한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제23권2호
  • /
  • Pages.153-159
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  • 2006
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  • 1225-9098(pISSN)
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  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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TiO$_2$가 담지된 활성탄을 이용한 Methylene Blue의 광분해

Photocatalytic Degradation of Methylene Blue using $TiO_2$ Supported on Activated Carbon

  • 이종대 (충북대학교 공과대학 화학공학과) ;
  • 이태준 (충북대학교 공과대학 화학공학과) ;
  • 조경태 (충북대학교 공과대학 화학공학과)
  • Lee, Jong-Dae (Dept. of Chemical Engineering, Chungbuk National University) ;
  • Lee, Tae-Jun (Dept. of Chemical Engineering, Chungbuk National University) ;
  • Cho, Kyong-Tae (Dept. of Chemical Engineering, Chungbuk National University)
  • 발행 : 2006.06.30
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초록

The photocatalytic degradation of methylene blue(MB) was investigated using $TiO_2$ as photocatalyst and UV radiation. $TiO_2$ supported with activated carbon(AC) was prepared by SOL-GEL method and depended on several parameters such as the mass ratio of $TiO_2/AC$, pH and experimental time. The presence of the anatase and rutile crystal phase was determined by XRD analyses of the prepared $TiO_2$. The degradation of MB with $TiO_2/AC$ was about 20% higher than that of AC alone. A variation of photodegradation was negligible under UV radiation conditions ( ${\geq}$ 40W). It was experimentally showed that the photodegradation rate was increased with increasing the amount of photocatalyst. The optimal catalyst was prepared by impregmation of $5wt%-TiO_2$ with AC and was calcined at $300^{\circ}C$, and showed about 99% removal efficiency for 3hrs.

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