Synthesis and photocatalytic CO2 reduction performance of metalloporphyrin and H5[PMo10V2O40]∙34.5H2O composite catalyst

Based on the structural analogy to chlorophyll, a series of bio-inspired Z-scheme heterojunction photocatalysts yPMo10V2/CoTPyP were constructed by integrating metalloporphyrin CoTPyP with H₅[PMo10V2O₄₀]·34.5H₂O. The optimized 0.1PMo10V2/CoTPyP heterojunction exhibits remarkable photocatalytic CO2 reduction performance, achieving CO production rate of 316.88 μmol·g⁻¹·h⁻¹, which is 3.7 and 5.9 times higher than those of CoTPyP and H₂TPyP, respectively. Systematic characterization confirms that the Z-scheme electron transfer mechanism effectively promotes charge separation while maintaining high redox capability. This work demonstrates the feasibility of mimicking natural photosynthesis through rational material design and provides valuable insights for developing efficient artificial photosynthetic systems.