Low-temperature synthesis of Bi_4Ti_3O_(12) nanocrystals by hydrothermal method

摘要

The Bi~(4)Ti~(3)O~(12)nanocrystals were synthesized by a hydrothermal method, and NaOH was used as a pH-adjusting agent. The effect of reaction temperature on formation and morphologies of Bi~(4)Ti~(3)O~(12)nanocrystals was investigated. The single-phase Bi~(4)Ti~(3)O~(12)nanocrystals were prepared at 140–220 °C. As the Bi~(4)Ti~(3)O~(12)nanocrystals were synthesized at 140 °C, it consisted of the fine grains with 10–30 nm grain size. With increasing the reaction temperature, the flake-like Bi~(4)Ti~(3)O~(12)grains were formed and grew up. At high reaction temperatures (200–220 °C), they mainly consisted of the flake-like grains.