Precursor-induced hydrothermal synthesis of flowerlike cupped-end microrod bundles of ZnO.
Precursor-induced hydrothermal synthesis of flowerlike cupped-end microrod bundles of ZnO.
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DOI：
10.1021/jp046655u
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发表时间：
2005-02
期刊：
影响因子：
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通讯作者：
Changlong Jiang;Wangqun Zhang;Guifu Zou;Weicao Yu;Y. Qian
中科院分区：
文献类型：
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作者：
Changlong Jiang;Wangqun Zhang;Guifu Zou;Weicao Yu;Y. Qian
以片状前驱体ZnCl 2（N2 H4）2为原料，在140 ℃水热反应12 h，合成了花状杯状ZnO微棒束;以相同的棒状前驱体为原料，在相同条件下合成了均匀的ZnO纳米棒。XRD分析表明，样品为六方晶系ZnO，晶胞常数a = 3.251 A，c = 5.206 A。FE-SEM和TEM显示了ZnO样品的形成过程。高分辨透射电镜（HRTEM）显示，花状的杯状ZnO微棒束沿[101]轴沿着生长。通过PL光谱观察到约396 nm的UV发射峰和约469 nm的蓝光带发射峰。提出了可能的形成机理。
Flowerlike cupped-end ZnO microrod bundles have been hydrothermally synthesized from precursor ZnCl2(N2H4)2 in sheet shape at 140 degrees C for 12 h; under the same conditions using the same precursor in rod shape, uniform ZnO nanorods were obtained. XRD pattern indicated the sample is ZnO with hexagonal cell contants a = 3.251 A and c = 5.206 A. FE-SEM and TEM show the formation process of the ZnO sample. HRTEM revealed that the flowerlike cupped-end ZnO microrod bundles grow along the [101] axis. The UV emission peak at approximately 396 nm and the blue band emission peak at approximately 469 nm were observed by PL spectra. A possible formation mechanism was proposed.