Nanosized oxides can be synthesized through various methods, including: - Sol-Gel Method: Involves the transition of a system from a liquid "sol" into a solid "gel" phase. - Hydrothermal Synthesis: Uses aqueous solutions under high temperature and pressure to form nanomaterials. - Precipitation: Involves forming solid particles from a solution. - Thermal Decomposition: Uses heat to break down precursor materials into nanosized oxides.