Effect of temperature and time on morphology of CuO nanoparticle during synthesis

In the past decades, many methods have been developed to synthesize zero- dimensional  nanoparticles, quasi–one–dimensional (۱D) CuO nanostructures, such as metal organic deposition technique,  microwave irradiation, sol-gel-like dip  technique, reverse micelle-assisted route, chemical method, and simple template free solution route. Among those synthesis methods, hydrothermal and chemical reaction methods are of particular interest because they are safe and environmental-friendly synthesis. By use of nonionic surfactant polyethylene glycol (PEG), the clew CuO nanostructure with the diameter of about ۴ µm was prepared at ۱۵۰˚C for ۱۱ hr. As the temperature increased to ۱۶۰C for ۱۱ hr, the gear wheel CuO nanostructure with the diameter of about ۷۰ nm was made. Furthermore, two other temperatures (۱۸۰ and ۲۰۰) are utilized for ۲۰ hr to produce nanowire. The product was characterized by powder X-Ray diffraction, and scanning electron microscopy SEM showed the various shapes of CuO nanostructures, including clew, gearwheel, and nanowire bundles.

کلیدواژه ها:

nanostructure ، Hydrothermal ، nanowires ، Novel shape