Abstract
Removal of toxic organic industrial dye affluents using solar energy is a sustainable means for overcoming the current energy crisis as well as environmental hazards. CdS nanoparticles are promising photocatalysts due to their energy gap of 2.42 eV and high specific area. Surrounding the CdS core with a shell of ZnS has the potential of reducing the recombination of electron-hole pairs and hence increase its photocatalytic activity. We report here the enhanced photocatalytic activity of CdS/ZnS nanoparticles for the degradation of Methylene blue (MB). The adsorption of MB on the nanoparticles is found to obey pseudo-second-order kinetics.
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