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Vol. 27 No. 1 (2015): Vol 27 Issue 1

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Effects of Operating Parameters on Photocatalytic Degradation of Methylene Blue or Phenol on Supported Titanium-Based Catalysts

https://doi.org/10.14233/ajchem.2015.17758
Abdulfatah S. Muhammad
Department of Chemistry Bayero University, P.M.B. 3011, Kano, Nigeria
Jamil T. Naser
Petroleum and Chemical Engineering Department, Sultan Qaboos University, P.O. Box 33, Al Khoud, PC 123, Muscat, Oman
Ilham Kirm
Petroleum and Chemical Engineering Department, Sultan Qaboos University, P.O. Box 33, Al Khoud, PC 123, Muscat, Oman
Baba Y. Jibril
Petroleum and Chemical Engineering Department, Sultan Qaboos University, P.O. Box 33, Al Khoud, PC 123, Muscat, Oman

Corresponding Author(s) : Jamil T. Naser

naserj@squ.edu.om

Asian Journal of Chemistry, Vol. 27 No. 1 (2015): Vol 27 Issue 1

Abstract

Photocatalytic decompositions of both methylene blue and phenol in aqueous solutions were conducted separately on titanium-based catalysts. The catalysts were prepared using impregnation method on different supports (SiO2, Al2O3 or ZSM-5) and titanium precursors (TiO2 or TiCl4). They were tested in visible light or UV irradiations of different wavelengths (254 and 365 nm). The physico-chemical characteristics of the catalysts were obtained using BET, XRD, FTIR and TGA. The supports surface areas and porosities showed insignificant decreased after impregnation with the active components. The diffraction patterns showed strong peaks that are assigned to titania anatase phase and weaker peak that indicated low concentration of rutile phase. Irrespective of the support, FTIR showed broad peaks of Ti-O-Ti linkages in TiO2 particles. The catalysts were found to be active in decomposition of either methylene blue or phenol from aqueous solutions. For both methylene blue and phenol, the removal trend is TiO2/SiO2<TiO2/Al2O3<<TiO2/ZSM-5.

Keywords

Phenol Methylene blue Photocataysis Titania Precursors Supports
S. Muhammad, A., T. Naser, J., Kirm, I., & Y. Jibril, B. (2014). Effects of Operating Parameters on Photocatalytic Degradation of Methylene Blue or Phenol on Supported Titanium-Based Catalysts. Asian Journal of Chemistry, 27(1), 313–320. https://doi.org/10.14233/ajchem.2015.17758
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