Hence, recent researches have been attempted to employ nature-based sources such as plants extracts, fungi, bacteria, and marine organisms, as sustainable alternative methods toward green nanoparticles fabrication. Whereas biological procedures are non-toxic, high atom economy, straightforward methodology and most importantly they are environment-friendly. solvent, the reducing agent, acid and base reagents) which potentially expose the environment to serious health hazards so that restricts their advantages. Despite their popularity, they are high cost and often contain toxic materials (e.g. Presently, a considerable number of physical and chemical procedures were presented to fabricate the various types of nanoscale particles with different shape and size. Nanoparticles owing to high surface area and a tiny particle size show inimitable material characteristics in comparison with bulk materials, which make them high in demand and widely applied area for miscellaneous applications in recent years. Bio-assisted copper oxide nanoparticles demonstrated significant catalytic efficiency and reusability toward 4-nitrophenol removal by an average of 97.6% from aqueous solutions after successive 5 days’ exposure to UV irradiation. X-ray photo-electron spectroscopy analyses revealed only copper and oxygen elements in the sample, confirming the purity of copper oxide nanoparticles.
Transmission electron microscopy results showed the spherical shape of nano-particle with an average size of 22 ± 1.5 nm. The stability of copper oxide nanoparticles was confirmed after 3 months’ storage of product with no sedimentation or suspension. X-ray diffraction pattern results demonstrated the monoclinic structure of highly pure biosynthesized copper oxide nanoparticles with a crystallite size of 20.76 nm.
Fourier-transform infrared spectroscopy analysis determined Cu–O bonds in nanosample, indicating the active role of functional groups in the wheat seed extract in bio-reduction of Cu cations. The ultraviolet-visible absorption peak at 300 nm was confirmed the formation of copper oxide nanoparticles. Under optimal reaction conditions, the wheat seed extract-derived electron-rich biomolecules were functioned as a reducing and capping/ stabilizing agent. A facile novel green methodology is presented for the synthesis of highly stable and well-dispersed copper oxide nanoparticles using aqueous wheat seed extract.
0 kommentar(er)
