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Photocatalytic Activities of Titania Deposited Beads by FB-CVD as Operation Variables  

Lim, Nam-Yun (Clean Energy System Research Center, Korea Institute of Energy Research)
Lee, Seung Yong (Clean Energy System Research Center, Korea Institute of Energy Research)
Park, Jaehyeon (Clean Energy System Research Center, Korea Institute of Energy Research)
Kwak, Jini (Department of Material Engineering, Korea University of Technology and Education)
Park, Hai Woong (Department of Material Engineering, Korea University of Technology and Education)
Publication Information
Korean Chemical Engineering Research / v.44, no.3, 2006 , pp. 300-306 More about this Journal
Abstract
Photocatalyst deposited beads were prepared by fluidized bed chemical vapor deposition (FB-CVD) under various operating conditions of substrates, bed temperature, pressure, and oxygen concentration. Photocatalytic degradation of acetaldehyde was carried out to determine the optimum operating condition of prepared photocatalysts. They were characterized by using FE-SEM, XRD, and XPS. From the FE-SEM photographs, it was found that the surfaces of titania-coated beads were covered with crystal form, particle form, and slick form of titania on alumina, silica-gel, and glass beads, respectively. From the result of photocatalytic degradation of acetaldehyde, it was found that prepared titania/ alumina beads at $600^{\circ}C$, 5 torr showed superior performance to others, and oxygen flow rate has no significant effect.
Keywords
Photocatalysts; Titania ($TiO_2$); Chemical Vapor Deposition; Fluidized Bed; Acetaldehyde;
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Times Cited By KSCI : 1  (Citation Analysis)
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