联合体驱使生长法制备ZnO纳米棒及其表征

Preparation and Characterization of Well-aligned ZnO Nanorods by Aggregation-driven Growth

在常压环境下采用联合体驱使生长（Aggregation-driven growth）法在镀有ZnO纳米薄膜的医用盖玻片衬底和锌箔上制备了不同直径、高取向、密集生长的ZnO纳米棒阵列结构,发现平均直径与生长时间呈线性关系。X射线衍射（XRD）谱图中出现了较强的（002）峰,表明制备的纳米棒阵列具有高度c轴择优生长取向;高分辨透射电子显微镜（HRTEM）和选区电子花样衍射图谱（SAED）结果表明我们得到的单根纳米棒为沿（002）生长的单晶结构。分析确定盖玻片上的纳米棒阵列是以ZnO纳米薄膜缓冲层上的ZnO种子颗粒为成核点生长形成的。

Well-aligned ZnO nanorods with different diameters were synthesized on ZnO film coated cover glass substrates and Zn foil via aggregation-driven growth method at ambient pressure.The average diameter of ZnO nanorods increased proportionally with the increase of the time.The presence of the strong （002） diffraction peak in the XRD patterns indicated that the ZnO nanorods exhibited （002） preferred orientation and good crystal quality.HRTEM and SAED results showed that the ZnO nanorods are single-crystal.The nanorods on cover glass grew along the ZnO nanoparticles on ZnO film.