The strategical integration of membrane water filtration with semiconductor photocatalysis presents a frontier in deep purification with a self-cleaning capability. However, the membrane fouling caused by the cake layer of the reclaimed TiO₂ nanoparticles is a key obstacle. Herein, mesoporous WO₃/TiO₂ spheres (∼450 nm in diameter) consisting of numerous self-assembled WO₃-decoated anatase TiO₂ nanocrystallites are successfully prepared via a facile wet-chemistry route. The decoration of monolayered WO₃ significantly affects the surface, photocatalytic, and optical properties of original mesoporous TiO₂ spheres. XRD and Raman analyses show the presence of monolayered WO₃ suppresses the crystal growth of TiO₂ during calcination process, significantly improves the surface acidity, and causes an obvious red shift in absorption edge. These favorable textural properties, coupling the enhanced interfacial charge carrier separation, render mesoporous WO₃/TiO₂ spheres with a superior photocatalytic activity in degradation of methylene blue under UV, visible, and solar light irradiations. The optimal molar ratio of W/Ti is examined to 6%. The synthesized mesoporous WO₃/TiO₂ spheres also show much higher flux during membrane filtration in both dead-end and cross-flow modes, suggesting a promising photocatalyst for concurrent membrane filtration and solar photocatalysis.

膜水过滤与半导体光催化的战略性集成为具有自动清洁功能的深度净化提供了一个前沿。然而，由回收的TiO ₂纳米颗粒的滤饼层引起的膜污染是关键的障碍。在此，通过简便的湿化学方法成功地制备了由许多自组装的WO ₃涂层的锐钛矿型TiO ₂纳米微晶组成的介孔WO ₃ / TiO ₂球（直径约450 nm）。单层WO ₃的装饰会显着影响原始中孔TiO ₂的表面，光催化和光学性能领域。XRD和拉曼分析表明，单层WO ₃的存在抑制了煅烧过程中TiO ₂的晶体生长，显着提高了表面酸度，并引起吸收边缘的明显红移。这些有利的质地特性，加上增强的界面电荷载体分离，使得介孔WO ₃ / TiO ₂球在紫外线，可见光和太阳光照射下对亚甲基蓝的降解具有优异的光催化活性。W / Ti的最佳摩尔比为6％。合成介孔WO ₃ / TiO ₂ 在死端和横流模式下，膜过滤过程中，球形浮球还显示出更高的通量，这表明有希望的光催化剂可同时用于膜过滤和太阳光催化。