible lift-off. By introducing TNF into PVDF membrane matrix, said course of action resulted in a tremendously enhanced BPA photodegradation up to 85.88%. Even though the calcination process implemented on TNF has been reduced to about 4% in photocatalytic activity, further optimisation study on the loading of TNF-500 in PVDF membrane matrix could highlight favourable features of calcined TNF-500 for BPA degradation reaction. Elsevier Ltd 2017 Article PeerReviewed Nor, N. A. M. and Jaafar, J. and Ismail, A. F. and Rahman, M. A. and Othman, M. H. D. and Matsuura, T. and Aziz, F. and Yusof, N. and Salleh, W. N. W. and Subramaniam, M. N. (2017) Effects of heat treatment of TiO2 nanofibers on the morphological structure of PVDF nanocomposite membrane under UV irradiation. Journal of Water Process Engineering, 20 . pp. 193-200. ISSN 2214-7144 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033592918&doi=10.1016%2fj.jwpe.2017.11.007&partnerID=40&md5=90df1649718c00883477f5a3a0fefe50 DOI:10.1016/j.jwpe.2017.11.007
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 Nor, N. A. M. Jaafar, J. Ismail, A. F. Rahman, M. A. Othman, M. H. D. Matsuura, T. Aziz, F. Yusof, N. Salleh, W. N. W. Subramaniam, M. N. Effects of heat treatment of TiO2 nanofibers on the morphological structure of PVDF nanocomposite membrane under UV irradiation
description	Nowadays, photocatalytic oxidation has been pledged as a valuable process for air and water purification due to its capability in degrading organic pollutants. In this study, polyvinylidene fluoride (PVDF) nanocomposite membrane consisted of electrospun titanium dioxide nanofibers (PVDF/TNF) was prepared by hot pressing TNF onto PVDF flat sheet membrane. Titanium dioxide nanofibers (TNF) were successfully fabricated through electrospinning technique, in which electrospun from a precursor solution consisted of polyvinylpyrrolidone (PVP)/titanium tetraisopropoxide (TTIP), ethanol and acetic acid. They were then heat-treated under different calcination temperatures ranging from 400 to 600 °C. The morphological properties of TNF were characterized via scanning of electron microscope (SEM) and X-ray diffractometer (XRD). From the results collected, it is shown that the heat-treated TNF were consisted of anatase and rutile phases, whereas the un-treated TNF only possessed amorphous phase as analysed by XRD analysis. As a matter of fact, TNF-500 displayed satisfactory morphological structure, along with fiber diameter and crystalline structure compared to other TNF, thus TNF-500 was chosen for further testing. In addition, selected TNF have successfully deposited onto PVDF membrane as there is no visible lift-off. By introducing TNF into PVDF membrane matrix, said course of action resulted in a tremendously enhanced BPA photodegradation up to 85.88%. Even though the calcination process implemented on TNF has been reduced to about 4% in photocatalytic activity, further optimisation study on the loading of TNF-500 in PVDF membrane matrix could highlight favourable features of calcined TNF-500 for BPA degradation reaction.
format	Article
author	Nor, N. A. M. Jaafar, J. Ismail, A. F. Rahman, M. A. Othman, M. H. D. Matsuura, T. Aziz, F. Yusof, N. Salleh, W. N. W. Subramaniam, M. N.
author_facet	Nor, N. A. M. Jaafar, J. Ismail, A. F. Rahman, M. A. Othman, M. H. D. Matsuura, T. Aziz, F. Yusof, N. Salleh, W. N. W. Subramaniam, M. N.
author_sort	Nor, N. A. M.
title	Effects of heat treatment of TiO2 nanofibers on the morphological structure of PVDF nanocomposite membrane under UV irradiation
title_short	Effects of heat treatment of TiO2 nanofibers on the morphological structure of PVDF nanocomposite membrane under UV irradiation
title_full	Effects of heat treatment of TiO2 nanofibers on the morphological structure of PVDF nanocomposite membrane under UV irradiation
title_fullStr	Effects of heat treatment of TiO2 nanofibers on the morphological structure of PVDF nanocomposite membrane under UV irradiation
title_full_unstemmed	Effects of heat treatment of TiO2 nanofibers on the morphological structure of PVDF nanocomposite membrane under UV irradiation
title_sort	effects of heat treatment of tio2 nanofibers on the morphological structure of pvdf nanocomposite membrane under uv irradiation
publisher	Elsevier Ltd
publishDate	2017
url	http://eprints.utm.my/id/eprint/76676/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033592918&doi=10.1016%2fj.jwpe.2017.11.007&partnerID=40&md5=90df1649718c00883477f5a3a0fefe50
_version_	1643657378776743936
score	13.211869

Effects of heat treatment of TiO2 nanofibers on the morphological structure of PVDF nanocomposite membrane under UV irradiation

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