Self‐Assembly Synthesis of Oxygen and Sulfur Co‐Doped Porous Graphitic Carbon Nitride Nanosheets for Boosting CO2 Photoreduction
Year: 2024
Type: article
Abstract: Graphitic carbon nitride (CN) has garnered considerable attention in the field of visible‐light CO2 photoreduction, but its efficiency remains limited by the intrinsic π‐conjugated skeleton. Here, O and S were co‐doped CN (O, S/CN) by a facile “hydrolysis + calcination” approach to modulate the physicochemical and electronic structure. Distinctive from S doped CN (SCN), O, S/CN owned porous layer structure with several nanosheets and less SO42− groups on the surface. The amount of heteroatom‐doping was achieved by changing the hydrothermal temperature. The optimum O, S/CN‐80 achieved moderate CO production rate of 1.29 μmol g−1 h−1, which was 3.79 times as much as SCN (0.34 μmol g−1 h−1). The O and most S atoms were substitutionally doped and the effect of S doped state on the improved efficiency of CO generation in O, S/CN was also explored based on the theoretical calculations. This work provides an inspiration to develop efficient dual‐doped CN photocatalysts for photocatalytic CO2 reduction.
Source: ChemSusChem
Authors: Shihai Cao, Haocheng Yang, Fan Zeng, Yao Lu, Huan Chen, Fang Jiang
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4402710114