Abstract
The PbTiO3 nanocrystals were synthesized by a hydrothermal method, and ammonia solution was firstly used as a pH-adjusting agent. The effect of ammonia concentration on formation and morphologies of PbTiO3 nanocrystals was investigated. At low ammonia concentration (0–2.2 mol/L), no perovskite PbTiO3 phase was formed. When the ammonia concentration was 4.4 mol/L, the rod-like PbTiO3 nanocrystals with highly crystalline were successfully synthesized. As the ammonia concentration further increased to 13.2 mol/L, the flake-like PbTiO3 nanocrystals were formed. The PbTiO3 nanocrystals were firstly synthesized by the hydrothermal method with the pH-adjusting agent of ammonia solution. When the ammonia concentration was 4.4 mol/L, the single-phase PbTiO3 nanorods were successfully synthesized.
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