Browsing by Author "MUDASSAR SHER"

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    Synthesis, characterization, optical and antibacterial properties of Ni-DOPED ZnO Nano-particles
    (UMT, Lhr, 2015) MUDASSAR SHER
    The importance of nano-particles is increasing day by day due to their potential utility in biomedicines, solar cells and in nano-composite materials. Further the effect of doping to enhance the properties of nano-particles is also under research in current period all over the world. In this work, co-precipitation and solvo-thermal methods were employed and both methods successfully yield Ni-doped zinc oxide nano-particles. We also synthesized un-doped zinc oxide nano-particles via solvo-thermal method. All prepared nano-particles were characterized through X-ray diffraction studies. To validate nickel doping in zinc oxide nano-particles Energy Dispersive X-ray analysis were further employed and Energy Dispersive X-ray results confirmed desired doping in all samples. Scanning Electron Microscopy analysis was performed to study shape and morphology of all prepared nano-particles samples. The results of all above mentioned characterization methods confirmed successful preparation of Ni-doped zinc oxide nano-particles through both preparation methods. All synthesized sampled were also employed to check their antibacterial activity. In Antibacterial study, zones of inhibition have been calculated against Gram positive (Bacillus Subtilis) and Gram negative (Escherichia coli) bacterial species. Different molar concentrations of Ni-doped zinc oxide nano-particles were checked through ager well diffusion method. The results showed that antibacterial activity is directly proportional to concentration of Ni-doped zinc oxide nano-particles Furthermore Gram positive bacteria are found generally more affected with synthesized nano-particles as compared with Gram negative bacteria. The effective antibacterial activity has shown by all prepared Ni-doped zinc oxide samples favor their use as antibacterial agent. Band gap analysis was performed to check optical activity for all samples. It was noted that doped sample shown enhanced optical character when compared with un-doped samples.