Synthesis of PbTiO₃ nanoplates by two-step hydrothermal method with pH-adjusting agent of ammonia solution

PbTiO3 nanoplates were synthesized by a two-step hydrothermal method, and ammonia solution was chosen as pH-adjusting agent. The effect of concentration in the second-step precursors, Pb-Ti feedstock concentration, reaction temperature, time on crystallization morphologies nanocrystals investigated. typical single-crystal with stair-like edge formed, nominal first-step precursors 8.8 mol/L, 4.4 0.05 they at 200°C for 20 h. thickness about 45 nm, lateral size 400 nm. played an important role formation nanoplates, growth mechanism method discussed.