Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/61083
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSie, Xin Yi
dc.date.accessioned2014-06-04T07:57:38Z
dc.date.available2014-06-04T07:57:38Z
dc.date.copyright2014en_US
dc.date.issued2014
dc.identifier.urihttp://hdl.handle.net/10356/61083
dc.description.abstractIn this study, a magnetically separable nanostructured photocatalyst, TiO2/Fe3O4/SiO2/CNF, constituting of titanium dioxide (TiO2) nanosheets anchored on silica-carbon composite nanofibres, was prepared for enhanced photocatalytic oxidation (PCO). The issue of recycling in application of nanostructured TiO2 was addressed by imparting the sample with magnetic property through Fe3O4. Incorporation of anatase phase TiO2 nanosheets (TiO2-NSs) is successfully done through a facile solvothermal method combined with post-calcination in nitrogen gas, resulting in the construction of uniform sheaths of anatase TiO2-NSs on a composite carbon nanofiber backbone. This product was characterized in terms of the surface morphology, phase purity, chemical composition, thermal stability, pore properties and specific surface area using Field Emission Scanning Electron Microscopy (FE-SEM), X–ray powder diffraction (XRD), Energy Dispersive X-ray (EDX), Thermogravimetric Analysis (TGA) and N2 adsorption-desorption isotherms. The photocatalytic performance of the prepared composite was assessed by the PCO of Acid orange 7 dye as a representation pollutant, under ultraviolet (UV) illumination. From the UV-vis absorption spectrum and further calculation, it is revealed that the synthesised sample TiO2/Fe3O4/SiO2/CNF (Fe3O4 = 28.3 wt %) had the best PCO efficiency after 2 h of irradiation, superior to that of industrial Degussa P25. Plausible explanation and mechanisms for the enhanced ability were predicted and discussed. The magnetic separation of the Fe loaded photocatalyst was also demonstrated to display its efficiency in the recovery process.en_US
dc.format.extent73 p.en_US
dc.language.isoenen_US
dc.rightsNanyang Technological University
dc.subjectDRNTU::Engineering::Environmental engineering::Water treatmenten_US
dc.titleMagnetic tio2- achored silica carbon composite nanofibers for enhanced photocatalytic oxidation of acid orange 7en_US
dc.typeFinal Year Project (FYP)en_US
dc.contributor.supervisorSun Delai, Darrenen_US
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.description.degreeBachelor of Engineering (Environmental Engineering)en_US
item.grantfulltextrestricted-
item.fulltextWith Fulltext-
Appears in Collections:CEE Student Reports (FYP/IA/PA/PI)
Files in This Item:
File Description SizeFormat 
FYP Final Report (Sie Xin Yi).pdf
  Restricted Access
3.13 MBAdobe PDFView/Open

Page view(s)

153
Updated on Nov 28, 2020

Download(s) 5

3
Updated on Nov 28, 2020

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.