https://doi.org/10.1140/epjp/s13360-022-03157-w
Regular Article
Investigation of structural, optical and antibacterial properties of pure and Ni-doped CuO nanostructures
1
Department of Physics, Guru Nanak Dev University, 143005, Amritsar, Punjab, India
2
Department of Pharmaceutical Sciences, Guru Nanak Dev University, 143005, Amritsar, Punjab, India
b
kanwarjitsingh.phy@gndu.ac.in
Received:
25
April
2022
Accepted:
5
August
2022
Published online:
25
August
2022
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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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
