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Nanometer-sized MnFe2O4 powders were synthesized by detonation of two kinds of emulsion explosives with different oxygen balance (OB) values. The phase structure and the different components of the two samples obtained from the emulsion explosives were characterized and compared by X-ray diffraction (XRD). According to the results of DSC and XRD, the samples were heated at 200 ℃, 260 ℃, 280 ℃, 500 ℃ for 1 h and 360 ℃ for 40 min respectively. And at 280 ℃, pure nanometer-sized MnFe2O4 powders were obtained, their morphology was observed by transmission electron microscopy (TEM). The results of the experiments indicate that detonation powders of the EE with negative OB value are relatively purer than those of the EE with zero OB value, and 280 ℃ is a suitable temperature for thermal treatment. Detonation method has the advantages of convenience and rapidness for nano-particles synthesis and simplity for post-thermal treatment.
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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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