Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Preparation of Co-ACFs/TiO2 composites and its photodegradation of methylene blue

Co-ACFs/TiO2 복합체의 제조 및 그의 메틸렌블루의 광분해

  • Oh, Won-Chun (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Kwon, Ho-Jung (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Chen, Ming-Liang (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Zhang, Feng-Jun (Department of Advanced Materials & Science Engineering, Hanseo University)
  • 오원춘 (한서대학교 신소재공학과) ;
  • 권호정 (한서대학교 신소재공학과) ;
  • 진명량 (한서대학교 신소재공학과) ;
  • 장봉군 (한서대학교 신소재공학과)
  • Published : 2009.11.30
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Abstract

Cobalt-loaded activated carbon fibers (ACFs) supported titanium dioxide ($TiO_2$) photocatalyst was developed by sol-gel method. The Co-ACFs/$TiO_2$ photocatalyst were characterized by scanning electron microscope (SEM), X.ray diffraction patterns (XRD), energy dispersive X.ray analysis (EDX) and UV-vis absorption spectroscopy. Decomposition efficiency of methylene blue (MB) solution by Co-ACFs/$TiO_2$ photocatalyst reached almost 100% under 300 min reaction. The MB molecules in the bulk solutions were supposed to be condensed around $TiO_2$ particles by adsorption of ACFs. Therefore, the photocatalyst possesses the combined effect of adsorption by activated carbon fibers and photocatalytic reactivity of $TiO_2$ on MB degradation. Due to the cobalt has electron transition effece, thus improved the photodegradation of MB solution.

코발트 적재된 활성탄소섬유(ACFs)는 이산화티탄($TiO_2$) 광촉매 반응을 촉진시키는 것을 발전되었다. Co-ACFs/$TiO_2$ 광촉매는 SEM, XRD, EDX 및 UV-vis 분광기를 사용하여 분석하였다. Co-ACFs/$TiO_2$ 광촉매에 대한 메틸렌불루(MB)의 분해 효과는 300분 반응해서 거의 100%를 도달하였다. 용액에 있는 MB 분자들은 ACFs의 흡착에 의해 $TiO_2$ 입자의 주위에 응축한다고 가정되었다. 그래서 이 광촉매 복합체는 MB 광분해에 대한 활성탄의 흡착성과 $TiO_2$의 광촉매 특성의 결합한 성능을 가지고 있다. 코발트가 전자 천이 효과를 가지고 있기 때문에 MB 용액의 광분해가 증가되는 것으로 판단된다.

Keywords

References

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