期刊
CERAMICS INTERNATIONAL
卷 39, 期 8, 页码 8969-8973出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.04.096
关键词
ZnO; Microstructures; Hydrothermal synthesis; Photoluminescence
资金
- National Natural Science Foundation of China [51102128]
- Natural Science Foundation of Shandong Province [ZR2011EL005, ZR2010BL023]
- Young and Middle-Aged Scientists Research Awards Foundation of Shandong Province [BS2009CL055]
- Natural Science Foundation of Ludong University [LY20082902, LY2010006]
Dumbbell-shaped ZnO microstructures have been successfully synthesized by a facile hydrothermal method using only Zn(NO3)(2)center dot 6H(2)O and NH3 center dot H2O as raw materials at 150 degrees C for 10 h. The results from X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) show that the prepared ZnO samples exhibit dumbbell-shaped morphology and hexagonal wurtzite structure. The length of ZnO dumbbells is about 5-20 mu m, the diameters of the two ends and the middle part are about 1-5 mu m and 0.5-3 mu m, respectively. The dumbbell-shaped ZnO microstructures may be formed by self-assembly of ZnO nanorods with 1-5 mu m in length and 100-200 nm in diameter. The photoluminescence (PL) spectrum of dumbbell-shaped ZnO microstructures at room temperature shows three emission peaks at about 362, 384 and 485 nm. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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