In the present study, Ag@TiO₂ nanoparticles (NPs) were successfully synthesized by a hydrothermal method. Then the fabric (treated by dielectric barrier discharge (DBD) plasma and alkali desizing) was sprayed by solutions of polyurethane (PU) adhesive and as-prepared Ag@TiO₂NPs in sequence for constructing a robust multi-level structure. Afterwards, the durable superhydrophilic and underwater superoleophobic coatings were obtained on the fabric surface. With further octadecyl trichlorosilane (OTS) modification, the wetting behaviour of the coating was transferred to superhydrophobicity and superoleophilicity. Observations showed that both cotton fabrics exhibited excellent superwetting properties and antimicrobial activities even after experiencing repeated rinsing by water or oil, abrasion with the original cotton fabric or sand paper, and in chemical stability tests in a base and acid, etc. Moreover, the two types of Ag@TiO₂NPs/PU composite fabrics could successfully serve as filtering membranes for the fine reclamation of water or oil from their emulsion mixtures, which demonstrated high selectivity and efficiency, offering the theoretical foundation to extend the range of practical applications for textiles.

中文翻译：

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Ag@TiO2NPs/PU复合织物具有特殊润湿性，用于分离各种水油乳液

本研究通过水热法成功合成了Ag@TiO _{2纳米粒子(NPs)。}然后，织物（经过介质阻挡放电（DBD）等离子体和碱退浆处理）依次喷涂聚氨酯（PU）粘合剂溶液和制备的Ag@TiO 2 _NPs，以构建坚固的多层结构。随后，在织物表面获得了耐用的超亲水和水下超疏油涂层。通过十八烷基三氯硅烷（OTS）的进一步改性，涂层的润湿行为转变为超疏水性和超亲油性。观察表明，两种棉织物即使在经历水或油的反复漂洗、原棉织物或砂纸的磨损、以及在碱和酸中的化学稳定性测试等后，仍表现出优异的超润湿性能和抗菌活性。类型的Ag@TiO ₂ NPs/PU复合织物可以成功地用作过滤膜，用于从乳液混合物中精细回收水或油，表现出高选择性和效率，为扩大纺织品的实际应用范围提供了理论基础。