In situ loading amorphous CoSx on N-doped g-C3N4 through light assisted synthesis for enhanced photocatalytic hydrogen generation

• Published in: International journal of hydrogen energy 2023-04, Vol.48 (37), p.13843-13850
• Main Authors: Deng, Puhui, Xi, Chuanjun, Chen, Ning, Shi, Hongpeng, Zhang, Linping, Hou, Yu
• Format: Article
• Language: English
• Subjects: Cobalt sulfide; Doping; Graphite carbon nitride; Hydrogen production; Photocatalyst
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2022.12.282

Loading co-catalysts are an effective strategy to break the confinement of bulk carbon nitride in photocatalysis. Employing this strategy, N-doped g-C3N4 decorated with CoSx was successfully prepared through a photochemical synthesis route. The optimum hydrogen evolution performance of N-CN-CoSx-4 was 1757 μmol g−1 h−1 under visible light irradiation. Superior interfacial carrier transfer properties and improved light absorption of N-CN-CoSx-4 could elucidate its better photocatalytic activity. This research offers a reference for the construction of high-efficiency, stable and low-priced photocatalysts. CoSx fabricated N-doped g-C3N4 was successfully prepared using thermal condensation and photodeposition. The composition material achieves excellent hydrogen evolution performance which benefits from the improvement of optical absorption and accelerated interfacial charge transfer. [Display omitted] •CoSx was fabricated on N-doped g-C3N4 by photodeposition.•N-doping and loading CoSx promote the photocatalytic H2 evolution activity of g-C3N4.•N-doping improves the light absorption and introducing CoSx accelerates the interfacial electron transfer.