Title: Synthesis and characterisation of manganese and nickel doped zinc oxide nanoparticles: photocatalytic and antibacterial activity

Authors: M. Prakash; Helen P. Kavitha; S. Abinaya; T.V. Rajendran

Addresses: Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Ramapuram Campus, Chennai 600-089, Tamil Nadu, India ' Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Ramapuram Campus, Chennai 600-089, Tamil Nadu, India ' Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Ramapuram Campus, Chennai 600-089, Tamil Nadu, India ' Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Ramapuram Campus, Chennai 600-089, Tamil Nadu, India

Abstract: The structural, morphological, photocatalytic and antibacterial behaviour of manganese and nickel doped zinc oxide nanoparticles were investigated using the sol-gel process. Fourier transform infrared (FTIR) spectra and scanning electron microscopy (SEM) energy dispersive X-ray (EDX) spectroscopy were used to describe the synthesised Mn and Ni-doped ZnO nanoparticles. UV-visible spectroscopy is now used. The hexagonal wurtzite structure of ZnO nanoparticles is shown by X-ray diffraction studies and it shows Mn and Ni doping reduce the crystallite size. The surface morphology of zinc oxide nanoparticles is significantly altered by doping with Mn and Ni according to a scanning electron microscopy report. The dopants Mn and Ni have been successfully integrated into the ZnO nanoparticles, according to energy dispersive X-ray spectroscopy. Using the disc diffusion process, the photocatalytic degradation of methylene blue (MB) by synthesised nanoparticles confirms that they act as photocatalysts. The antibacterial activities of ZnO, Mn and Ni doped ZnO nanoparticles were investigated against two pathogenic bacteria and their results were analysed.

Keywords: ZnO; nanoparticles; methylene blue and antibacterial activity; methylene blue; MB; sol-gel method.

DOI: 10.1504/IJNP.2022.126379

International Journal of Nanoparticles, 2022 Vol.14 No.2/3/4, pp.260 - 276

Received: 04 Jun 2021
Accepted: 29 Aug 2021
Published online: 24 Oct 2022 *

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