Preparation of Co2+-doped ZnAl2O4 nanoparticles by citrate sol–gel method
| Autor: | Dongying Pan, Caina Luan, Zhihong Sun, Dong Xu, Xiulan Duan, Duorong Yuan, Mengkai Lv |
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| Rok vydání: | 2005 |
| Předmět: |
Materials science
Mechanical Engineering Metals and Alloys Mineralogy Nanoparticle Nanocrystalline material chemistry.chemical_compound chemistry Mechanics of Materials Transmission electron microscopy X-ray crystallography Materials Chemistry Particle size Luminescence Citric acid Nuclear chemistry Sol-gel |
| Zdroj: | Journal of Alloys and Compounds. 386:311-314 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2004.05.059 |
| Popis: | Nano-sized ZnAl 2 O 4 particles doped with Co 2+ ions were prepared by a citrate sol–gel method. The precursor was prepared from metal nitrates and citric acid and heat-treated at 600–900 °C. The nanocrystalline Co 2+ :ZnAl 2 O 4 is characterized by X-ray diffraction, transmission electron microscopy and luminescence spectroscopy. The precursor gel began to crystallize to the ZnAl 2 O 4 nanopowders at 600 °C. The average particles size was estimated as 16–30 nm in the temperature range of 600–900 °C. The emission spectra of Co 2+ :ZnAl 2 O 4 in the visible region were characterized by the tetrahedrally coordinated Co 2+ . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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