Nitrogen‐Doped Graphene Oxide Quantum Dots as Photocatalysts for Overall Water‐Splitting under Visible Light Illumination

Abstract

Nitrogen-doped graphene oxide quantum dots exhibit both p- and n-type conductivities and catalyze overall water-splitting under visible-light irradiation. The quantum dots contain p-n type photochemical diodes, in which the carbon sp² clusters serve as the interfacial junction. The active sites for H₂ and O₂ evolution are the p- and n-domains, respectively, and the reaction mimics biological photosynthesis.