Preparation of CaO-SiO2 Glass-Ceramic Spheres by Electrospraying Combined with Sol-Gel Method

الملخص EN

CaO-SiO2 glass-ceramic spheres were prepared by an electrospray method using hydrolyzed silicon alkoxide containing calcium nitrate.

Crystalline calcium silicates, such as Ca2SiO4 and β-CaSiO3, formed around the surface of the spheres after heat treatment.

The dissolution of the crystal phase of the spheres caused the release of Ca2+ and Si4+ ions during the initial stage of soaking in Tris-buffer solution, leading to the formation of nanosized pores at the sphere surface.

The incorporation of Ca2+ ions into the glassy phase of the spheres suppressed the rapid pH increase during the initial stage of soaking in Tris-buffer solution.