Abstract
The present work focuses on the detailed investigation of the structural, optical and antibacterial properties of undoped and Ni-doped CuO nanostructures. The CuO nanostructures with different mol% (0, 1 and 3) of nickel oxide have been synthesized using the ball milling for 20 h, followed by calcination for 4 h at 500 °C. The X-ray diffraction patterns reveal that all the samples contain only CuO with a monoclinic phase and indicate the successful doping of Ni into the host matrix. The Rietveld refinement of the XRD patterns indicates the decrease in structural parameters with increase in dopant concentration. The results of the Williamson–Hall method reveal the decrease in crystallite size and increase in micro-strain with Ni-doping. The optical band energy of the CuO nanoparticles has been obtained with the help of UV–visible data, and it is found to increase with the increase in Ni content. The detection of various types of defects and vacancies in CuO nanoparticles has been carried out using photoluminescence spectra. The antibacterial activity of the synthesized CuO nanostructures has been investigated against pathogenic bacteria (S. aureus and E. coli) using the agar well diffusion method.
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One of the authors Jasvir Singh gratefully acknowledges University Grant Commission for providing UGC-BSR fellowship to carry out this research work.
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Singh, G.P., Singh, K.J., Singh, J. et al. Investigation of structural, optical and antibacterial properties of pure and Ni-doped CuO nanostructures. Eur. Phys. J. Plus 137, 959 (2022). https://doi.org/10.1140/epjp/s13360-022-03157-w
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DOI: https://doi.org/10.1140/epjp/s13360-022-03157-w