Technological Aspects of Obtaining SiO2 Nanoparticles

The paper shows possibility to obtain the silica nanoparticles by method realized using experimental plasma system. The advantages of the installation include its design and absence of necessity chlorine-containing raw materials usage. Studies on the use of different silicate raw material such as, for example, granite (silica content - 62.5%), milled glass (silica content - 72.5%) and silica sand (silica content - 98.5%) were conducted, but only results for silica sand sublimation product are presented in frames of this paper. According to the research the technological features of silica nanoparticles synthesis were identified. X-ray diffraction, transmission electron microscopy and energy-dispersive X-ray spectroscopy were used to characterize the synthesized product. The obtained silica nanoparticles are agglomerated, have spherical shape and primary diameters between 10-30 nm.