Structural, optical and Photocatalytic degradation of organic dyes by sol gel prepared Ni doped CdS nanoparticles

The present work demonstrates the effect of Ni doping on the, structural, optical, morphology behaviour, as well as the photocatalytic degradation efficiency of Methylene blue (MB) and Methylene orange (MO) by cadmium sulfide (CdS) nanoparticles. The different percentages (0.5, 1.0, 1.5 and 2.0%) of Ni doping CdS nanoparticles are successfully synthesized with average crystalline size from 8.70 to 9.93 nm by sol gel method. The SEM image were combination of metal oxide cubes and rod-like structures with 12-35 nm unequal grain size results in excellent crystalline quality. Optical properties of the sample revealed that the band gap energy decreased from 2.36 to 2.29 eV with an increase in Ni doped percentage. Furthermore, photocatalytic degradation of MB and MO dyes under sunlight irradiation using Ni doping CdS nanoparticles was performed. The prepared nanoparticle shows 94% degradation activity for MO dye for 75 min. Now a days, sol gel method has attracted a great attention for the production of nanocparticles due of its simplicity and cost effective nature.