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Influence of ZnO Co-Doping On the Structural, Optical, and Antibacterial Properties of (Zn1-2xcexfex) O Nanoparticles

J.Arul Mary , J. Judith Vijaya

Pure and co-doped ZnO nanoparticles were synthesized by microwave combustion method using urea as a fuel. Structural, optical, morphological and magnetic property was studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), and photoluminescence (PL) spectra. X-ray diffraction measurements of the nanoparticles showed the same wurtzite hexagonal structure and preferential orientation along the c-axis. The scanning electron microscope image of the nanoparticles revealed an average particle size of 47-23 nm. The calculated results from DRS spectroscopy indicated that the band gap of the synthesized samples decreased with the increment of the concentration of co-dopant, which resulted in the red-shift. The photoluminescence (PL) studies revealed that violet, blue and green emissions. The well diffusion method was used for antibacterial activities of two Gram negative and three Gram positive bacterial pathogens. The doping with Ce and Fe by microwave method improves the antibacterial property.

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