Preparation of Nanosilica and Nanosilicone from Glass Wastes

Abstract

Nano-silicon and nano-silica are characterized by a wide range of industrial applications, especially in the field of electronics and clean energy generation systems. Therefore, the preparation of these materials is considered one of the important issues that attract the interest of researchers around the world. This research includes a study of the preparation of silica and silicon from glass waste by following several sequential stages that began with collecting samples of broken glass and treating them physically (cracking, grinding, granular sorting) and chemically with sodium hydroxide at a temperature
900°C Then, the silica was isolated by treatment with hydrochloric acid and washing with distilled water to obtain nano-silica with a yield of up to68%.
Subsequently, silicon nanoparticles were prepared from nanoparticles of silica by a reflux reaction in the presence of magnesium at room temperatureC°800 to obtain a powder of nano-silicone with a yield90%.
Resulting materials have been tested with XRD The two- and three-dimensional images captured by the atomic force microscope are shown AFM Formation of silica nanotubes and surface roughness Sa = 78 nm, As for silicon, the surface roughness was Sa = 286 nm