Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Preparation of CdS-AC/TiO2 Composites Designed for a High Photonic Effect and their Photocatalytic Activity Under Visible Light

  • Park, Chong-Yeon (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Choi, Jong-Geun (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Ghosh, Trisha (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Oh, Won-Chun (Department of Advanced Materials & Science Engineering, Hanseo University)
  • Received : 2011.05.03
  • Accepted : 2011.08.19
  • Published : 2011.09.30
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Abstract

In this study, CdS combined activated carbon/$TiO_2$ (CdS-AC/$TiO_2$) composites were prepared by a sol-gel method to improve the photocatalytic performance of $TiO_2$. These composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and UV-vis analysis. The photocatalytic activities were examined by the degradation of methylene blue (MB) under visible light irradiation. The photodegradation rate of MB under visible light irradiation reached 90.1% in 120 min. The kinetics of MB degradation was plotted alongside the values calculated from the Langmuir-Hinshelwood equation. The 0.2 CAT sample showed the best photocatalytic activity, which might be due to an increase in the photo-absorption effect by activated carbon and the cooperative effect of CdS.

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References

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