Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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pH Dependence on the Degradation of Rhodamine B by Fe-ACF/$TiO_2$ Composites and Effect of Different Fe Precursors

Fe-ACF/$TiO_2$ 복합체에 의한 로다민 B 용액의 분해에 있어서 pH 의존성 및 여러 가지 Fe 전구체의 효과

  • Zhang, Kan (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Oh, Won-Chun (Department of Advanced Materials & Science Engineering, Hanseo University)
  • 장간 (한서대학교 신소재공학과) ;
  • 오원춘 (한서대학교 신소재공학과)
  • Published : 2009.12.31
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Abstract

Iron-loaded activated carbon fibers (Fe-ACF) supported titanium dioxide ($TiO_2$) photocatalyst (Fe-ACF/$TiO_2$) was synthesized using a sol-gel method. Three different types of Fe-ACF/$TiO_2$ were obtained by treatment with different precursor of Fe, and characterized using BET, SEM, XRD and EDX analysis. The photocatalytic activity of Fe-ACF/$TiO_2$ was investigated by the degradation of Rhodamine B (Rh.B) solution under UV irradiation. From the experimental results, it was revealed that Fe-ACF/$TiO_2$ composites show considerable photocatalytic ability for the removal of Rh.B by comparing non-treated ACF/$TiO_2$ composites. And photo-Fenton reaction with Fe element was incoordinately influenced due to different precursor of Fe. It clearly indicates that Fe-ACF/$TiO_2$ composites prepared using $FeCl_3$ provided the highest photo-Fenton activity, then, which was affected by pH changes on the degradation of Rh.B.

졸-겔 방법을 사용하여 Fe-ACF/$TiO_2$ 복합체 광촉매를 제조하였다. 여러 가지 철 전구체를 사용하여 세가지 Fe-ACF/$TiO_2$ 복합체를 제조하고 BET, SEM, XRD 및 EDX를 사용하여 특성화 하였다. UV 조사에서 Rh.B 용액의 분해에 의거하여 Fe-ACF/$TiO_2$ 복합체의 광촉매 특성을 파악 하였다. 실험 결과로부터, Fe-ACF/$TiO_2$ 복합체는 ACF/$TiO_2$ 복합체 보다 Rh.B의 제거 효과가 더 우수함을 나타내었다. 또한 여러 가지 Fe 전구체 사용으로 인한 Fe 원소의 포토-펜톤 효과는 다르게 나타났다. $FeCl_3$을 사용하여 제조된 Fe-ACF/$TiO_2$ 복합체는 가장 우수한 포토-펜톤 효과를 나타내었고, pH 변화에 의존하여 Rh.B 용액 분해에 대하여 영향을 주었다.

Keywords

References

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