INCORPORATION OF CDS NANOPARTICLES INTO PMMA MATRIX AND THEIR PHOTOCATALYTIC RESPONSE AGAINST METHYLENE BLUE
Main Article Content
Keywords
Poly methyl methacrylate, Photocatalysis, Methylene blue, Band gap energy
Abstract
Thin films of cadmium sulphide/poly methyl methacrylate (CdS/PMMA) were synthesized by the using solution casting method. This method was used due to the hydrophilic and hydrophobic compatibility of metal sulphide with PMMA matrix. The fabricated films were characterized by using X-ray diffraction (XRD), Fourier-transform infrared (FTIR) and Ultraviolet-visible (UV-Vis) spectroscopy. The photocatalytic activity of these films was carried out by using methylene blue solution as a water pollutant. Results revealed that as the content of CdS was increased in the polymer matrix, the band gap values became more narrow (2.3 eV for sample F). Furthermore, the thin film of 0.8 g CdS/PMMA exhibited the highest and fastest rate of photocatalytic degradation ( 99 % in 240 minutes) among all the composites. These results are attributed to the narrow band gap, higher adsorption capacity and good electron acceptability of CdS. Hence, toxic waste products produced by different industries could be removed by using CdS/PMMA photocatalysts.
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