In recent years, the fabrication of efficient, green, and anti-pollution membrane materials has attracted extensive attention in the field of oil/water separation. Herein, a facile co-deposition strategy based on the reaction between tea polyphenols (TP) and γ-aminopropyltriethoxysilane (APTES) was proposed. Hierarchical nanoparticles were successfully constructed on the surface of polypropylene (PP) melt-blown nonwoven via a mild process, which endowed it with superhydrophilicity and underwater superoleophobicity. The as-prepared membranes could realize the efficient separation of oil/water mixtures, whether for vegetable oil/water mixtures or mineral oil/water mixtures. All separation efficiencies were above 99.1% and the optimal permeation flux was as high as 113,000 L m⁻² h⁻¹. The recyclability and recoverability of the coated membranes were further evaluated by conducting “30 + clean + 30” cyclic experiments. Additionally, the modified membranes also exhibited superior underwater oil resistance, low oil adhesion, and self-cleaning capacity. Good corrosion resistance allowed them to be used in acidic and mildly alkaline environments, and the treated membranes could keep stable underwater superoleophobicity though placed in ultrasonic water for 60 min. Therefore, the modified PP membranes with high efficiency, energy saving, environmental protection, and anti-pollution could be applied in the treatment of oily wastewater.

近年来，高效、绿色、抗污染的膜材料的制备在油水分离领域引起了广泛关注。在此，提出了一种基于茶多酚（TP）和γ-氨基丙基三乙氧基硅烷（APTES）反应的简便共沉积策略。通过温和的工艺，在聚丙烯（PP）熔喷非织造布表面成功构建了分层纳米粒子，使其具有超亲水性和水下超疏油性。所制备的膜可以实现油/水混合物的有效分离，无论是植物油/水混合物还是矿物油/水混合物。所有分离效率均高于99.1%，最佳渗透通量高达113,000 L m ^-2  h ^-1. 通过进行“30+清洁+30”循环实验进一步评估了涂层膜的可回收性和可回收性。此外，改性膜还表现出优异的水下耐油性、低油粘附性和自清洁能力。良好的耐腐蚀性使其可以在酸性和弱碱性环境中使用，处理后的膜在超声波水中放置60分钟仍能保持稳定的水下超疏油性。因此，高效、节能、环保、抗污染的改性PP膜可应用于含油废水的处理。