Study on the Photocatalytic Efficiencies of $TiO_2$

$TiO_2$의 광촉매 효율성에 관한 연구

  • Lee, J.H. (Dept. of Chemistry, Hanseo University) ;
  • Oh, H.J. (Dept. of Materials Engineering, Hanseo University) ;
  • Jang, J.M. (School of Metallurgical and Materials Engineering, Kookmin University) ;
  • Chi, C.S. (School of Metallurgical and Materials Engineering, Kookmin University)
  • 이종호 (한서대학교 화학과) ;
  • 오한준 (한서대학교 재료공학과) ;
  • 장재명 (국민대학교 금속재료공학부) ;
  • 지충수 (국민대학교 금속재료공학부)
  • Received : 2000.10.20
  • Published : 2001.02.25


Photocatalytic $TiO_2$ films were prepared by anodic oxidation at 180 V and their structural difference caused by oxidation conditions was studies. The microstructure of $TiO_2$ films in $H_2SO_4$ and $H_2SO_4/H_2O_2$ solution was mixed type of rutile and anatase. However, the $TiO_2$ layer formed in $H_2SO_4/H_3PO_4$ and $H_2SO_4/H_3PO_4/H_2O_2$ mixture was mostly anatase type. All $TiO_2$ films prepared by anodic oxidation exhibited photocatalytic properties. The photocatalytic degradation of aniline blue was first order reaction with similar rate constants at all oxidative conditions examined in this work.


$TiO_2$;photocatalyst;anatase;aniline blue;order of reaction


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