Andean Sacha Inchi (Plukenetia Volubilis L.) Leaf-Mediated Synthesis of Cu2O Nanoparticles: A Low-Cost Approach

Abstract

In this work, Andean sacha inchi (Plukenetia volubilis L.) leaves were used to prepare monodispersed cuprous oxide (Cu2O) nanoparticles under heating. Visual color changes and UV-visible spectroscopy of colloidal nanoparticles showed λmax at 255 nm, revealing the formation of copper oxide nanoparticles. Transmission electron microscopy and dynamic light scattering analysis indicated that the prepared nanoparticles were spherical with an average size of 6–10 nm. The semi-crystalline nature and Cu2O phase of as-prepared nanoparticles were examined by X-ray diffraction. Fourier-transform infrared spectroscopy confirmed the presence of polyphenols, alkaloids and sugar in the sacha inchi leaf, allowing the formation of Cu2O nanoparticles from Cu2+. Additionally, as-synthesized Cu2O nanoparticles exhibited good photocatalytic degradation activity against methylene blue (>78%, 150 min) with rate constant 0.0219106 min−1. The results suggested that the adopted method is low-cost, simple, ecofriendly and highly selective for the synthesis of small Cu2O nanoparticles and may be used as a nanocatalyst in the future in the efficient treatment of organic pollutants in water.

Synthesis and Antimicrobial Activity of Plant Based Silver Nanoparticles - A Review

“…Energy dispersive x-ray (Edx) spectroscopy gives elemental analysis, TEM, and selected area electron diffraction (SAEd) to show the structure pattern of the material. As reported by (Kumar et al, 2017) the AgNP's uV-Vis spectra occur at λmax = 435 nm, TEM indicates the crystalline structure and spherical shaped particles in a size range of 12 to 50 nm. on the other hand, (Nayak et al, 2016) have reported that the synthesized silver nanoparticles could be preliminarily identified by color, which gives the formation of silver nanoparticles and is further validated by using uV-Visible spectroscopy.…”

“…hence, silver nanoparticles can help to improve the performance of antibiotics. (Kumar et al, 2017) were concluded that obtained silver nanoparticles show good antioxidant efficiency (>78%, 0.1 mM) against 1,1-diphenyl-2-picrylhydrazyl. The synthesis process is an environmental ecofriendly and promising aspirant for biomedical applications.These particles exhibit antibacterial activity against bacteria.…”

“…(Jyoti et al, 2016) reported that silver nanoparticles were biosynthesized by green chemistry path using aqueous leaves extract of urtica dioica and and tested against various bacterias. (Kumar et al, 2017), reported clearly on green synthesis of AgNP's from Andean blackberry fruit extracts and used in various biomedical and medicinal fields. Authors infer synthesis of biomolecules free from harmful chemicals gives novel phytochemistry.…”

Fabrication of monodispersed copper oxide nanoparticles with potential application as antimicrobial agents

“…The UV-Vis absorption spectra revealed an absorbance as portrayed in Fig. 1a (black line) from ~ 300 to ~ 350 nm suggesting formation of copper oxide nanoparticles 40,41 . Albeit copper nanoparticles exhibit intense localized surface plasmon resonance in the visible region, the nanoparticles in the current study didn't show any peak in the visible region, while distinct broad band was observed at ~ 320 for surfactant stabilized copper oxide nanoparticles.…”

“…Albeit copper nanoparticles exhibit intense localized surface plasmon resonance in the visible region, the nanoparticles in the current study didn't show any peak in the visible region, while distinct broad band was observed at ~ 320 for surfactant stabilized copper oxide nanoparticles. This could be attributed to the formation of cuprous oxide nanoparticles (Cu 2 O) 40,42,43 .…”