Cover Image

Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst

Enhanced ferromagnetic and visible light active titanium dioxide (TiO2) photocatalyst was synthesised by depositing a hard ferromagnet strontium ferrite (SrFe12O19) onto TiO2 via an effortless hydrothermal and poly-condensation method. The catalysts were characterised by X-ray diffraction (XRD), tra...

Full description

Saved in:
Bibliographic Details
Main Authors: Aziz, A.A., Puma, G.L., Ibrahim, S., Saravanan, P.
Format: Article
Language:English
Published: 2013
Subjects:
T Technology (General)
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.um.edu.my/9437/1/Preparation%2C_characterisation_and_solar_photoactivity_of_titania_supported_strontium_ferrite_nanocomposite_photocatalyst.pdf
http://eprints.um.edu.my/9437/
http://www.scopus.com/inward/record.url?eid=2-s2.0-84873915258&partnerID=40&md5=c2075078b5c7bfe1d708f62517d1293c http://www.tandfonline.com/doi/abs/10.1080/17458080.2012.675087 http://www.tandfonline.com/doi/pdf/10.1080/17458080.2012.675087
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.um.eprints.9437
record_format eprints
spelling my.um.eprints.94372017-07-03T08:30:16Z http://eprints.um.edu.my/9437/ Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst Aziz, A.A. Puma, G.L. Ibrahim, S. Saravanan, P. T Technology (General) TA Engineering (General). Civil engineering (General) Enhanced ferromagnetic and visible light active titanium dioxide (TiO2) photocatalyst was synthesised by depositing a hard ferromagnet strontium ferrite (SrFe12O19) onto TiO2 via an effortless hydrothermal and poly-condensation method. The catalysts were characterised by X-ray diffraction (XRD), transmission electron microscope (TEM), energy dispersive X-ray spectroscopy (EDS), BET surface analysis, vibrating sample magnetometer (VSM), X-ray photon spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR) and UV-visible light spectroscopy analysis. The prepared nanocomposite photocatalyst exhibited physically a powerful ferromagnetic property with significant stability against the loss of its magnetic property (coercivity ≈2200 G). The catalyst can be fluidised and recovered by an external magnetic field enhancing separation and mixing efficiency. Furthermore, it resulted in a reduced band gap (≈2.3 eV) which resulted in enhanced visible light absorption compared with unsupported TiO2. The photocatalytic activity was investigated by degrading a recalcitrant phenolic compound, viz., 2, 4-dichlorophenol (2,4-DCP) as model pollutant under different illuminance of daylight. Complete degradation of 2,4-DCP (50 mg/L initial concentration in 0.25 L) was achieved in 120 min (supported photocatalyst) and 180 min (unsupported TiO2) under higher illuminance of sunlight. Likewise under diffused sunlight, 100% degradation of 2,4-DCP was achieved in 240 min for the supported TiO2, while ≥90% degradation could be achieved in 300 min for the unsupported TiO2. The supported nanocomposite was recycled under a permanent magnetic field with a mass recovery of 98% and reused. © 2013 Copyright Taylor and Francis Group, LLC. 2013 Article PeerReviewed application/pdf en http://eprints.um.edu.my/9437/1/Preparation%2C_characterisation_and_solar_photoactivity_of_titania_supported_strontium_ferrite_nanocomposite_photocatalyst.pdf Aziz, A.A. and Puma, G.L. and Ibrahim, S. and Saravanan, P. (2013) Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst. Journal of Experimental Nanoscience, 8 (3). pp. 295-310. ISSN 1745-8080 http://www.scopus.com/inward/record.url?eid=2-s2.0-84873915258&partnerID=40&md5=c2075078b5c7bfe1d708f62517d1293c http://www.tandfonline.com/doi/abs/10.1080/17458080.2012.675087 http://www.tandfonline.com/doi/pdf/10.1080/17458080.2012.675087 Doi 10.1080/17458080.2012.675087
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/
language English
topic T Technology (General)
TA Engineering (General). Civil engineering (General)
spellingShingle T Technology (General)
TA Engineering (General). Civil engineering (General)
Aziz, A.A.
Puma, G.L.
Ibrahim, S.
Saravanan, P.
Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst
description Enhanced ferromagnetic and visible light active titanium dioxide (TiO2) photocatalyst was synthesised by depositing a hard ferromagnet strontium ferrite (SrFe12O19) onto TiO2 via an effortless hydrothermal and poly-condensation method. The catalysts were characterised by X-ray diffraction (XRD), transmission electron microscope (TEM), energy dispersive X-ray spectroscopy (EDS), BET surface analysis, vibrating sample magnetometer (VSM), X-ray photon spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR) and UV-visible light spectroscopy analysis. The prepared nanocomposite photocatalyst exhibited physically a powerful ferromagnetic property with significant stability against the loss of its magnetic property (coercivity ≈2200 G). The catalyst can be fluidised and recovered by an external magnetic field enhancing separation and mixing efficiency. Furthermore, it resulted in a reduced band gap (≈2.3 eV) which resulted in enhanced visible light absorption compared with unsupported TiO2. The photocatalytic activity was investigated by degrading a recalcitrant phenolic compound, viz., 2, 4-dichlorophenol (2,4-DCP) as model pollutant under different illuminance of daylight. Complete degradation of 2,4-DCP (50 mg/L initial concentration in 0.25 L) was achieved in 120 min (supported photocatalyst) and 180 min (unsupported TiO2) under higher illuminance of sunlight. Likewise under diffused sunlight, 100% degradation of 2,4-DCP was achieved in 240 min for the supported TiO2, while ≥90% degradation could be achieved in 300 min for the unsupported TiO2. The supported nanocomposite was recycled under a permanent magnetic field with a mass recovery of 98% and reused. © 2013 Copyright Taylor and Francis Group, LLC.
format Article
author Aziz, A.A.
Puma, G.L.
Ibrahim, S.
Saravanan, P.
author_facet Aziz, A.A.
Puma, G.L.
Ibrahim, S.
Saravanan, P.
author_sort Aziz, A.A.
title Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst
title_short Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst
title_full Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst
title_fullStr Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst
title_full_unstemmed Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst
title_sort preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst
publishDate 2013
url http://eprints.um.edu.my/9437/1/Preparation%2C_characterisation_and_solar_photoactivity_of_titania_supported_strontium_ferrite_nanocomposite_photocatalyst.pdf
http://eprints.um.edu.my/9437/
http://www.scopus.com/inward/record.url?eid=2-s2.0-84873915258&partnerID=40&md5=c2075078b5c7bfe1d708f62517d1293c http://www.tandfonline.com/doi/abs/10.1080/17458080.2012.675087 http://www.tandfonline.com/doi/pdf/10.1080/17458080.2012.675087
_version_ 1643688563142819840
score 13.211869

Similar Items