| 共沉淀法合成Cr3+∶Al2O3纳米粉体及其发光性能研究 |
| Preparation and Luminescent Properties of Cr3+∶Al2O3 Powders by Precipition Method |
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| 摘要: |
| 关键词: Cr3+:Al2O3 共沉淀法 纳米粉体 发光 |
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| Abstract: NH4MO(OH)HCO3(M=Al3+， Cr3+) precursors were synthesized by a co-precipition method with the solutions of mixed nitrates as starting materials and ammonium bicarbonate as precipitator. The precursors and powders sintered at various temperatures were characterized by thermogravimetry/differential thermal analysis(TG/DTA)， infrared spectroscopy(IR)， X-ray diffractormetry(XRD)， transmittion electron microscopy(TEM). The luminescent spectra of Cr3+∶Al2O3 nano-powder was measured. The XRD results show that the pure-α-Al2O3 phase can be obtained at 1 200 ℃. TEM analysis indicates that the nano-powders about 20～30 nm are well-dispersed and less-aggregated. Spectral analysis demonstrates that the sample has good photoluminescence. |
| Keywords: Cr3+∶Al2O3 co-precipition method nano-powders luminescence |
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| 米晓云,张希艳,卢 歆,柏朝晖,卢利平.共沉淀法合成Cr3+∶Al2O3纳米粉体及其发光性能研究[J].无机化学学报,2007,23(10):1819-1823. |
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