Our recent work was concerned mainly with the formation and industrial application of dispersive nano-particles and whiskers. A general dissolution-precipitation way was developed to synthesis dispersive nano-particles (CaCO₃, Mg(OH)₂, ZnO and CaSO₄, etc.) by controlling the crystallinity and the surface properties of the nano-particles. A general method induced by the inorganic ions as SO₄^2- and OH^-, etc. or by the surfactants was also developed to promote the one-dimensional growth of the whiskers (513MOS, Mg(OH)₂, Mg₂B₂O₅, AlOOH, ZnO and CaSO₄.0.5H₂O, etc.) at moderate hydrothermal conditions.

Fig. 1 Theoretical morphology of Mg(OH)₂ at 0K(a) and 473K(b); structure (c) and morphology (d) of 513MOS; morphology of Mg(OH)₂(e), MgO(f), AlOOH(g) and ZnO (h) whiskers.

*  Project supported by the National Science Foundation of China (No. 51174125 and No. 51234003) and National Hi-Tech Research and Development Program of China (863 Program, 2012AA061602)

^#   Corresponding author. E-mail: xianglan@mail.tsinghua.edu.cn

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1. Synthesis of ZnO Nano-whiskers with Varying Diameters from ε-Zn(OH)₂