The related two-step preparation method for predecessor powder of lead zirconate titanate comprises: selecting the tetrabutyl titanate and zirconium oxychloride as material, the anhydrous alcohol and deionized water as solvent, and ammonia as precipitator to coprecipitate and obtain zirconate titanate oxyhydroxide; cleaning the deposition with deionized water to disperse into ammonia solution; leading lead nitrate solution into the ammonia to deposit Pb2+; filtering, cleaning, dewatering and drying to obtain the predecessor powder; calcining the predecessor powder to obtain the pure perovskite-phase objective powder. Compared with other methods, this invention prevents the production of intermediate phase, reduces cost, and has little pollution fit to industrial scale production. |