Flower-shaped CuO Nanostructures: Synthesis,Characterization and Antimicrobial Activity
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2013年第10期
论文作者：K.Mageshwari R.Sathyamoorthy
文章页码：909 - 914
摘 要：In the present work,flower-like℃uO nanostructures were synthesized by reflux condensation method without using any surfactants or templates.Structural analysis by X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FTIR） and Raman studies revealed the formation of highly crystalline single phase℃uO,exhibiting monoclinic structure.Morphological analysis by field emission scanning electron microscopy（FESEM） showed flower-shaped℃uO hierarchical architecture made up of interpenetrating self-assembled nanosheets.Optical analysis by UVeVis diffused reflectance spectra（DRS） exhibited considerable blue-shift in the optical band gap due to quantum confinement effect.Photoluminescence（PL） spectrum showed both UV as well as visible emissions.The antibacterial activity of flower-shaped℃uO nanostructures were tested against gram-positive（Bacillus subtilis,Bacillus thuringiensis） and gram-negative（Salmonella paratyphi,Salmonella paratyphi-a,Salmonella paratyphi-b,Escherichia coli and Pseudomonas aeruginosa） bacteria.Also,the antifungal activity of℃uO was investigated against Aspergillus niger,Rhizopus oryzae,Aspergillus flavus,Cladosporium carrionii,Mucor,Penicillium notatum and Alternaria alternata.Results demonstrate that the flower-shaped℃uO nanostructures act as an effective antimicrobial agent against pathogenic bacteria and fungi.
K.Mageshwari，R.Sathyamoorthy
PG & Research Department of Physics,Kongunadu Arts and Science College
摘 要：In the present work,flower-like℃uO nanostructures were synthesized by reflux condensation method without using any surfactants or templates.Structural analysis by X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FTIR） and Raman studies revealed the formation of highly crystalline single phase℃uO,exhibiting monoclinic structure.Morphological analysis by field emission scanning electron microscopy（FESEM） showed flower-shaped℃uO hierarchical architecture made up of interpenetrating self-assembled nanosheets.Optical analysis by UVeVis diffused reflectance spectra（DRS） exhibited considerable blue-shift in the optical band gap due to quantum confinement effect.Photoluminescence（PL） spectrum showed both UV as well as visible emissions.The antibacterial activity of flower-shaped℃uO nanostructures were tested against gram-positive（Bacillus subtilis,Bacillus thuringiensis） and gram-negative（Salmonella paratyphi,Salmonella paratyphi-a,Salmonella paratyphi-b,Escherichia coli and Pseudomonas aeruginosa） bacteria.Also,the antifungal activity of℃uO was investigated against Aspergillus niger,Rhizopus oryzae,Aspergillus flavus,Cladosporium carrionii,Mucor,Penicillium notatum and Alternaria alternata.Results demonstrate that the flower-shaped℃uO nanostructures act as an effective antimicrobial agent against pathogenic bacteria and fungi.
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