PREPARATION METHOD OF NANO-SIZED TITANATE-BASED POWDER AND NANO-SIZED TITANATE-BASED POWDER PREPARED BY THE METHOD

摘要

PURPOSE: A method for preparing a nano-sized titanate-based powder and a nano-sized titanate-based powder prepared by the method are provided, to produce a non-cohesive nano-sized titanate-based powder massively. CONSTITUTION: The method comprises the steps of dissolving a titanate-based precursor material, an organic carboxylic acid and an additive selected from a glycol and polyvalent alcohols in a solvent to prepare a titanate-based precursor solution; generating a liquid drop from the titanate-based precursor solution; and drying the liquid drop, sintering the dried one and milling the sintered one to prepare a titanate-based powder. Preferably the titanate-based precursor material is at least one selected from the group consisting of a titanium alkoxide, a titanium chloride, a titanium hydroxide and a titanium oxide; the solvent is water, an alcohol or a weak acid aqueous solution; the glycol is at least one selected from the group consisting of ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, polyethylene glycol, polypropylene glycol, triethylene glycol, tetraethylene glycol and butanediol-1,4-hexylene glycol oxylene glycol; the organic carboxylic acid is at least one selected from the group consisting of citric acid, malic acid, mesotartaric acid, pyruvic acid and meconic acid.