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Article – Journal of Nanoscience and Technology

Journal of Nanoscience and Technology, Volume 5,Issue 4,2019 Pages 791-792

Synthesis and Photocatalytic Studies of TiO2-CdS Nanocomposite
Bindu Krishnan*, Athira R. Menon


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Considering the importance of photo catalytic oxidation of organic pollutants by semiconductors using sunlight, in the present study, we prepared and studied CdS-TiO2 nanocomposite. The commonly used photocatalyst TiO2 as such has the drawback that it uses only the UV portion of sunlight. The CdS-TiO2 composite was prepared by a modified sol-gel method. The structure and optical properties were studied by means of XRD, TEM and UV-visible spectroscopy. The composite was tested for their photocatalytic efficiency by the time taken for the degradation of the dye methyl orange under illumination of by absorption spectroscopy of samples extracted at different time intervals. It is found that CdS-TiO2 is more efficient as a photocatalyst than pure TiO2.This is due to better absorption of light in the visible range.

Keywords: Photocatalysis; TiO2; CdS; Nanocomposites;

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