Copper oxide nanosheets prepared by facile microplasma electrochemical technique with photocatalytic and bactericidal ac
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Copper oxide nanosheets prepared by facile microplasma electrochemical technique with photocatalytic and bactericidal activities Tariq Iqbal1, Atique ur Rehman1, M. A. Khan2,* , M. Shafique1, Pervaiz Ahmad1, Hasan Mahmood3, Muhammad Naeem2, and Javed Iqbal1 1
Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan Department of Physics, Women University of Azad Jammu and Kashmir, Bagh 12500, Pakistan 3 Department of Physics, State University of New York at Albany, Albany, NY 12222, USA 2
Received: 2 May 2020
ABSTRACT
Accepted: 10 August 2020
Copper oxide (CuO) nanostructures are synthesized via a simple and novel atmospheric pressure microplasma technique without using any surfactant. The effect of electrolyte concentration on structure, size, and morphology of CuO nanostructures has been investigated by X-ray diffraction (XRD), laser-induced breakdown spectroscopy (LIBS), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The results revealed the formation of highly crystalline single phase CuO, exhibiting a monoclinic structure. SEM images have shown an interpenetrating self-assembled nanosheets (NS) with varying sizes. The energy bandgap of the samples is estimated between 2.0 and 2.73 eV. The antibacterial activity of CuO NS demonstrates significant bactericidal efficiency against gram-negative bacteria. In addition, these NS are checked for the degradation of organic dyes such as Rhodamine B and methyl orange under sunlight irradiation which showed significant degradation, indicating excellent photocatalytic activity. It has been found that CuO NS are promising material for pharmaceutical and biomedical applications because of its attractive photocatalytic and antibacterial properties.
Springer Science+Business
Media, LLC, part of Springer Nature 2020
1 Introduction Environmental pollution caused by organic waste from coloring industries and microbial contamination of soil, water, and air induces unfavorable effects on human health and aquatic life. Therefore, the development of effective photocatalysts and the
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https://doi.org/10.1007/s10854-020-04219-4
bactericidal agent has been a matter of increasing interest in the scientific community in recent years. Transition metal oxides nanostructures have been attracting attention for various potential applications (like waste water treatment) because of their exceptional physical and chemical properties [1–5]. At nanoscale dimensions, physical and chemical
J Mater Sci: Mater Electron
properties depend strongly on the size, shape, composition, and crystal structure of the material. Compared with micro- or bulk counterparts, metal oxide nanomaterials demonstrate exceptional structural characteristics such as a significant change in surface energy due to the increase in the surface-to-volume ratio, and quantum confinement effects [3, 6, 7]. Cupric oxide (CuO) is a promising material among other transition metal oxides because of i
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