Microwave synthesis of copper oxide nanoparticles using tea leaf and coffee powder extracts and its antibacterial activity
By Prasanta Sutradhar, M. Saha, D. Maiti. Journal of Nanostructure in Chemistry, 2014
189 citations recorded by the source corpus.
Oxides of copper have been investigated for decades due to their unique semiconductor and optical properties. The review of literature revealed that very few reports are available on the synthesis of copper oxide nanoparticles using microorganisms and plant extracts. In this paper, we have reported the synthesis of copper oxide nanoparticles (CuO) using tea leaf and coffee powder extracts under microwave irradiations. The synthesis was carried out by irradiating metal salt and the extracts of tea and coffee in 1:3 ratio in a microwave at 540 W for 7–8 min. The synthesized nanoparticles were characterized by Scanning electron microscope, X-ray diffraction, UV–visible spectroscopy and Fourier transform infrared spectroscopy. The antibacterial activity of these nanoparticles was tested against six human pathogenic microbes. It was interesting to find that these nanoparticles possess remarkable antibacterial activity against two human pathogenic bacteria. Moreover, the use of environmentally benign materials for the synthesis of CuO nanoparticles offers numerous benefits of eco-friendliness and compatibility for pharmaceutical and other biomedical applications.
Subfields: Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/dd0d8a15d7ba5a5f3e19bdc5b8fee0d681b979a0
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Citations in the corpus
- Biofabrication of copper oxide nanoparticles using Andean blackberry (Rubus glaucus Benth.) fruit and leaf (2015, unknown): “In literature, biofabrication of CuO-NPs using magnolia leaf/plant extract [14], yeast, and fungi [15], algae [16], tea leaf and coffee powder [17] has been already reported.”
- Biosynthesis and effects of copper nanoparticles on plants (2017, methodology): “Copper oxide nanoparticles synthesized by tea leaf or coffee powder extract exhibited inhibition zone of 5–16 mm against Shigella dysenteriae, Vibrio cholerae, Streptococcus pneumoniae, Staphylococcus aureus and Escherichia coli at concentration from 1 to 200 lg/ disc (Sutradhar et al. 2014).”