Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 31, Issue 14, Pages 11949-11954Publisher
SPRINGER
DOI: 10.1007/s10854-020-03749-1
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- Golestan University
- Institute of Physic of the Czech Academy of Sciences
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Firstly, new copper precursor was prepared from the mixture of Cu(CH3COO)(2)center dot H2O and salicylic acid (1:1 weight ratio) ground for 5 min, and secondly, copper oxide nanoparticles were prepared by calcination of copper precursor at 500 oC and 600 oC for 1.5 h. The products were characterized by Fourier Transform infrared (FT-IR), UV-Vis and photoluminescent (PL) spectroscopy, X-ray powder diffraction (XRD), and transmission electron microscopy (TEM). The FT-IR, UV-Vis, PL, and XRD analysis confirmed the formation of CuO nanoparticles of high purity with a monoclinic structure. TEM images showed that the nanoparticles in both samples had almost similar shape with high agglomeration. The optical band gap value was estimated to be 4.5 and 4.8 eV, respectively, for the as-prepared CuO at 500 and 600 oC, using Tauc's plot. In addition, antibacterial activity against two gram-positive and two gram-negative stains were studied and the inhibition effect of the as-prepared CuO at 500 and 600 oC on gram-negative bacteria is higher than that on gram-positive bacteria
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