Shear Stress Triggers Ultrathin-Nanosheet Carbon Nitride Assembly for Photocatalytic H 2 O 2 Production Coupled with Selective Alcohol Oxidation

Coupled photocatalysis without cocatalysts can maximize the utilization of photons and atoms, which puts forward higher demands on photocatalysts. Polymeric carbon nitride (CN) has become the most promising photocatalyst, but still suffers from major drawbacks of insufficient catalytic sites and low quantum efficiency. Herein, we report a fluid shear stress-assisted molecular assembly to prepare ultrathin-nanosheet-assembled acanthosphere-like CN (ASCN) with nitrogen vacancy (Nv) and carbonyl modification. Shear stress breaks the stacking interactions between layers and cuts the stacked structure into ultrathin layers, which are further reassembled into acanthosphere bundles driven by “centrifugal force”.…

• NN
  National Natural Science Foundation of China

  Awards: 52273264, U20A20250