Interlayer Ag Nanoparticle-Anchored Mo, W: BVO/NiCo2O4 Heterojunctions for Synergistic Enhancement of Photoelectrochemical Water Splitting Activity
【Abstract】
spinel oxide (NiCo2O4) is introduced as an emerging material for photocatalytic oxygen precipitating catalys. The NiCo2O4 hollow spheres prepared by the template method combine a large specific surface area with high electrical conductivity and exhibit excellent catalytic properties. Building on this significant improvement, our research aims to enhance the photoelectrochemical performance of Mo, W: BVO/NiCo2O4 heterojunctions by integrating the hollow NiCo2O4 during BiVO4 fabrication, thereby improving charge transfer and water oxidation kinetics of Mo, W: BVO/NiCo2O4 photoanodes. Additionally, the middle layer Ag deposition avoids oxidation issues during the PEC process, resulting in the most significant enhancement of photocurrent. Compared to a reversible hydrogen electrode, the obtained photoanodes achieve a photocurrent density of 5.30 mA cm-2 at 1.23 V vs. RHE. Through experimental and theoretical demonstrations, our work provides novel insights into modifying BiVO4 photoanodes using oxygen precipitating catalysts and noble metals to improve their photoelectrochemical performance.
【Author】
Wei Zhai, Lin Wang, Shuai Chu, Lei Ding, Jie Li, Hai-Chao Chen, Zhengbo Jiao
【Journal】
CrystEngComm(IF：3.4) Time：2024-04-26
