In Situ Bond Modulation of Graphitic Carbon Nitride to Construct p–n Homojunctions for Enhanced Photocatalytic Hydrogen Production

Graphitic carbon nitride (g‐C 3 N 4 ) has recently emerged as an attractive photocatalyst for solar energy conversion. However, the photocatalytic activities of g‐C 3 N 4 remain moderate because of the insufficient solar‐light absorption and the fast electron–hole recombination. Here, defect‐modified g‐C 3 N 4 (DCN) photocatalysts, which are easily prepared under mild conditions and show much extended light absorption with band gaps decreased from 2.75 to 2.00 eV, are reported. More importantly, cyano terminal CN groups, acting as electron acceptors, are introduced into the DCN sheet edge, which endows the DCN with both n‐ and p‐type conductivities, consequently giving rise to the generation of p–n…

• MF
  Mitsubishi Foundation
• JS
  Japan Society for the Promotion of Science

  Award: 15F15070