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Phtocatalytic Activity of the $SrBi_2Nb_2O_9$ Thick Film by Aerosol Deposition  

Kim, Ji-Ho (Department of Material Science & Engineering, Han-Yang Univ.)
Choi, Duck-Kyun (Department of Material Science & Engineering, Han-Yang Univ.)
Hwang, Kwang-Taek (Korea Institute of Ceramic Engineering & Technology)
Ko, Sang-Min (Korea Institute of Ceramic Engineering & Technology)
Cho, Woo-Seok (Korea Institute of Ceramic Engineering & Technology)
Kim, Jin-Ho (Korea Institute of Ceramic Engineering & Technology)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.21, no.5, 2010 , pp. 375-382 More about this Journal
Abstract
A layered perovskite photocatalysts, $SrBi_2Nb_2O_9$ (SBN), was synthesized by the conventional solid-state reaction method and characterized by X-ray diffraction (XRD) and UV-visble spectrophotometry. The results showed that the structure of $SrBi_2Nb_2O_9$ is orthorhombic. Diffuse reflectance spectra for calcined and attrition-milled SBN showed the main absorption edges were less 400 nm, that is ultraviolet region. SBN under micron-sized powder was deposited on the $Al_2O_3$ by room temperature powder spray in vacuum process, so called aerosol deposition (AD), and nano-grained $SrBi_2Nb_2O_9$ photocatalytic thick film was fabricated. AD-deposited SBN thick films were characterized by XRD, scanning electron microscopy (SEM) and UV-visable spectrophotometry, Moreover, it was found that several nano-sized SBN film by AD process can improve the photocatalytic activity under visable reflectance.
Keywords
Photocatalyst; Aerosol deposition; Perovskite oxide; $SrBi_2Nb_2O_9$; Water splitting;
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Times Cited By KSCI : 3  (Citation Analysis)
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