Nucleation and growth of BaFxCl2-x nanorods.
Different ratios and sizes of Ba2F3Cl (BaFxCl2-x, x=1.5) nanorods and nanowires and orthorhombic BaF2 (BaFxCl2-x, x=2) nanorods were prepared by using a liquid-solid-solution approach at 160 approximately 180 degrees C. The processes and results of the experiments conducted to prepare monodisperse Ba2F3Cl nanorods and nanowires showed that the specific surface area increased as the initial concentrations were multiplied. Based on this fact, a mechanism for the nucleation and growth processes of these nanocrystals that have a variety of enlarged sizes was substantiated in view of the surface chemical thermodynamics (SCT). In this SCT mechanism, the specific surface energy takes into account both the surfactant oleic acid and the nanocrystal surface, and is dominated by the chemical potential of the adsorbate.
Xie
Ting
T
Department of Chemistry, Tsinghua University, Beijing, 100084 (PR China).
Li
Shuai
S
Wang
Wenbei
W
Peng
Qing
Q
Li
Yadong
Y