钒酸铋
沉积(地质)
材料科学
析氧
分解水
化学工程
光电子学
电子转移
纳米技术
电化学
化学
光化学
电极
物理化学
催化作用
光催化
古生物学
生物化学
沉积物
工程类
生物
作者
Xianlong Wang,Yan Zhang,Shengjue Deng,Shiwei Lin
标识
DOI:10.1016/j.ijhydene.2023.03.280
摘要
Bismuth vanadate (BiVO4) has attracted wide attention as photoanode in water-splitting photoelectrochemical (PEC) devices. However, its catalytic performance is greatly limited by the serious charge recombination on the surface states. Herein, borate modified BiVO4 plus additional CoPi cocatalyst (B-BVO/CoPi) is developed as photoanode for PEC cell via a simple soaking and electrodeposition process. Based on the electrochemistry tests and material characteristics, the borate groups [B(OH)4] – is able to effectively prevent the charge recombination, while the outer CoPi cocatalyst enhance the activity toward oxygen evolution reaction. Therefore, the designed B-BVO/CoPi photoanode could obtain a high current density of 2.67 mA cm−2 at 1.23 VRHE with an onset potential of 0.29 VRHE, much higher than pristine BiVO4 (0.78 mA cm−2, 0.52 VRHE). This work may provide a new insight for constructing multifunctional modified photoanodes for efficient solar conversion.
科研通智能强力驱动
Strongly Powered by AbleSci AI