Porous graphitic carbon nitride with high concentration of oxygen promotes photocatalytic H2 evolution† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d2ra05662c

ABSTRACT: Porous structure design and the content regulation of heteroelements have been proved to be effective strategies to boost photocatalytic H2 generation activity of graphitic carbon nitride (g-C3N4) based photocatalyst. Herein, a series of porous graphitic carbon nitride with high concentration of oxygen (g-C3N4–O) photocatalysts were synthesized via in situ polymerization process using colloidal SiO2 as oxygen source. The content of oxygen within the g-C3N4–O photocatalysts could be tuned by adjusting the amount of added colloidal SiO2 during the preparation procedure. The introduced oxygen replaced two-coordinated nitrogen atom, influencing band edge position and localized electron distribution, thereby enhancing visible light harvesting and photoelectric conversion. As a result, the g-C3N

SUBMITTER: Jia R 

PROVIDER: S-EPMC9687292 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature