A series of LaFeO₃/WO₃ photocatalysts with different mass fraction were conceived and prepared by citric acid-assisted hydrothermal method. Including its structure, surface morphology, photornetrics and charge transfer, etc. were analyzed, which indicated that the establishment of a direct Z-scheme could enhance the photocatalytic performance significantly. Among them, the 15%-LaFeO₃/WO₃ photocatalyst displayed the best photocatalytic performance (up to 94.15%) under 3 h visible light, even after 5 cycles, also shown the excellent photocatalytic stability. The excellent photocatalytic activity of constructed direct Z-scheme photocatalyst is mainly based on the physically more feasible migration of photogenerated carriers. In the other hand, according to the active species capture experiment and ESR spectra, the phenol degradation was mainly attributed to the oxidation reaction of ·OH and h⁺. Therefore, the photocatalytic reaction mechanism, degradative pathway and intermediate products under the visible light of the direct Z-scheme photocatalysts for phenol degradation were put forward.

通过柠檬酸辅助水热法构思并制备了一系列不同质量分数的LaFeO ₃ /WO ₃光催化剂。包括其结构、表面形貌、光电子学和电荷转移等方面的分析表明，直接Z-scheme的建立可以显着提高光催化性能。其中，15%-LaFeO ₃ /WO ₃光催化剂在3 h 可见光，即使经过 5 次循环，也表现出优异的光催化稳定性。构建的直接 Z 型光催化剂优异的光催化活性主要基于光生载流子在物理上更可行的迁移。另一方面，根据活性物种捕获实验和ESR光谱，苯酚降解主要归因于·OH和h ⁺的氧化反应。因此，提出了直接Z型光催化剂在可见光下降解苯酚的光催化反应机理、降解途径和中间产物。