microwave-assisted synthesis of alumina nanoparticles using some plants extracts

in present study we studied using green routes for microwave assisted synthesis of alumina nanoparticles from aluminum nitrate. it was revealed that when plant extracts are used, no specific stabilizer is needed. structural characterization of nanoparticles was studied using x-ray diffraction that showed semi-crystalline structure for two of plant extracts, other xrd patterns had no significant peaks that might be ascribed to amorphous structure of synthesized nanoparticles. fourier infrared spectroscopy was used to determine al-o bond and functional groups responsible for synthesis of nanoparticles. ftir confirmed existence of al-o band and bio-functional groups, originated from plant extract. morphology and size of nanoparticles were investigated using scanning electron microscopy, transmission electron microscopy and atomic force microscopy techniques. it was observed that nanoparticles have near-spherical shape. average size of clusters of nanoparticles varied with different routes from of 60 nm to 300 nm. afm images showed that individual nanoparticles were less than 10 nm.