Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Phtocatalytic Activity of the $SrBi_2Nb_2O_9$ Thick Film by Aerosol Deposition

Aerosol deposition을 이용한 $SrBi_2Nb_2O_9$의 고정화에 의한 광촉매 특성에 관한 연구

  • 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)
  • Received : 2010.07.29
  • Accepted : 2010.10.20
  • Published : 2010.10.31
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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

References

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