▎ 摘　　要

NOVELTY - Preparation of calcium titanate powder with micro-nano structure comprises dissolving tetrabutyl titanate in ethylene glycol monomethyl ether, adding dropwise ammonia water, stirring and adding deionized water to obtain titanium precursor gel; dissolving calcium nitrate in deionized water, adding graphene oxide solution, adding titanium precursor gel, completely stirring and adding potassium hydroxide aqueous solution; and adding into reaction kettle, regulating volume by deionized water, reacting, naturally cooling, washing with deionized water, washing with anhydrous ethanol and drying. USE - Method for preparing calcium titanate powder with micro-nano structure (claimed). ADVANTAGE - The product has high crystallinity, good dispersibility and high purity. DETAILED DESCRIPTION - Preparation of calcium titanate powder with micro-nano structure comprises: (A) dissolving tetrabutyl titanate in ethylene glycol monomethyl ether to concentration of 1-2.5 mmol/mL, adding dropwise ammonia water, stirring to obtain gel and adding deionized water until neutral to obtain titanium precursor gel; (B) dissolving calcium nitrate in deionized water to concentration of 0.5-1 mol/mL to obtain calcium nitrate aqueous solution, adding graphene oxide solution to obtain mixed solution, adding titanium precursor gel, completely stirring to obtain suspension and adding potassium hydroxide aqueous solution to obtain turbid liquid; and (C) adding into reaction kettle, regulating volume by deionized water, reacting at 120 degrees C for 1 hour, naturally cooling to room temperature, washing with deionized water until neutral, washing with anhydrous ethanol and drying at 60-80 degrees C.