Cd0.5Zn0.5S Quantum Dot-Modified CdIn2S4 Nano-octahedron as the 0D/3D Hybrid Heterojunction for CO2 Photoreduction

Constructing heterostructures and designing excellent structures to simulate natural photosynthesis are effective ways to efficiently and selectively convert CO2 into products with high energy. Herein, a novel 0D/3D heterostructure composed of Cd0.5Zn0.5S quantum dots and CdIn2S4 nano-octahedron was resoundingly fabricated via a simple solvothermal-coprecipitation method. The optimal yields of CO2 photoreduction to CO and CH4 over the Cd0.5Zn0.5S/CdIn2S4 composite material could reach up to 14.07 and 4.23 mu mol/g/h, respectively, which was primarily due to the synergistic effect of the 0D/3D heterostructure and unique morphology, thus accelerating the transfer of light-induced carriers. In addition, the asfabricated composite exhibited excellent stability and weaker photocorrosion. Hence, this work could provide a simple and efficient route for the design and construction of photocatalysts with superior activity for CO2 photoreduction.

Automated summary

Constructing heterostructures and designing excellent structures to simulate natural photosynthesis are effective ways to efficiently convert CO2 into high-energy products. The novel 0D/3D heterostructure composed of Cd0.5Zn0.5S quantum dots and CdIn2S4 nano-octahedron exhibits superior CO2 photoreduction activity and stability due to the synergistic effect of the heterostructure and unique morphology.