alexa Efficient Visible Light Active Nanostructured Tio2 (Cor


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Research Article

Efficient Visible Light Active Nanostructured Tio2 (Core)-Polyaniline (Shell) Photocatalyst for Simultaneously Removing Of Cooking Oil Fumes

Bao Lin and Shu-Liang Liaw
Graduate Institute of Environmental Engineering, National Central University 300 Jhongda Road, Jhongli, Taoyuan, Taiwan
Corresponding Author: Bao Lin, Graduate Institute of Environmental Engineering, National Central University 300 Jhongda Road, Jhongli, Taoyuan, Taiwan Email: [email protected] Tel: +886-2772-0922; Fax: +886-2550-8047
Received: 4th Jan-2016 Revised: 18th Jan 2016 Accepted: 20th Jan 2016
Copyright: © 2016 Bao Lin. This is an open-access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided
the original author and source are credited
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Abstract

Cooking oil fumes (COFs) deteriorate indoor air quality. Therefore, in this study, a nanostructured TiO2 core–porous polyaniline shell (TP) nanocomposite was developed for vapor-phase photocatalytic degradation of volatile organic compounds (VOCs) from COFs. A PANI shell coated uniformly on the surface of the TiO2 core was prepared through a double–surfactant-assisted polymerization method. The PANI shell thickness, morphology characterizations and specific surface area were controlled by altering the weight ratio of aniline monomer to TiO2 (AT ratio). Under the illumination of ultraviolet-visible light, the TP nanocomposite exhibited higher photocatalytic activity than did pure TiO2 because of the charge-separation and charge-transfer processes from TiO2 to PANI shell as well as the high specific surface area induced by the reduced aggregation states of the TiO2 nanoparticles. Under the characteristic AT ratio of 2.5, The TP nanocomposite containing the nanoporous PANI shell that was coated on the TiO2 nanoparticle core continuously treated the COFs, demonstrating a VOC removal efficiency of approximately 80% and mineralization efficiency of approximately 46 %; the thermal tolerance was as high as 125°C.

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