摘要：采用多种添加剂,通过控制添加的剂量，实现了片状、须状、块粒 状纳米 AlOOH 在中性环境下的可控制备，打破了原来的必须在酸性环 境下制备纳米 AlOOH 晶须， 以及在碱性环境下制备片状纳米 AlOOH 的常规，建立了中性环境制备各种形貌的纳米 AlOOH 的新方法。 用扫 描电镜、透射电镜以及 X 射线衍射仪，分析了实验样品的形貌特点和 晶体结构特点。运用结晶动力学理论解释了 AlOOH 晶体生长取向及晶 体生长形态聚集方式， 揭示了晶体的最终形貌与生长过程中的生长基 元的内在联系。 

关键词：纳米晶体；外加剂；生长形态；生长基元

Abstract：The new methods of preparation of various AlOOH nano-crystal in neutral environment were researched，by using various additives and controlling the amount of additives， the controlled preparation of the re quired shape，sheet，and block-like AlOOH nano-crystal in neutral environ ment was achieved. Those prior conventions were broken that the required sheet AlOOH nano-crystal should be prepared in acidic environment， and the required sheet AlOOH nano-crystal should be prepared in alkaline en vironment. By scanning electron microscopy，transmission electron mi croscopy，and X-ray diffraction instrument，the characteristics of the sam ples’ morphology and crystal structure were analyzed. Based on the kinetic theory of crystallization，AlOOH nano-crystal growth orientation and the gathering way of growth shape were discussed，the internal relations be tween the final crystal morphology and the growth were revealed. 

Keywords：nano-crystal； additive； growth patterns； growth unit