Porous Photocatalytic Nanotitania (T102) Thin Films For Environmental Self-Cleaning Applications
Titanium dioxide photocatalysis is one of the most promising mechanisms for absolute mineralization of organic pollutants. This research, deals with the modification of the sol gel process for the synthesis of the porous TiO₂-PEG thin films with good structural integrity for water treatment. Rela...
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| Format: | Monograph |
| Published: |
UTeM
2010
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| Online Access: | http://library.utem.edu.my:8000/elmu/index.jsp?module=webopac-d&action=graphicFullDisplayRetriever.jsp&szMaterialNo=0000063439 http://library.utem.edu.my:8000/elmu/index.jsp?module=webopac-d&action=graphicFullDisplayRetriever.jsp&szMaterialNo=0000063439 http://eprints.utem.edu.my/2848/1/Porous_Photocatalytic_Nanotitania_%28T102%29_Thin_Films_For_Environmental_Self-Cleaning_Applications_-_24_pages.pdf http://eprints.utem.edu.my/2848/2/Porous_Photocatalytic_Nanotitania_%28T102%29_Thin_Films_For_Environmental_Self-Cleaning_Applications_-_Full_Text.pdf |
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| Summary: | Titanium dioxide photocatalysis is one of the most promising mechanisms for
absolute mineralization of organic pollutants. This research, deals with the
modification of the sol gel process for the synthesis of the porous TiO₂-PEG thin
films with good structural integrity for water treatment. Relatively by adding the
PEG, it can influence the formation of TiO2 films structure and adhesion. Then, high
porosity induced by the combination effect of the template such as the PEG with
titania sol can be beneficial to the maximum exposure of the nanocrystallites.
Moreover, the formation of TiO2 associated with larger pores will accelerate the
mass transfer of the treated contaminants in the larger pore channels. For the
mesoporous TiO₂ thin films prepared by a PEG 300, PEG 400 and PEG 600 through
the sol gel method, porous structure and larger film thickness will be obtained. The
advantages of the unique structures of the as-prepared TiO₂ films in the application
of environmental self-cleaning systems are extensively studied. In this research,
details information on the preparation method, synthesis route and its mechanism,
crystallographic and structural properties, and photocatalytic activity of the
nanocrystalline TiO₂ particles with thermal stability will be investigated. Due to this
research, five characteristic techniques applied for the characteristic the
photocatalytic coating of TiO2 thin films such as X-ray Diffraction (XRD), Atomic
Force Microscoe (AFM), Transmission Electron Microscopy (TEM) and Brunner-
Emmet-Teller (BET) surface area. Adhesion of TiO2 thin films become smooth and
better surface while increasing the coating layers. Besides that, the films structure of
TiO2 thin films produced high anatase peak while increase the coating layer over the
five layers coating and the increasing the PEG molecular weight. From the other
view, this research will provide the investigation of new nanotechnology product
development of high efficient photocatalytic TiO₂ particles films that will be used in
the self cleaning and disinfection application. |
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