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Biogenic synthesis of CuO nanoparticles using Couroupita guianensis petal stem bark and leaves extract Characterization and antibacterial applications

. S. Logambal, T. Thilagavathi, C. Inmozhi, S. Panimalar, F. A. Bassyouni, R. Uthrakumar and R. Renuka


This article reports on a new rout to synthesize of copper nanoparticles with aqueous extracts from Couroupita guianensis Aubl. This is an environmentally friendly, inexpensive and time-saving method of producing nanoparticles. The aqueous extracts of petals, stems, bark and leaves were used to synthesize the nanoparticles.  Plant extracts induce the reduction of Cu2  ions into CuNP and act as protection and stabilization agents. The formation of CuNPs was monitored throughout the synthesis process by absorption spectra from the UV Vis spectrophotometer. Fourier transfer infrared FTIR and Scanning Electron Microscope SEM were used to characterize the synthesized nanoparticles. The new synthesized nanoparticles exhibited good antibacterial activity against Bacillus Subtilis and Escherichia coli. The antibacterial properties have also proven to be a good result for bacteria reduction with using copper nanoparticles as a low cost-effective production for sustainable applications from Couroupita guianensis Aubl extract.

Keywords: Copper nanoparticles, Couroupita  guianensis, UV Vis, FTIR, SEM

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