Growth of ZnO nanostructures with different morphologies by using hydrothermal technique
Growth of ZnO nanostructures with different morphologies by using hydrothermal technique
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DOI：
10.1021/jp063312i
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发表时间：
2006-10-19
影响因子：
3.3
通讯作者：
Fan, Xiwu
中科院分区：
文献类型：
--
作者：
Tong, Yanhong;Liu, Yichun;Fan, Xiwu
ZnO纳米结构，包括纳米塔、纳米火山、纳米棒、纳米管和纳米花，已经通过水热技术生长出来。大多数 ZnO 纳米结构显示出完美的六边形横截面和刻面良好的顶面和侧面。讨论了基本化学和生长机制。通过增加反应时间，由于奥斯特瓦尔德熟化过程和络合物的选择性吸附，形成了火山状和管状ZnO结构。通过使用种子层，由于成核势垒降低、界面丰富以及表面粗糙度增加，获得了密集排列、规则取向的ZnO纳米棒。
ZnO nanostructures, including nanotowers, nanovolcanoes, nanorods, nanotubes, and nanoflowers, have been grown by using the hydrothermal technique. Most of the ZnO nanostructures show the perfect hexagonal cross section and well-faceted top and side surfaces. The basic chemistry and growth mechanism are discussed. By increasing the reaction time, the volcano-like and tube-like ZnO structures were formed due to the Ostwald ripening process and the selective adsorption of the complexes. By using the seed layer, the dense-arrayed, regular oriented ZnO nanorods were obtained due to the decreased nucleation barrier and the abundant interfaces as well as the increasing surface roughness.