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2015 | 127 | 6 | 1727-1731
Article title

Hydrothermally Synthesized CuO Powders for Photocatalytic Inactivation of Bacteria

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EN
Abstracts
EN
Various morphologies of monoclinic CuO powders were synthesized by hydrothermal treatment of copper nitrate, copper acetate or copper sulfate. The synthesized samples were characterized by scanning electron microscopy, X-ray diffractometry, the Fourier transform infrared spectroscopy, and diffuse reflectance spectrophotometry. Antibacterial activity of the samples was studied against Escherichia coli bacteria in dark and under visible light irradiation. Although the different precursors yielded the same band gap energies ( ≈1.6 eV) for the synthesized CuO samples, they resulted in various morphologies (hierarchy of stabilized micro/nanostructures), specific surface areas, concentrations of OH-surface groups, and visible light photocatalytic performances. The CuO nanorods synthesized from nitrate hydrothermal bath not only exhibited a considerable effective surface area, but also showed the highest concentration of absorbed OH-groups and subsequently, the strongest (photo)catalytic antibacterial properties ( ≈37 and 94% inactivation of the bacteria in dark and under visible light irradiation, respectively).
Keywords
EN
Publisher

Year
Volume
127
Issue
6
Pages
1727-1731
Physical description
Dates
published
2015-06
received
2015-04-29
Contributors
author
  • Malek-Ashtar University of Technology, Tehran, Iran
author
  • Malek-Ashtar University of Technology, Tehran, Iran
author
  • Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran, Iran
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv127n629kz
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