Preparation of Co-ACFs/TiO2 composites and its photodegradation of methylene blue

국문 초록 (Abstract)

코발트 적재된 활성탄소섬유(ACFs)는 이산화티탄(TiO₂) 광촉매 반응을 촉진시키는 것을 발전되었다. Co-ACFs/TiO₂ 광촉매는 SEM, XRD, EDX 및 UV-vis 분광기를 사용하여 분석하였다. Co-ACFs/TiO₂ 광촉매에 대한 메틸렌불루(MB)의 분해 효과는 300분 반응해서 거의 100%를 도달하였다. 용액에 있는 MB 분자들은 ACFs의 흡착 에 의해 TiO₂ 입자의 주위에 응축한다고 가정되었다. 그래서 이 광촉매 복합체는 MB 광분해에 대한 활성탄의 흡착 성과 TiO₂의 광촉매 특성의 결합한 성능을 가지고 있다. 코발트가 전자 천이 효과를 가지고 있기 때문에 MB 용액 의 광분해가 증가되는 것으로 판단된다.

다국어 초록 (Multilingual Abstract)

Cobalt-loaded activated carbon fibers (ACFs) supported titanium dioxide (TiO₂) photocatalyst was developed by sol-gel method. The Co-ACFs/TiO₂ 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/TiO₂ photocatalyst reached almost 100% under 300 min reaction. The MB molecules in the bulk solutions were supposed to be condensed around TiO₂ particles by adsorption of ACFs. Therefore, the photocatalyst possesses the combined effect of adsorption by activated carbon fibers and photocatalytic reactivity of TiO₂ on MB degradation. Due to the cobalt has electron transition effece, thus improved the photodegradation of MB solution.

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