Improved Photocatalytic Hydrogen Evolution using Sulfur‐Doped Graphite‐like Carbon Nitride (S‐G‐C3N4) Photocatalyst

Abstract Hydrogen (H 2 ) production has received great attention because of its environmental‐friendly nature. Particularly, photocatalytic H 2 production has been proven most efficient technology. Graphite‐like carbon nitride has excellent photocatalytic properties and has been widely used for H 2 production. Herein, we report the fabrication of sulfur‐doped graphitic carbon nitride (S‐g‐C 3 N 4 ) and its application in photocatalytic H 2 production. The as‐synthesized S‐g‐C 3 N 4 was authenticated by various advanced physical‐chemical techniques such as SEM, PXRD, and XPS. The optical properties of the as‐synthesized S‐g‐C 3 N 4 was checked by UV‐vis absorption spectroscopy. Further, as‐synthesized S‐g‐C 3 N 4 was explored as photocatalyst for H 2 production. Effect of photocatalyst doses and type of solvents have been studied. The obtained results show that improved H 2 production of 6002.54 μmol/g can be achieved via S‐g‐C 3 N 4 photocatalyst. The as‐synthesized S‐g‐C 3 N 4 also exhibit good stability, H 2 evolution rate of 1200.5 μmol/g.h, and reasonable reusability.