Microwave-assisted synthesis of CdO-ZnO nanocomposite and its antibacterial activity against human pathogens.

Authors :: Karthik K
Dhanuskodi S
Gobinath C
Sivaramakrishnan S
Source :: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [Spectrochim Acta A Mol Biomol Spectrosc] 2015 Mar 15; Vol. 139, pp. 7-12. Date of Electronic Publication: 2014 Dec 01.
Publication Year :: 2015
Abstract: CdO-ZnO nanocomposite was prepared by microwave-assisted method and characterized by X-ray crystallography (XRD), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FT-IR). It exhibits hexagonal cubic structure with an average crystallite size of 27 nm. From the UV-Vis spectra, the bandgap is estimated as 2.92 eV. The fluorescence spectrum shows a near band edge emission at 422 nm. In addition the antibacterial activity of CdO-ZnO nanocomposite was carried out in-vitro against two kinds of bacteria: gram negative bacteria (G -ve) i.e. Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae and gram positive bacteria (G +ve): Staphylococcus aureus, Proteus vulgaris and Bacillus spp. This study indicates the zone of inhibition of 40 mm has high antibacterial activity towards the gram positive bacterium S. aureus.<br /> (Copyright © 2014 Elsevier B.V. All rights reserved.)

Language :: English
ISSN :: 1873-3557
Volume :: 139
Database :: MEDLINE
Journal :: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
Publication Type :: Academic Journal
Accession number :: 25546491
Full Text :: https://doi.org/10.1016/j.saa.2014.11.079

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