Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Characterization of Fe-ACF/$TiO_2$ composite Photocatalysts Effect Via Degradation of MB Solution

Fe-ACF/$TiO_2$ 복합체의 특성과 MB용액의 분해에서 포토-펜톤 효과

  • Zhang, Kan (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Meng, Ze-Da (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Ko, Weon-Bae (Department of Chemistry, Sahmyook University) ;
  • Oh, Won-Chun (Department of Advanced Materials & Science Engineering, Hanseo University)
  • 장간 (한서대학교 신소재공학과) ;
  • 맹칙달 (한서대학교 신소재공학과) ;
  • 고원배 (삼육대학교 화학과) ;
  • 오원춘 (한서대학교 신소재공학과)
  • Published : 2009.09.30
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Abstract

In this paper, the Fe-activated carbon fiber (ACF)/$TiO_2$ composite catalysts were prepared by a sol-gel method. The synthesized photocatalysts were used for the photo degradation of Methylene blue solution under UV light. From Brunauer-Emmett-Teller measurements (BET) data, it was shown the blocking of the micropores on the surface of ACF by treatment of Fe and Ti compound. As shown in SEM images, the ferric compounds and titanium dioxides were fixed onto the ACF surfaces. The result of X-ray powder diffraction showed that the crystal phase contained a mixing anatase and rutile structure and the 'FeO+$TiO_2$' from the composites. The EDX spectra for the elemental analysis showed the presence of C, O, and Ti with Fe peaks. Degradation activity of MB could be attributed to +OH radicals derived from electron/hole pair's reactions due to photolysis of $TiO_2$ and photo-Fenton effect of Fe.

본 논문에서 Fe-활성탄소 섬유(ACF)/$TiO_2$ 복합체 광촉매를 졸-겔 방법에 의하여 제조하였다. 합성된 광촉매는 UV조사하에서 MB용액의 광분해에 사용되었다. BET 데이터는 Fe와 Ti의 여러 가지 농도를 가지고 처리된 ACF의 표면에서 흡착 특성을 보여준다. SEM 사진에서 보여지는 것처럼, 철 혼합물과 $TiO_2$는 ACF 표면에 활착되어 있음을 나타내었다. X선 분말 회절법으로부터 얻어진 결과는 복합체로부터 FeO+$TiO_2$, Anatase 및 Rutile 구조의 결정상을 나타내었다. 원소분석을 위한 EDX spectra는 Fe와 함께 C, O, Ti의 peak들이 존재함을 나타내었다. MB 분해에 대한 활성은 $TiO_2$의 광분해와 Fe의 photo-Fenton 효과로 인해 전자/hole쌍 반응으로부터 파생된 -OH 라디칼들에 의한 것으로 여겨진다.

Keywords

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