In this study, electrospun polyvinylidene fluoride (PVDF)-based nanofibrous membranes embedding TiO₂ were prepared and used for photocatalytic degradation and oil/water separation. The nanofibrous membranes were characterized by scanning electron microscopy (SEM), transmission electronic microscope (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) spectroscopy, thermal performance analysis, and oil/water separation analysis. And the degradation of rhodamine B dye was also investigated. Results showed that the fiber diameter and thermal stability of the membranes decreased with the increasing of TiO₂. Meanwhile, the fiber surface roughness and specific surface area increased. The analysis of TEM, XRD and FTIR indicated that TiO₂ existed in the PVDF membranes. When the TiO₂ content was 12 %, the fiber diameter of the membranes was about 110 nm, and the photocatalytic degradation of rhodamine B dye efficiency was up to 97 %. The reaction rate constant was 0.02057 min⁻¹. At 0.01 MPa vacuum, oil separated from water effectively, which proves that separation can be easily conducted with a low energy cost. Thus, the prepared membranes have a very high application prospect in the purification of reclaimed water and separation of oil and water.

在这项研究中，制备了嵌入TiO _2的静电纺聚偏二氟乙烯（PVDF）基纳米纤维膜，并将其用于光催化降解和油/水分离。通过扫描电子显微镜（SEM），透射电子显微镜（TEM），X射线衍射（XRD），傅里叶变换红外光谱（FTIR）光谱，热性能分析和油/水分离分析来表征纳米纤维膜。并对罗丹明B染料的降解进行了研究。结果表明，随着TiO ₂含量的增加，膜的纤维直径和热稳定性降低。同时，纤维表面粗糙度和比表面积增加。TEM，XRD和FTIR分析表明TiO ₂存在于PVDF膜中。当TiO ₂含量为12％时，膜的纤维直径为约110nm，若丹明B染料的光催化降解效率高达97％。反应速率常数为0.02057min ^-1。在真空度为0.01 MPa时，油可以有效地从水中分离出来，这证明分离操作容易且能耗低。因此，制备的膜在再生水的提纯和油水分离中具有很高的应用前景。