Please use this identifier to cite or link to this item: http://hdl.handle.net/11189/5610
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dc.contributor.authorNyamukamba, Pardon-
dc.contributor.authorOkoh, Omobola-
dc.contributor.authorTichagwa, Lilian-
dc.contributor.authorGreyling, Corinne. J-
dc.date.accessioned2017-06-01T08:24:40Z-
dc.date.available2017-06-01T08:24:40Z-
dc.date.issued2016-
dc.identifier.citationPardon Nyamukamba, Omobola Okoh, Lilian Tichagwa, and Corinne Greyling, “Preparation of Titanium Dioxide Nanoparticles Immobilized on Polyacrylonitrile Nanofibres for the Photodegradation of Methyl Orange,” International Journal of Photoenergy, vol. 2016, Article ID 3162976, 9 pages, 2016. doi:10.1155/2016/3162976en_US
dc.identifier.urihttp://dx.doi.org/10.1155/2016/3162976-
dc.identifier.urihttp://hdl.handle.net/11189/5610-
dc.description.abstractHerein, we describe the synthesis of titanium dioxide (TiO2) nanoparticles by the hydrolysis and condensation of titanium tetrachloride. The resulting nanoparticles were immobilized on polyacrylonitrile (PAN) based nanofibres by an electrospinning technique in order to allow simple isolation and reuse of titania semiconductor photocatalyst. The composite nanofibres were heat treated to convert the polymer nanofibres to carbon nanofibres and to convert amorphous TiO2 to crystalline TiO2. X-ray diffraction (XRD) analysis showed that the rutile phase was the major phase and the equatorial peaks of PAN disappeared after heat treatment at 600∘ C. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) analysis confirmed that some TiO2 nanoparticles were encapsulated whereas some were surface residing on the electrospun nanofibres. The TiO2 nanoparticles were found to lower the cyclization temperature of PAN as indicated by differential scanning colorimetry (DSC) and differential thermal analysis (DTA). Photocatalytic studies on the degradation of methyl orange dye under UV light irradiation showed that composite nanofibres were capable of degrading organic contaminants in water. The carbon nanofibres with surface residing titanium dioxide nanoparticles (TiO2/CNF-SR) showed the highest photocatalytic activity (59.35% after 210 minutes) due to direct contact between the TiO2 photocatalyst and methyl orangeen_US
dc.description.sponsorshipNational Research Foundation and the Department of Science and Technology of South Africa for their generous financial support as part of the Nanotechnology for Water Treatment Flagship with Professor Sanderson as the grant holder.en_US
dc.language.isoenen_US
dc.publisherInternational Journal of Photoenergyen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/za/-
dc.subjectTitanium dioxideen_US
dc.subjectPolyacrylonitrile (PAN)en_US
dc.subjectMethyl orangeen_US
dc.subjectTransmission electron microscopy (TEM)en_US
dc.titlePreparation of titanium dioxide nanoparticles immobilized on polyacrylonitrile nanofibres for the photodegradation of methyl orangeen_US
dc.type.patentArticleen_US
Appears in Collections:Eng - Journal articles (DHET subsidised)
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