Circumventing bottlenecks in H₂O₂ photosynthesis over carbon nitride with iodine redox chemistry and electric field effects.

ABSTRACT: Artificial photosynthesis using carbon nitride (g-C₃N₄) holds a great promise for sustainable and cost-effective H₂O₂ production, but the high carrier recombination rate impedes its efficiency. To tackle this challenge, we propose an innovative method involving multispecies iodine mediators (I^-/I₃^-) intercalation through a pre-photo-oxidation process using potassium iodide (suspected deteriorated "KI") within the g-C₃N₄ framework. Moreover, we introduce an external electric field by incorporating cationic methyl viologen ions to establish an auxiliary electron transfer channel. Such a unique design drastically improves the separation of photo-generated carriers, achieving an impressive H

SUBMITTER: Bai CW 

PROVIDER: S-EPMC11535034 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature