Tuning the microtexture of carbonaceous particles produced by a spark generator system

In this work we pose attention to the nanotexture tuning (strictly linked to the chemical reactivity and, in turn, to the surface chemistry) of carbonaceous Palas GFG particles produced from graphite rods by acting on three parameters: gas carrier (nitrogen, argon), gas purity, discharge frequency (50, 300 Hz). The chemical reactivity and the surface chemistry of the particles have been evaluated by thermogravimetry (TG) and infrared spectroscopy (FTIR), respectively, as a function of the Palas operating parameters, crossing the findings with the morphology and internal structural characteristics inferred by transmission electron microscopy (HRTEM).