Green synthesis of cobalt oxide nanoparticles from Clitoria ternatea flower extracts its characterization and biological activities

G. T. Parethe *, P. Rajesh, P.Nathiya, M. Balaji and S. Kavica

Department of Chemistry, Government Arts College (Autonomous), Coimbatore-641018, India
 
Research Article
World Journal of Advanced Research and Reviews, 2023, 19(01), 001–009
Article DOI10.30574/wjarr.2023.19.1.1301
 
Publication history: 
Received on 22 May 2023; revised on 01 July 2023; accepted on 03 July 2023
 
Abstract: 
Cobalt oxide nanoparticles (Co3O4-NPs) have numerous applications and presently the green method for the synthesis of nanoparticles is favored over other methods because of their benefits to the environment. In this study, Co3O4-NPs were synthesized by using the flower extracts of Clitoria ternatea and Cobaltous chloride hexahydrate as a source of cobalt. The synthesized Co3O4-NPs were studied by different techniques such as UV-Visible Spectroscopy, Fourier transform (FTIR), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy dispersive analysis. Scanning Electron Microscopy images revealed the spherical and irregular structure of Co3O4-NPs having the particle size between 13 to 17 nm. X-ray diffraction showed the crystalline nature of cobalt oxide nanoparticles with Face – centered cubic. The prepared Co3O4-NPs showed significant antimicrobial activity against Streptococcus thermophilus, Aspergillus flavus and Aspergillus niger.
 
Keywords: 
Clitoria ternatea; Cobalt oxide nanoparticles; Surface functionalisation; Antibacterial activity; Antifungal activity
 
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