The edge-epitaxial growth of yellow g-C3N4 on red g-C3N4 nanosheets with superior photocatalytic activities

Abstract

g-C₃N₄ has been used as a photocatalyst to overcome the issues of environmental crises and energy shortages. Here, red g-C₃N₄ nanosheets (E_g: ∼ 1.89 eV) were used as seeds for the edge-epitaxial growth of yellow g-C₃N₄ (E_g: ∼ 2.59 eV) to form type II heterostructures. The heterostructures revealed superior photocatalytic activity for enhanced H₂ (3996 μmol g⁻¹ h⁻¹), CO (3.8 μmol g⁻¹ h⁻¹), and CH₄ (1.8 μmol g⁻¹ h⁻¹) evolution.