Preparation of Co2+-doped ZnAl2O4 nanoparticles by citrate sol-gel method

被引:58
作者
Duan, XL [1 ]
Yuan, DR [1 ]
Sun, ZH [1 ]
Luan, CN [1 ]
Pan, DY [1 ]
Xu, D [1 ]
Lv, MK [1 ]
机构
[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
基金
中国国家自然科学基金;
关键词
nanostructures; sol-gel synthesis; x-ray diffraction; luminescence;
D O I
10.1016/j.jallcom.2004.05.059
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Nano-sized ZnAl2O4 particles doped with Co2+ ions were prepared by a citrate sol-gel method. The precursor was prepared from metal nitrates and citric acid and heat-treated at 600-900degreesC. The nanocrystalline Co2+:ZnAl2O4 is characterized by X-ray diffraction transmission electron microscopy and luminescence spectroscopy. The precursor gel began to crystallize to the ZnAl2O4 nanopowders at 600degreesC. The average particles size was estimated as 16-30 nm in the temperature range of 600-900degreesC. The emission spectra of Co2+ZnAl2O4 in the visible region were characterized by the tetrahedrally coordinated Co2+. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:311 / 314
页数:4
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