EFFECT OF COBALT DOPING ON STRUCTURAL, OPTICAL, AND PHOTOCATALYTIC PROPERTIES OF ZNS NANOSTRUCTURES

Abstract

Cobalt (1% and 3%) -doped ZnS nanoparticles were synthesized through co-precipitation technique. The resultant nanoparticles have been analyzed using UV- visible (UV-Vis) and Fourier transform infrared radiation (FTIR). It was found that absorbance increased as Co-doping increased. The optical band gap decreased as the Co content increased, and the band gap varied with the cobalt doping concentration. Energy band gap was found 0.56 eV for 1% and 0.37 eV for 3% doping. Both the samples' FT-IR spectra were captured in the 4000 cm-1 to 400 cm-1 regions. The doping of cobalt source contributed to the sulphate stretching vibration. As a result, it is verified that the sulphate group was present in the synthesized NPs. It is also observed that agglomerates number appears to decrease in the existence of cobalt content which is good for optical and electronic applications.