中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
Vol. 20 No. 1 January 2010 |
(College of Science, Civil Aviation University of China, Tianjin 300300, China)
Abstract:With Zn(NO3)2·6H2O and NaOH as starting materials, a novel nest-like ZnO nanostructure was successfully synthesized by a solvo-thermal method. The products were characterized by X-ray diffraction, photoluminescence and scanning electron microscopy. The growth mechanism of the nest-like ZnO was discussed. The results show that the as-synthesized samples have a wurtzite structure, with a weak UV emission at about 395 nm, a green emission at around 557 nm and a blue-green emission at 453 nm. SEM investigation reveals that the growth route of the nest-like ZnO can be considered involving three stages: nano-sized ZnO sheet can be firstly achieved, then outspreads quickly and increasingly becomes a long fishbone-like strip with many branch sheets, and finally these sheets curl into a nest-like structure.
Key words: ZnO; morphology; solvo-thermal synthesis; growth mechanism; nest-like structure