^aDepartment of Physics, Sona College of Technology, Salem – 636005, India

^bDepartment of Physics, Kalaignar Karunanidhi Institute of Technology,

Coimbatore-641402

^cDepartment of Physics, Erode Sengunthar Engineering College, Perundurai

638057, Tamil Nadu, India

^dDepartment of Physics, Saveetha Engineering College, Chennai 602105, Tamil

Nadu, India

The key goal of this study is to innovate the pure and 0.05, 0.10 and 0.15 wt.% of Cu- doped ZnO NPs through co-precipitation technique. PXRD pattern shows the hexagonal crystal structure with no any phase impurity were observed for all the synthesized samples.

From UV-Vis DRS spectra, band gap was obtained as 3.18, 3.24, 3.29 and 3.33 eV respectively for undoped, Cu-doped ZnO NPs (0.05, 0.10 and 0.15 wt.%). From SEM analysis, the agglomeration of rod-like morphology for pure ZnO NPs, spherical-like morphology for Cu-doped ZnO NPs (0.05 wt.%) and flake-like morphology for Cu-doped ZnO NPs (0.10 wt.%) and flower-like morphology for Cu-doped ZnO NPs (0.15 wt.%).

The photocatalytic performance of the synthesized NPs was studied by the dye degradation of Methylene Blue (MB) under UV irradiation. The result exposed that, 0.15 wt.% of Cu-doped ZnO NPs is found to have efficient degradation candidate materials.