Photocatalytic Activity of TiO2 Coated on HZSM-5 Prepared by Oxalic Acid Treatment

Wen Jie Zhang; Jin Lei Chen; Hong Bo He

doi:10.4028/www.scientific.net/AMR.424-425.633

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 424-425Photocatalytic Activity of TiO2 Coated on HZSM-5...

Photocatalytic Activity of TiO₂ Coated on HZSM-5 Prepared by Oxalic Acid Treatment

Abstract:

Zeolite HZSM-5 was pre-treated by oxalic acid and used as support for TiO₂ film prepared by sol-gel method. Decoloration rates increased with TiO₂ concentration both for pure TiO₂ and TiO₂/HZSM-5. Meanwhile, the total decoloration rate on TiO₂/HZSM-5 is much higher than using pure TiO₂ on all TiO₂ concentrations. Methyl orange degradation on TiO₂/HZSM-5 reached its maximum value at TiO₂ concentration of 600 mg/l. After 120 min of irradiation, decoloration rate on TiO₂/HZSM-5 was near 100%, compared with 50% decoloration on pure TiO₂. Photocatalytic degradation of methyl orange on both TiO₂/HZSM-5 and TiO₂ follows the equation of first order reaction. Kinetic constant on TiO₂/HZSM-5 is k₁=0.02663 min^-1, which is much higher than that on pure TiO₂, k₂=0.010154 min^-1.

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Periodical:

Advanced Materials Research (Volumes 424-425)

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633-636

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.424-425.633

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Online since:

January 2012

Authors:

Wen Jie Zhang, Jin Lei Chen, Hong Bo He

Keywords:

HZSM-5, Oxalic Acid, Photocatalysis, TiO₂

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