Low-Temperature Synthesis of Nano-Crystalline MgTi₂O₅ Powders by Aqueous Sol-Gel Process

Abstract

The pseudobrookite-structure MgTi2O5was successfully synthesized by the aqueous sol-gel method using titanium dioxide and magnesium nitrate as starting materials instead of expensive organic solvent and metal alkoxides. The as-prepared nanopowders were characterized by X-ray diffraction (XRD), differential thermal analysis (DTA) and transmission electron microscope (TEM), respectively. The results showed that the calcinations process of gel consisted of a series of oxidation and combustion reactions, accompanied by significantly exothermal effects. Highly reactive nanosized magnesium titanate powders were successfully obtained at 650 °C with less than ~100 nm.

The sol–gel approach as a method of synthesis of xMgO·ySiO2 powder with defined physicochemical properties including crystalline structure

“…The powders thus obtained, subjected to a calcination process, in many cases exhibit interesting crystalline structures with a broad spectrum of application [22][23][24][25][26].…”