RETRACTED ARTICLE: Green Synthesis of Luminescent Copper Oxide Nanoparticles Using Ginger Lily Leaves Extract
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Green Synthesis of Luminescent Copper Oxide Nanoparticles Using Ginger Lily Leaves Extract P. B. Nagore1 · A. J. Ghoti1 · A. P. Salve1 · K. G. Mane1 Received: 27 March 2020 / Accepted: 23 May 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The synthesis of copper oxide nanoparticles was carried out employing simple green method by using Ginger lily leaves extract at room temperature. The phytogenically synthesized nanoparticles were characterized by XRD, FT-IR, HRTEMSAED, FESEM-EDAX, PL and UV–Visible techniques. The XRD, FESEM and HRTEM analysis revealed average size of synthesized nanoparticles as about 40 nm. The absorbance around 300 nm in UV–Visible spectra confirmed phytogenic synthesis of CuONPs. The PL spectra indicated their luminescent character as the emission bands appeared around 289 nm and 580 nm indicating green-yellow emission at excitation wavelength 290 nm. The synthesized copper nanoparticles were tested against gram positive and gram negative bacteria as well as against selected fungal strain. Phytogenically synthesized CuONPs exhibited potent and excellent antibacterial activities against E. coli and S. aureus and moderate antifungal activities. Keywords Green synthesis · Ginger lily · Luminescent copper nanoparticles Abbreviations GL Ginger lily GLLE Ginger lily leaves extract CuONPs Copper oxide nanoparticles XRD spectra X ray diffraction spectra FT-IR spectra Fourier transform Infrared spectra HRTEM-SAED High resolution transmission electron microscopy-Selected area diffraction FESEM Field emission scanning electron microscopy PL spectra Photoluminescence spectra UV–Vis. spectra Ultra violet–Visible spectra
1 Introduction The term nano corresponds to the particle size ranging from 1 to 100 nm and the nanotechnology is modern era technology which have occupied 21st century. There have been many methods reported for synthesis of nanoparticles viz. physical, chemical and biological * K. G. Mane [email protected] 1
Doshi Vakil Arts College and G.C.U.B. Science & Commerce College, Goregaon‑Raigad, Maharashtra 402103, India
methods. But among these, biological methods have attracted more attention of researchers worldwide. In recent time, many researchers are reporting the synthesis by using biological methods more specifically by use of plant materials like their leaves, stem, bark, roots, rhizomes, flowers as well as from their secondary metabolites [1, 2]. Because of need of time, these methods have been employed by investigators as these methods have many advantages over physical and chemical methods like easy work up, cost effectiveness, less hazardous way, caring natural balance as well as due to sustainability [3]. Copper is member of first transition series and an important metal for human beings. Copper oxide nanoparticles have found enormous applications in the field of photocatalysis [4–6], solar cells [7], catalysis [8], sensing [9] etc. Many reports on phytogenic synthesis of copper oxide nanoparticles can be found in literatu
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