摘要
以Zn(NO3)2·6H2O和N2H4·H2O为原料,采用水热法在180℃下保温24 h,制备了花状和菜花状的氧化锌(ZnO)纳米棒束.用XRD、SEM、FE_SEM及HR_TEM对样品进行了表征.XRD结果表明所制样品为六方纤维锌矿结构的ZnO晶体;SEM及FE_SEM测试结果显示ZnO晶体的形貌呈花状和菜花状,且由直径约100 nm的纳米棒组成;HR_TEM结果表明单晶纳米棒沿[0001]方向生长最快.结合测试结果,分析、讨论了花状和菜花状ZnO纳米棒束的生长机理及N2H4·H2O在ZnO生长过程中的作用.
The flower-like and cauliflower-like ZnO nanorod clusters have been prepared via simple hydrothermal method at 180℃ for 24 hrs by using zinc salts and hydrazine hydrate （N2H4·H2O）. The microstructures of the as-synthesized sample have been studied by means of X-ray diffraction, scanning electron microscope, field-emission scanning electron microscope and highresolution transmission electron microscopes. The results show that the as-synthesized ZnO crystals are flower-like, cauliflower-like and composed of one-dimensional nanorods with hexagonal wurtzite structure. It is also shown that the nanorod constituents grow preferentially along the [0001] direction. A growth mechanism of the flower-like and cauliflower-like ZnO clusters and the importance of N2H4 are suggested and explained in detail.
出处
《西安工业学院学报》
2005年第2期144-149,共6页
Journal of Xi'an Institute of Technology
基金
国家自然科学基金(50336040)~~
