Speaker
Description
Green synthesis is a biological method for nanoparticles obtaining. As an environmentally friendly method, it does not require expensive, toxic, and harmful chemicals. For this reason, plant extracts are used as reducing agents to metal nanoparticles formation. Several plant biomolecules play a major role in the metals’ reduction acting as capping agents. Various parts of plants, such as leaves, flowers, fruits, seeds, and stems, are used as a source of biomolecules for the metal nanoparticles synthesis. Aqueous extracts of blackberry (Rubus spp.) leaves obtained by maceration at room temperature were used to stabilize silver nanoparticles (AgNPs). The synthesis was carried out at boiling temperature, and the obtained nanoparticles were characterized by X-ray diffraction (XRD) and energy dispersive X-ray (EDX) spectroscopy. The XRD spectra confirmed the formation of AgNPs with peaks at 2θ at around 38.2°, 44.3°, 64.5, 77.4 and 81.47°, corresponding to the reflection planes (111), (200), (220), (311) and (321), respectively, where the (111) plane is the most intense. The average crystallite size was in the range of 18.0±3-21.1±2 nm. EDS spectrum confirmed the the presence of silver with intensive signal at about 3 keV. The largest signal corresponds to elemental silver, and the other signals with lower intensities correspond to the presence of C, N, O, and Mg, which most likely originate from the extracts. The formed nanoparticles will be used for further testing for application in future cosmetic preparations.
| Scientific Sections | Green Nanotechnology |
|---|
