▎ 摘　　要

NOVELTY - Preparation of hollow cubic strontium titanate comprises dissolving tetrabutyl titanate in ethylene glycol monomethyl ether, adding dropwise ammonia water, stirring and adding deionized water until neutral to obtain titanium precursor gel; dissolving strontium 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 hollow cubic strontium titanate (claimed). ADVANTAGE - The product has high crystallinity, good dispersibility and simple preparation. DETAILED DESCRIPTION - Preparation of hollow cubic strontium titanate 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 strontium nitrate in deionized water to concentration of 0.5-1 mol/mL to obtain strontium nitrate aqueous solution, adding graphene oxide solution at mol ratio of 1:100-1:150 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 140 degrees C for 8-12 hours, naturally cooling to room temperature, washing with deionized water until neutral, washing with anhydrous ethanol and drying at 60-80 degrees C.