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Laponite-supported titania photocatalysts

Daniel, Lisa Maree (2007) Laponite-supported titania photocatalysts. .

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Abstract

This thesis describes the synthesis and characterisation of titania photocatalysts for incorporation into a polyethylene film. Monodisperse, anatase-phase titania nanoparticles are prepared and the synthesis conditions necessary for attraction to a laponite clay support are determined. Methods of preventing agglomeration of the laponite system such as the use of a polyethylene oxide surfactant or chemical modification of the laponite plate edges with a dimethyloctyl methoxysilane are also explored. Finally, photocatalytic studies on the laponite-supported titania nanoparticles are performed, and the compatibility and photoactivity of these materials in the polyethylene film are examined.

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ID Code: 16669
Item Type: QUT Thesis (Masters by Research)
Supervisor: Frost, Raymond& Zhu, Huai
Keywords: Titania, titanium dioxide, anatase, photoactivity, photocatalyst, clay, colloid, hydrothermal treatment, laponite, surfactant, silane, silylation, edge-modification, X-ray diffraction, polymer degradation, transmission electron microscopy, infrared emission spectroscopy, attenuated total reflectance infrared spectroscopy, BET N2 sorption, thermogravimetric analysis, 29Si Nuclear magnetic Resonance Spectroscopy
Department: Faculty of Science
Institution: Queensland University of Technology
Copyright Owner: Copyright Lisa Maree Daniel
Deposited On: 03 Dec 2008 14:08
Last Modified: 29 Oct 2011 05:50

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