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Title: Immobilization of TiO2 with cement: Photocatalytic degradation of phenol and its kinetic studies
Authors: Sopyan, Iis
Hafizah, Nor
Jamal, Parveen
Keywords: Sol-gel
TiO2 photocatalyst
Phenol solution
Kinetic studies
Issue Date: Jul-2011
Publisher: NISCAIR-CSIR, India
Abstract: Two types of TiO2 powders with water-to-titanium tetraisopropoxide (TPT) ratios of 1 (Powder 1) and 2 (Powder 2) were synthesized via sol-gel method. Both powders were characterized physicochemically before immobilized with white plaster cement for photodegradation of phenol in liquid phase. Aqueous phenol solution containing cement-bonded of TiO2 Powders 1 and 2 were irradiated with UV light of 2.6 mW/cm2 intensity and their efficiency was compared using Langmuir-Hinshelwood kinetic model. From the kinetic analysis, it was found that the adsorption equilibrium constant (KLH) of Powder 1 was higher than that of Powder 2 due to higher specific surface area. Powder 2 has higher value of the reaction rate constant (kr) as its high crystallinity was capable to generate better charge separation to destruct phenol molecules on its surface.
Description: 263-270
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.18(4) [July 2011]

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