Full
LIU Jianke (1966-), male, Professor. E-mail: liujk@sust.edu.cn
Outline
Fe3+ doped α-Al2O3 particles with average sizes of 12 nm, 82 nm, and 229 nm and the same Fe content were prepared by a chemical precipitation method. The lattice parameters, microstructure, energy gap, and the luminescence performance were investigated. The results show that Fe3+ doped α-Al2O3 particles with different sizes are pure α-Al2O3 phases. The energy gap decreases and the lattice parameters first decrease and then increase with increasing the particle size. The lattice parameters of the sample with an average particle size of 12 nm are a=b=0.478 3 nm, c=1.304 7 nm, the energy gap is 4.06 eV, and the sample exhibits a good luminescence performance under 305 nm excitation. Moreover, Fe3+ doped α-Al2O3 nanoparticles with an average particle size of 12 nm disperse well and have a narrow size distribution (5-55 nm), and can form a stable colloid suspension in ultrapure water.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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