Marmatite was calcined and then used as photocatalyst to degrade organic dye methylene blue (MB) under ultraviolet (UV) light irradiation. The degradation mechanism of this photocatalyst was investigated by using UV-Visible diffuse reflectance spectroscopy (UV-Vis DRS) and performing free radical capture experiments. It is found that the marmatite calcined at 660 ℃ exhibits a great photocatalytic property, with the degradation rate of MB up to 98.46% within 240 min. In the calcined marmatite products, the ternary heterojunction is more conducive to the effective separation of photogenerated charge carriers than the binary heterojunction, thus leading to an improved photocatalytic performance.
| 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 |