用于高级氧化过程的光催化剂纳米颗粒在聚偏氟乙烯膜上的化学气相沉积

De Filpo Giovanni, Pantuso Elvira, Armentano Katia, Formoso Patrizia, Di Profio Gianluca, Poerio Teresa, Fontananova Enrica, Meringolo Carmen, Mashin Alexander I, Nicoletta Fiore P

Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci Cubo 15/C, 87036 Rende (CS), Italy.

Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Via P. Bucci Edificio Polifunzionale, 87036 Rende (CS), Italy.

Membranes (Basel). 2018 Jun 21;8(3):35. doi: 10.3390/membranes8030035.

The chemical binding of photocatalytic materials, such as TiO₂ and ZnO nanoparticles, onto porous polymer membranes requires a series of chemical reactions and long purification processes, which often result in small amounts of trapped nanoparticles with reduced photocatalytic activity. In this work, a chemical vapor deposition technique was investigated in order to allow the nucleation and growth of ZnO and TiO₂ nanoparticles onto polyvinylidene difluoride (PVDF) porous membranes for application in advanced oxidation processes. The thickness of obtained surface coatings by sputtered nanoparticles was found to depend on process conditions. The photocatalytic efficiency of sputtered membranes was tested against both a model drug and a model organic pollutant in a small continuous flow reactor.

光催化材料（如TiO₂和ZnO纳米颗粒）与多孔聚合物膜的化学结合需要一系列化学反应和漫长的纯化过程，这往往会导致少量捕获的纳米颗粒，其光催化活性降低。在这项工作中，研究了一种化学气相沉积技术，以使ZnO和TiO₂纳米颗粒在聚偏二氟乙烯（PVDF）多孔膜上成核和生长，用于高级氧化过程。发现溅射纳米颗粒获得的表面涂层厚度取决于工艺条件。在小型连续流动反应器中，针对模型药物和模型有机污染物测试了溅射膜的光催化效率。