A novel Z-scheme CdLa₂S₄/MIL-88A(Fe) heterojunction was successfully designed and fabricated through loading CdLa₂S₄ on MIL-88A(Fe). The phase, morphologies, microstructures, and photoelectric characteristics of the constructed Z-scheme photocatalyst were investigated in detail. The photocatalytic activity of the obtained material under visible light was assessed via the photocatalytic H₂ generation. It was shown that the CdLa₂S₄ nanoparticles were uniformly anchored on the MIL-88A(Fe) microrods with an intimate interface. With such a unique structure, the obtained CdLa₂S₄/MIL-88A(Fe) composites demonstrated excellent photocatalytic H₂-evolution performance. When the content of MIL-88A(Fe) was 20 wt%, the CdLa₂S₄/MIL-88A(Fe) presented the maximal H₂-generation rate of 7677.5 μmol·h⁻¹·g⁻¹ (apparent quantum yield of 10.3% at 420 nm), which was nearly 7.73 times that of pristine CdLa₂S₄. The high photocatalytic activity was mainly contributed to the formed Z-scheme structure which facilitated the separation of photoexcited electron-hole pairs.

通过将CdLa ₂ S ₄负载在MIL-88A（Fe）上，成功设计并制备了一种新型的Z型CdLa ₂ S ₄ / MIL-88A（Fe）异质结。详细研究了所构建的Z型光催化剂的相，形貌，微观结构和光电特性。通过光催化H _2的产生来评估所获得的材料在可见光下的光催化活性。结果表明，CdLa ₂ S ₄纳米颗粒均匀地锚定在具有紧密界面的MIL-88A（Fe）微棒上。通过这样的独特结构，得到的CdLa ₂ S ₄/ MIL-88A（Fe）复合材料表现出出色的光催化H ₂演化性能。当MIL-88A（Fe）的含量为20 wt％时，CdLa ₂ S ₄ / MIL-88A（Fe）的最大H ₂生成速率为7677.5μmol·h ^-1 ·g ^-1（表观量子产率） （在420 nm处为10.3％），是原始CdLa ₂ S _4的近7.73倍。高的光催化活性主要归因于形成的Z-方案结构，其促进了光激发的电子-空穴对的分离。