Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Microstrictire-property-processing relationship in highly active $TiO_2$ photocatalysts prepared by the sol-gel method

솔젤법으로 제조된 고활성 $TiO_2$ 광촉매에서 미세구조-물성-공정조건의 상관성

  • Shin, Hyun-Ki (Division of Ceramic and Chemical Engineering, Myong Ji University) ;
  • Kim, Hern (Division of Ceramic and Chemical Engineering, Myong Ji University)
  • 신현기 (명지대학교 세라믹 화학공학부) ;
  • 김헌 (명지대학교 세라믹 화학공학부)
  • Published : 1999.10.01
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Abstract

$TiO_2$ Powders were prepared by sol-gel method to testify the characteristics as the photocatalysts. The relationship between processing conditions (R-value (molar ratio of water to alkoxide)), heat treatment temperature, microstructures (crystalline phases), and properties (surface area, particle size) was examined. The optimal conditionsto improve the activity of photocatalyst for photobleaching of dyes in aqueous solution, Were determined.

솔젤법을 사용하여 광촉매 $TiO_2$ 분말체를 제조하였으며 제조조건으로서 R값(물/알콕사이드 몰비), 열처리 온도, 미세구조로서 결정상, 물성으로서 비표면적과 입자크기의 상관관계를 조사하였으며 기능성으로 수용액상 염료의 광표백반응에 적용하여 광분해능을 극대화하기 위한 최적조건을 결정하였다.

Keywords

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