Carbon nitride with simultaneous porous network and O-doping for efficient solar-energy-driven hydrogen evolution

This paper describes a facile precursor pre-treatment method, by forming hydrogen bond-induced supramolecular aggregates, to fabricate g-C3N4 with simultaneous novel porous network structure and O-doping. Experimental and DFT computation confirm simultaneous porous network structure and O-doping have synergetic promotion on light harvesting and charge separation. As a result, it shows remarkably higher HER activity (AQE=7.8% at 420 nm) than bulk and even 3D porous g-C3N4. 560