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Vol. 26 No. 6 (2014): Vol 26 Issue 6

Copyright (c) 2014 AJC

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Photocatalysis of Vaporous Organic Pollutants Using Bead-Shaped Titania Grown on Carbon Fiber

https://doi.org/10.14233/ajchem.2014.17298
Joon Yeob Lee
Department of Environmental Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea
Wan-Kuen Jo
Department of Environmental Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea

Corresponding Author(s) : Wan-Kuen Jo

wkjo@knu.ac.kr

Asian Journal of Chemistry, Vol. 26 No. 6 (2014): Vol 26 Issue 6

Abstract

This study was performed to examine the photocatalytic activities of titanium dioxide (TiO2) grown on carbon fiber sheet (TiO2-CFS) for purification of air-phase benzene, toluene, ethyl benzene and o-xylene (BTEX) under different experimental conditions. The SEM images displayed that TiO2 could be embedded into the surface of a support CFS by applying a simple hydrothermal technique followed by a calcination process. The XRD results demonstrated that TiO2 impregnated into CFSs had a photocatalytic function similar to that of TiO2. The removal efficiencies of BTEX determined via the TiO2-CFSs were all higher than those determined via uncalcined CFS. In addition, the removal efficiencies of BTEX determined via three TiO2-CFSs with high amount of TiO2 imbedded into CFSs were all higher than those determined via uncalcined or calcined CFS. Meanwhile, the removal efficiencies of ethyl benzene and o-xylene determined via the TiO2-CFS with a low amount of embedded TiO2 were lower than those determined via calcined CFS. As the amount of tetrabutyl titanate used for the preparation of TiO2-CFSs increased from 2.5 to 6.0 mL, the average removal efficiencies of BTEX increased from 19 to 68 %, 34 to 75 %, 35 to 83 % and 46 to 87 %, respectively. The conditions of high amount of Ti precursor within the range used in the present study, low air flow rates conditions were preferred for decomposition of airborne BTEX. Overall, TiO2-CFSs could be applied effectively for removal of environmental pollutants, when the amount of Ti precursor was properly chosen for their preparation.

Keywords

Carbon fiber sheet Hydrothermal process Calcination
Yeob Lee, J., & Jo, W.-K. (2014). Photocatalysis of Vaporous Organic Pollutants Using Bead-Shaped Titania Grown on Carbon Fiber. Asian Journal of Chemistry, 26(6), 1599–1603. https://doi.org/10.14233/ajchem.2014.17298
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