Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Photocatalytic Properties of TiO2 Nanopowder Synthesized by Chemical Vapor Condensation Process

화학기상응축 공정으로 제조한 TiO2 나노분말의 광촉매 특성

  • 임성순 (한양대학교 재료화학공학부 나노입자재료기술연구실(NRL)) ;
  • 남희영 (한양대학교 재료화학공학부 나노입자재료기술연구실(NRL)) ;
  • 윤성희 (한양대학교 재료화학공학부 나노입자재료기술연구실(NRL)) ;
  • 이창우 (한양대학교 재료화학공학부 나노입자재료기술연구실(NRL)) ;
  • 유지훈 (한양대학교 재료화학공학부 나노입자재료기술연구실(NRL)) ;
  • 이재성 (한양대학교 재료화학공학부 나노입자재료기술연구실(NRL))
  • Published : 2003.04.01
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Abstract

$TiO_2$ nanopowder was synthesized by chemical vapor condensation (CVC) process and its photocatalytic property depending on microstructure was considered in terns of decomposition rate of organic compound. In order to control microstructure of $TiO_2$ nanopowder such as particle size and degree of agglomeration, precursor flow rate representing number concentration was changed as a process variable. In TEM observation, spherical $TiO_2$ nanoparticles with average size of 20 nm showed gradual increases in particle size and degree of agglomeration with increase of precursor flow rate. Also decomposition rate of organic compound increased with decreasing precursor flow rate. Thus, it was concluded that photocatalytic property was enhanced by targe surface area of disperse $TiO_2$ nanoparticles synthesized at lower precursor flow rate condition in CVC process.

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