CAI Jiawen (1995-), male, Master candidate. E-mail: 21726110@zju.edu.cn
Polystyrene microspheres were prepared via an emulsion polymerization method and used as hard templates to form hollow mesoporous silica microspheres. The structural properties of silica microspheres were characterized by scanning electron microscopy, transmission electron microscopy, thermogravity analysis, small angle X-ray diffraction, nitrogen adsorption-desorption isotherm analysis. The effects of synthesis parameters (i.e., amounts of ammonia and silane precursor) on the microsphere size, thickness and mesopore size of silica microspheres were investigated, and the optimum reaction conditions were 6.25 mL of ammonia and 10 g of tetraethylorthosilicate. The hollow microspheres as a host are loaded with benzotriazole, and then coated with a two-layer polyelectrolyte shell by a layer-by-layer deposition process. The inhibitor release profile revealed that the polyelectrolyte shell lowered the release rate of benzotriazole-loaded hollow silica microspheres by 5 times.
| 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 |