한국분말재료학회지 (Journal of Powder Materials)

  • 제25권3호
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  • Pages.257-262
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  • 2018
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
권호 표지
DOI QR코드

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계면활성제를 이용하여 anatase TiO2 나노 입자와 결합된 rutile TiO2 분말의 광촉매 특성

Photocatalytic activity of rutile TiO2 powders coupled with anatase TiO2 nanoparticles using surfactant

  • 변종민 (서울과학기술대학교 신소재공학과) ;
  • 박천웅 (한양대학교 신소재공학과) ;
  • 김영인 (한양대학교 신소재공학과) ;
  • 김영도 (한양대학교 신소재공학과)
  • Byun, Jong Min (Department of Materials Science and Engineering, Seoul National University of Science and Technology) ;
  • Park, Chun Woong (Department of Materials Science and Engineering, Hanyang University) ;
  • Kim, Young In (Department of Materials Science and Engineering, Hanyang University) ;
  • Kim, Young Do (Department of Materials Science and Engineering, Hanyang University)
  • 투고 : 2018.06.11
  • 심사 : 2018.06.19
  • 발행 : 2018.06.28
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초록

The coupling of two semiconducting materials is an efficient method to improve photocatalytic activity via the suppression of recombination of electron-hole pairs. In particular, the coupling between two different phases of $TiO_2$, i.e., anatase and rutile, is particularly attractive for photocatalytic activity improvement of rutile $TiO_2$ because these coupled $TiO_2$ powders can retain the benefits of $TiO_2$, one of the best photocatalysts. In this study, anatase $TiO_2$ nanoparticles are synthesized and coupled on the surface of rutile $TiO_2$ powders using a microemulsion method and heat treatment. Triton X-100, as a surfactant, is used to suppress the aggregation of anatase $TiO_2$ nanoparticles and disperse anatase $TiO_2$ nanoparticles uniformly on the surface of rutile $TiO_2$ powders. Rutile $TiO_2$ powders coupled with anatase $TiO_2$ nanoparticles are successfully prepared. Additionally, we compare the photocatalytic activity of these rutile-anatase coupled $TiO_2$ powders under ultraviolet (UV) light and demonstrate that the reason for the improvement of photocatalytic activity is microstructural.

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