Simple synthesis of submicrometer lead titanate powder by precipitation of TiO2 precursor on PbO particulates

Abstract

A simple way to prepare phase-pure, submicrometer PbTiO3 powder was tried by precipitation. Precipitation was carried out in an aqueous PbO slurry using aqueous TiCl4 and dilute NH4OH at pH 9.5 +/- 0.1. The TG/DSC curves of the PT precursor show weight loss of similar to 7% and two exotherms at 492 degrees and 522 degrees C, They are attributed to the crystallization of tetragonal PbTiO3,, XRD shows that tetragonal PbTiO3, can be obtained by heat treatment around 500 degrees C via a noncrystalline state. SEM shows that the PbTiO3, powder calcined at 600 degrees C for 1 h is well crystallized and in the range of 100-300 nm.