DAI Kai (1980-), male, Ph.D., Professor. E-mail: daikai940@chnu.edu.cn
Ag surface plasmon resonance promoted step-scheme (S-scheme) SnNb2O6/Ag3PO4 heterojunctions were constructed via simple chemical deposition and precipitation. The samples were characterized by X-ray diffractometer, field-emission scanning electron microscope, high resolution transmission electron microscope, X-ray photoelectron spectrometer, UV-Vis diffuse reflectance spectrometer and photoluminescence spectrometer. The photocatalytic activities of SnNb2O6, Ag3PO4 and SnNb2O6/Ag3PO4 composites can be determined via degradation experiments. The results show that the SnNb2O6/Ag3PO4 composite possesses an optimum degradation performance in the photocatalytic degradation of methylene blue. Besides, the pseudo-first-order rate constant (Kapp) of SnNb2O6/Ag3PO4 is 0.313 min-1, which is 13.1 times and 4.8 times greater than that of SnNb2O6 and Ag3PO4, respectively. Also, Ag surface plasmon resonance-promoted SnNb2O6/Ag3PO4 S-scheme heterojunction can accelerate the separation of electron-hole pairs, thereby enhancing the redox reaction capability of the whole system.
| 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 |