Green synthesis and characterization of palladium nanoparticles using Origanum vulgare extract and their catalytic activity.

مقال فى مجلة

The synthesis of Palladium (Pd) nanoparticles by green methods has attracted remarkable
attention in recent years because of its superiority above chemical approaches, owing to its low cost
and ecological compatibility. In this present work, we describe a facile and environmentally friendly
synthesis of Pd nanoparticles (Pd NPs) using an aqueous extract of aerial parts of Origanum vulgare L.
(OV) as a bioreductant. This plant is available in many parts of the world as well as in Saudi Arabia
and is known to be a rich source of phenolic components, a feature we fruitfully utilized in the
synthesis of Pd NPs, using various concentrations of plant extracts. Moreover, the OV extract
phytomolecules are not only accountable for the reduction and progression of nanoparticles, but
they also act as stabilizing agents, which was confirmed by several characterization methods.
The as-synthesized Pd nanoparticles (Pd NPs) were analyzed using ultraviolet-visible spectroscopy
(UV-Vis), Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission
electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), and thermal gravimetric
analysis (TGA). Further, FT-IR study has proven that the OV not merely represents a bioreductant
but also functionalizes the nanoparticles. Furthermore, the green synthesized metallic Pd NPs were
successfully applied as catalysts for selective oxidation of alcohols.