Sunlight-assisted fabrication of a hierarchical ZnO nanorod array structure
Sunlight-assisted fabrication of a hierarchical ZnO nanorod array structure
复制标题
阳光辅助制造分层 ZnO 纳米棒阵列结构
DOI：
10.1039/b907231b
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发表时间：
2009-01-01
期刊：
影响因子：
3.1
通讯作者：
Qian, Yitai
中科院分区：
文献类型：
--
作者：
Shi, Liang;Bao, Keyan;Qian, Yitai
通过在阳光照射下对锌酸盐离子水溶液和锌箔混合物进行简单处理，获得了由有序纳米棒阵列组成的 ZnO 分级结构。所制备的ZnO纳米棒均为单晶，具有均匀的[0001]择优生长方向，平均直径约为40 nm，长度约为300 nm。人们认为，阳光产生了预制ZnO纳米棒自组装成板的驱动力，板作为二次异质成核的基底，随后晶体生长导致ZnO纳米棒阵列的形成。基于对照实验结果，讨论了ZnO分级纳米棒阵列结构的形成机制。对所制备的 ZnO 产品进行了拉曼光谱、阴极发光和紫外-可见吸收光谱。
A ZnO hierarchical structure built up of a well ordered nanorod array was obtained by a simple treatment of zincate ion aqueous solution and a zinc foil mixture with sunlight irradiation. The as-prepared ZnO nanorods are all single crystalline with a uniform [0001] preferential growth direction and have an average diameter of approximately 40 nm and a length of approximately 300 nm. It is believed that sunlight gave rise to the driving force for the preformed ZnO nanorod to self-assemble into plates, which served as the substrate for secondary heterogeneous nucleation, and subsequently the crystal growth resulted into formation of a ZnO nanorod array. The formation mechanism of the ZnO hierarchical nanorod array structure was discussed, based on controlled experiment results. Raman spectroscopy, cathodoluminescence and UV-Vis absorbance spectra of the as-prepared ZnO product have been performed.