Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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UV Blocking Effect of $TiO_2/SiO_2$ Composite Powders Prepared by Ultrasonic Spray Pyrolysis

초음파 분사 열분해 장치에서 제조된 $TiO_2/SiO_2$ 복합 분체의 UV 차단 효과

  • Lee, Dong-Kyu (Department of Industrial Chemistry, College of Engineering, Chungbuk National University) ;
  • Lee, Jin-Hwa (Department of Industrial Chemistry, College of Engineering, Chungbuk National University) ;
  • Kim, Dong-Sik (Korea Institute of Energy Research)
  • 이동규 (충북대학교 공과대학 공업화학과) ;
  • 이진화 (충북대학교 공과대학 공업화학과) ;
  • 김동식 (한국에너지기술연구원)
  • Published : 2005.09.30
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Abstract

The silica nanoparticles were used as support of catalyst, filling material, electronic assembler, thin film material, and sensor material. And, the titania nanoparticles were used as pigment, dielectric substance, sensor and photocatalyst. In this paper, the spherical composite particles of $TiO_2/SiO_2$with narrow size distribution and phase pure were synthesized by ultrasonic spray pyrolysis method from $TiOSO_4$ and colloidal silica solution. Using ultrasonic apparatus, this starting solution was vaporized to droplets, and these droplets were induced into tube furnace by carrier gas. The resulting composite powder was characterized by scanning electron microscopy, X-ray diffraction analysis, TG-DTA, in vitro sun protection factor(SPF) and BET surface area analysis.

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References

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