Developing BiVO4 photoanode with efficient carrier transfer and fast water oxidation kinetics is the permanent pursuit to achieve the state-of-art solar-driven photoelectrochemical (PEC) water splitting. The capacity to increase the PEC activity of BiVO4 by loading oxygen evolution co-catalysts (OECs) has been proven, however it suffers from sluggish charge carriers dynamics brought on by the complicated interface between BiVO4 and OECs as well as poor long-term durability. Herein, we connected OECs (NiFeOx) and photoanode with a Al-O bridge for bettering the PEC performance of BiVO4. The Al-O bridge served as a channel to extract hole from BiVO4 to NiFeOx, thus boosting charge carriers′ separation and preventing BiVO4 from photo-corrosion. The Al-O bridging photoanode (NiFeOx/Al2O3/BiVO4) demonstrated a high photocurrent density of 5.87 mA/cm2 at 1.23 V vs. RHE and long-term photostability in comparison to NiFeOx/BiVO4 photoanode. This study proposes a unique technique to boost charge carriers′ separation between BiVO4 and OECs for high-efficiency solar-driven PEC water splitting.
| 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 |