Biosynthesis of Ultrasonically Modified Ag-MgO Nanocomposite and Its Potential for Antimicrobial Activity. (29th August 2018)

• Record Type: Journal Article
• Authors: Ayinde, Wasiu B.; Gitari, Mugera W.; Muchindu, Munkombwe; Samie, Amidou
• Other Names: Rossi Marco Academic Editor.
• Is Part Of: Journal of nanotechnology. Volume 2018(2018)
• Publication Date: 2018-08-29
• Subjects: Nanotechnology -- Periodicals; Nanotechnology; Nanotechnology; Periodicals; Periodicals; 620.5
• DOI: 10.1155/2018/9537454
• Languages: English
• ISSNs: 1687-9503

Abstract

Abstract : This study reports a green synthesis route for a bilayered Ag-MgO nanocomposite using aqueous peel extract of Citrus paradisi (grapefruit red) under an accelerated uniform heating technique and its antibacterial potency against Escherichia coli . Surface modifications and composition of the nanocomposite were examined using a UV-visible spectrophotometer, transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM) equipped with an energy dispersive X-ray (EDX) analyzer. The efficiencies of the as-synthesized Ag-MgO nanocomposite against Escherichia coli were examined. The synthesized Ag-MgO nanocomposite showed characteristic synergetic bands at 290 nm for MgO nanoparticle and at around 440 nm for Ag nanoparticle which blue-shifted to 380 nm in the composite. A spherically dispersed nanocomposite with cubical crystal lattice network with a diameter of about 20–100 nm comprising Ag nanoparticle embedded within MgO nanoparticles was obtained. The nanocomposite produced stronger antibacterial activity against Escherichia coli as compared to MgO nanoparticle, indicating a higher interaction between Ag and MgO ions. The nanocomposite was successfully synthesized via an efficient modified method by bioreductive agents with an improved synergistic antibacterial property towards water purification.