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Article – Journal of Advanced Chemical Sciences

Journal of Advanced Chemical Sciences, Volume 2,Issue 2,2016 Pages 237-240

Photo-Physical and Chemical Properties of Ca1-xFexS and Ca1-xCdxS Nanocrystals
Rupali Sood, Dinesh Kumar, H.S. Bhatti*, Karamjit Singh

Semiconductor nanophosphors are currently considered to have smart technological applications in opto-electronic devices due to their size tunable properties. Intrinsic and extrinsic (doped with transition metal elements) Pure and doped CaS nanocrystals have been synthesized by facile solid state reaction method. Synthesized nanocrystals are further etched with mild acid solutions to reduce the particle size, which augments the surface to volume ratio and confinement of carriers. Powder X-ray diffraction (XRD) has been used to investigate crystallography of synthesized nanomaterials. Optical characterization of synthesized nanomaterials has been done by UV-vis. absorption spectroscopic studies. The photo-catalytic activity of synthesized nanomaterials under UV irradiation has been tested using methylene blue (MB) dye as a test contaminant in aqueous media. Photo-catalytic behavior dependence on dopant concentration and etching has been thoroughly studied to explore the potential of these synthesized nanomaterials for next era optoelectronic industrial applications as well as polluted water purification.

Keywords: Ca1-xFexS; Ca1-xCdxS; Nanocrystals; Crystallography; Photo-Catalytic Activity;