کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6454280 | 1418815 | 2017 | 5 صفحه PDF | دانلود رایگان |
- Ultrathin C3N4 nanosheets serve as efficient cocatalysts for photoelectrochemical water splitting.
- The H2 generation capability is nearly 12 times with respect to the pristine BiVO4 photoanodes.
- Ultrathin C3N4 could effectively transfer and store holes for water oxidation.
- This work may provide an effective approach for enhancing photoelectrochemical properties.
Here, we demonstrate that ultrathin graphitic-phase C3N4 nanosheets (g-C3N4-NS) could serve as an efficient metal-free cocatalyst for improving oxygen evolution activity on nanoporous BiVO4 photoanode. More specifically, as compared with pure BiVO4 photoanode, ultrathin g-C3N4 nanolayers not only suppress the surface charge recombination of BiVO4, but also effectively transfer and store holes for water oxidation. As expected, the ultrathin graphitic-phase C3N4 cocatalyst modified BiVO4 photoanode exhibited significantly improved photocurrent density and H2 generation capability, nearly 7 and 12 times with respect to the pristine BiVO4 under the same conditions. These results demonstrate an effective approach for the design and construction of low-cost and highly efficient PEC systems.
Here, we demonstrate that ultrathin graphitic-phase C3N4 nanosheets (g-C3N4-NS) could serve as an efficient metal-free cocatalyst for improving oxygen evolution activity on nanoporous BiVO4 photoanode. More specifically, as compared with pure BiVO4 photoanode, ultrathin g-C3N4 nanolayers not only suppress the surface charge recombination of BiVO4, but also effectively transfer and store holes for water oxidation. As expected, the ultrathin graphitic-phase C3N4 cocatalyst modified BiVO4 photoanode exhibited significantly improved photocurrent density and H2 generation capability, nearly 7 and 12 times with respect to the pristine BiVO4 under the same conditions. These results demonstrate an effective approach for the design and construction of low-cost and highly efficient PEC systems.242
Journal: Applied Catalysis B: Environmental - Volume 205, 15 May 2017, Pages 19-23