In the present work, we developed a simple, eco-friendly, and cost-effective approach to fabricate a recyclable hydrophobic/superoleophilic fabric filter using bismuth nanostructures and purified terephthalic acid (PTA)-based resin. First, different morphologies of bismuth nanostructures such as dendritic, hierarchical, flower and cactus-like were prepared by a facile one-step galvanic displacement method. Afterwards, the coating composition of Bi/PTA mixtures was applied on the surface of fabric filters by a simple hand brushing route. The results indicated that the water and oil contact angles of the modified hydrophobic-superoleophilic fabric filter were about 135° and 0°, respectively. The various oil/water mixtures can be successfully separated by a facile gravity-driven filtration using the as-coated hydrophobic filter with the separation efficiency above 93% and repeatability for at least 10 times. Also, the improved hydrophobic filter showed excellent self-cleaning performance for the removal of surface contaminants. The advantages of scalable production, high efficiency, cost-effective, time saving, sustainable and excellent reusability for the prepared hydrophobic-superoleophilic filter make it to be a potential candidate for oil/water separation and self-cleaning applications.

在目前的工作中，我们开发了一种简单，环保且具有成本效益的方法，以使用铋纳米结构和纯对苯二甲酸（PTA）树脂来制造可回收的疏水性/超亲油性织物过滤器。首先，通过简便的一步电位移法制备了铋纳米结构的不同形态，如树枝状，层状，花状和仙人掌状。然后，通过简单的手工刷涂方法将Bi / PTA混合物的涂料组合物涂在织物过滤器的表面上。结果表明，改性的疏水-超亲油性织物过滤器的水和油接触角分别为约135°和0°。各种油/水混合物可以使用涂覆的疏水性过滤器通过重力驱动轻松过滤而成功分离，分离效率超过93％，重复性至少10倍。而且，改进的疏水性过滤器表现出优异的自清洁性能，可去除表面污染物。所制备的疏水性-超亲油性过滤器具有规模化生产，高效，成本效益，节省时间，可持续和出色的可重复使用性的优点，使其成为油/水分离和自清洁应用的潜在候选者。