前驱体诱导水热合成ZnO花状杯状端部微棒束

Precursor-induced hydrothermal synthesis of flowerlike cupped-end microrod bundles of ZnO.

作者信息

Jiang Changlong, Zhang Wangqun, Zou Guifu, Yu Weicao, Qian Yitai

机构信息

Structure Research Laboratory and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.

出版信息

J Phys Chem B. 2005 Feb 3;109(4):1361-3. doi: 10.1021/jp046655u.

DOI:10.1021/jp046655u

PMID:16851103

Abstract

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.

摘要

通过水热法在140℃下由片状前驱体ZnCl2(N2H4)2合成了花状杯状端部的ZnO微棒束，反应12小时；在相同条件下使用棒状的相同前驱体，获得了均匀的ZnO纳米棒。XRD图谱表明样品为ZnO，其六方晶胞常数a = 3.251 Å，c = 5.206 Å。FE-SEM和TEM显示了ZnO样品的形成过程。HRTEM表明花状杯状端部的ZnO微棒束沿[101]轴生长。通过PL光谱观察到在约396 nm处的紫外发射峰和约469 nm处的蓝带发射峰。提出了一种可能的形成机制。