Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Photocatalytic Properties of TiO2 According to Manufacturing Method

제조방법에 따른 TiO2의 광촉매 특성 분석

  • Lee, Hong Joo (Department of Chemical and Biochemical Engineering, Dongguk University) ;
  • Park, Yu Gang (Department of Chemical and Biochemical Engineering, Dongguk University) ;
  • Lee, Seung Hwan (Department of Chemical and Biochemical Engineering, Dongguk University) ;
  • Park, Jung Hoon (Department of Chemical and Biochemical Engineering, Dongguk University)
  • 이홍주 (동국대학교 화공생물공학과) ;
  • 박유강 (동국대학교 화공생물공학과) ;
  • 이승환 (동국대학교 화공생물공학과) ;
  • 박정훈 (동국대학교 화공생물공학과)
  • Received : 2017.11.08
  • Accepted : 2017.12.15
  • Published : 2018.04.01
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Abstract

$TiO_2$ photocatalyst powders were prepared by chlorination method and sol-gel method. Specific surface area and crystalline (i.e., anatase and rutile) of the catalyst varied depending on manufacture conditions and method. TTIP-sol photocatalyst had higher methylene blue (MB) decomposition characteristics than photocatalyst from chlorination method and TBOT-sol. MB removal efficiency from aqueous solution with TTIP-sol photocatalyst was over 90%. Experimental results showed that the $TiO_2$ photocatalyst with a single anatase phase and a large specific surface area had high decomposition characteristics of organic materials.

염소법과 졸-겔법으로 $TiO_2$ 광촉매 분말을 제조하였다. 제조방법 및 조건에 따라 촉매의 결정상 형태(아나타제와 루타일)와 비표면적이 변화하는 것을 알 수 있었다. TTIP-sol로 제조한 광촉매가 염소법이나 TBOT-sol로 제조한 광촉매에 비해 methylene blue (MB) 분해 특성이 더 높았으며, 수용액상의 90% 이상의 MB를 제거할 수 있었다. 실험 결과를 통해 $TiO_2$ 광촉매는 단일 아나타제상와 큰 비표면적을 가지면 유기물 분해 특성을 향상될 수 있는 것을 확인하였다.

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References

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