ABSTRACT

In this work, we reported a cuprous oxide/polypropylene (Cu₂O/PP) fibrous membrane with superhydrophobic (WCA = 151.8°±2.1°) and superlipophilic (OCA = 0°) for highly efficient oil/water separation through melt-electrospinning and magnetron sputtering, respectively. The surface morphology, microstructure, and wettability of the modified membrane were characterized by atomic force microscopy, scanning electron microscopy and contact angle goniometer, respectively. It was demonstrated that the Cu₂O/PP fibrous membranes showed superhydrophobic and superlipophilic, attributing to its higher roughness and lower surface energy after the deposition of Cu₂O nanoparticles. For separation of oil/water emulsion, the Cu₂O/PP fibrous membranes exhibited high separation efficiency (above 92% for various oil/water emulsion; 94.14% for n-hexane/water mixture), good stability and remarkable recyclability (92.52% for n-hexane/water mixture after 30 cycles), attributing to an outstanding adhesion of Cu₂O nanoparticles to fibrous membrane. This work could provide a simple and efficient method to fabricate highly efficient fibrous membranes in industrial oil-contaminated water treatment and marine spilt-oil cleanup.

摘要

在这项工作中，我们报道了具有超疏水性（WCA = 151.8°±2.1°）和超亲脂性（OCA = 0°）的氧化亚铜/聚丙烯（Cu ₂ O / PP）纤维膜，可通过熔融静电纺丝高效分离油/水和磁控溅射。分别用原子力显微镜，扫描电子显微镜和接触角测角仪对改性膜的表面形貌，微观结构和润湿性进行了表征。已经证实，在Cu ₂ O / PP纤维膜表现超疏水性和超级脂溶性，归因于它的高粗糙度和较低的表面能Cu的沉积后₂ ö纳米颗粒。为了分离油/水乳化液，Cu ₂O / PP纤维膜显示出高分离效率（各种油/水乳状液的分离效率高于92％；正己烷/水混合物的分离效率为94.14％），良好的稳定性和出色的可回收性（30个循环后的正己烷/水混合物的分离度为92.52％） ，这归因于Cu ₂ O纳米粒子与纤维膜的出色附着力。这项工作可以提供一种简单而有效的方法，以在工业油污染的水处理和海洋溢油清理中制造高效的纤维膜。