Eco-Friendly Synthesis of Platinum Nanoparticles Using Cold Plasma Method: The Effect of Concentration and Time Exposure

In this study, platinum nanoparticles PtNPs are synthesized in their liquid phase by cold plasma method using plasma jetting technique. Colloidal platinum nanoparticles are prepared using aqueous platinum salts (H2PtCl6.6H2O) with different concentration (10, 20 and 30) ppm by non-ionic water as a solvent agent. The plasma is generated with Argon gas by dielectric barrier discharge jet. PtNPs are produced with a relative exposure time duration of plasma ignition. The samples are characterized by the absorption of UV-visible radiation at a wavelength of (216) nm. The initial composition of the prepared nanoparticles is determined, changing their color to dark yellow. The structure of the prepared sample is examined by X-ray diffraction (XRD). Shearer formula is used to calculate crystal size. Surface morphology and the calculated particles size are studied using scanning electron microscopy (SEM). Found, the formed shapes are spherical or irregular.