ZnO/CuSe composite-mediated bandgap modulation for enhanced photocatalytic performance against methyl blue dye.

The removal of toxic dye pigments from the environment is of utmost importance since even trace amounts of these pollutants can lead to harmful impacts on ecosystems. Heterogeneous photocatalysis is a potential technique for eliminating microbiological, inorganic, and organic pollutants from wastewater. Here, we report the band gap alteration of ZnO by making its composites with CuSe to enhance photocatalytic activity.

Tuning of the band gap and dielectric loss factor by Mn doping of ZnMnO nanoparticles.

This study explored the structural, optical, and dielectric properties of Pure and Mn doped ZnO nano-particles (ZnMnO) with x ≥ 20%, synthesized by co-precipitation method followed by annealing at 450C. Different characterization techniques were conducted to characterize the as-prepared nano-particles. X-ray Diffraction analysis of the pure and Mn doped presented a hexagonal wurtzite structure and a decreased crystallite size with increasing doping concentration.

Enhancing the physical properties and photocatalytic activity of TiO nanoparticles cobalt doping.

Cobalt-doped TiO-based diluted magnetic semiconductors were successfully synthesized using a co-precipitation method. The X-ray diffraction study of all the samples showed good crystallinity, matching the standard tetragonal anatase phase. The X-ray diffraction peaks of the cobalt-doped sample slightly shifted towards a lower angle showing the decrease in particle size and distortion in the unit cell due to cobalt incorporation in the lattice of TiO.

The effect of Mn and Co dual-doping on the structural, optical, dielectric and magnetic properties of ZnO nanostructures.

This paper addresses the effect of Mn (2%, fixed) and Co (2, 4, and 6%, varied) substitution on the structural, optical, dielectric and magnetic responses of ZnO nanoparticles synthesized by the co-precipitation chemical route. The X-ray diffraction analysis confirms the hexagonal wurtzite structure of ZnO. The incorporation of co-doping in the ZnO host, indicated by peak shifting in the XRD patterns, enhanced the crystallite size of the Mn/Co dual-doped ZnO nanoparticles.