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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.18 [2011] >
IJCT Vol.18(4) [July 2011] >
| 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
Cement-bonded
Phenol solution
Kinetic studies
Langmuir-Hinshelwood |
| 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. |
| Page(s): | 263-270 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.18(4) [July 2011]
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