Environmentally friendly supermolecule self-assembly preparation of S-doped hollow porous tubular g-C3N4 for boosted photocatalytic H2 production

Utilization of graphitic carbon nitride (g-C3N4)-based materials for photocatalytic hydrogen production to alleviate energy problems is a hot topic of research nowadays, thus the design and synthesis of highly efficient g-C3N4 materials remains a significant challenge. Herein, the sulphur-doped hollow porous tubular g-C3N4 (S-HPTCN) was successfully synthesized by a facile environmentally friendly supramolecule self-assembly strategy. Photocatalytic H2 evolution tests show that the as-prepared optimal S-HPTCN achieved a high H2 production of up to 22.04 mmol g-1 h-1 with the turnover frequency (TOF) of 429.7 h-1 and the apparent quantum efficiency (AQE) of as high as 7.8% at wavelength of 420 nm. The enhancement of remarkable photocatalytic H2 perfor-mance is mainly attributed to the synergetic effect of morphology and elemental doping. This research provides an effective design idea of developing high-efficient g-C3N4-based material for solar to hydrogen.