0D/2D Schottky junction synergies with 2D/2D S-scheme heterojunction strategy to achieve uniform separation of carriers in 0D/2D/2D quasi CNQDs/TCN/ZnIn2S4 towards photocatalytic remediating petroleum hydrocarbons polluted marine

The inherent advantages of 2D/2D S-scheme heterojunction contribute well to the photocatalysis due to efficient carriers’ separation kinetics and maintained redox ability. However, single 2D/2D S-scheme heterostructure fails to realize a perfect energy band alignment since the material contact interface is not perfectly contacted in real circumstance because of surface roughness and flexibility of 2D material. Herein, the 0D/2D Schottky junction synergies with S-scheme (S-S strategy) is proposed to improve weak links above. 0D Quasi CNQDs are utilized in 2D/2D S-scheme TCN/ZnIn2S4 to optimize the carriers’ separation kinetics in some area without 2D/2D close contact for TCN/ZnIn2S4. SI-XPS, UPS, and KPFM etc confirms such electron state. The CNQDs/TCN/ZnIn2S4 photocatalysts exhibits high degree of dissociation efficiency of photoinduced excitons due to S-S strategy. The results testify construction of S-S heterostructure would be an effective strategy for carriers’ modulation, and it will be a promising candidate for “green” elimination of oil spill on water surface.