Durable Superhydrophobic Coating with Adjustable Superwettability for Oil–Water Separation

IF 5.5 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2025-09-23 DOI:10.1021/acsanm.5c03198

Wenting Kong*, , , Hao Jia, , , Yan Zhao, , and , Wen Xu,

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Abstract

Smart membranes with adjustable superwettability are promising candidates for addressing complex challenges, such as treating oily domestic wastewater and industrial oil leakages. In this study, a durable superhydrophobic coating with switchable wettability was fabricated on a cotton fabric. The coated fabric exhibited a rapid transition to a superhydrophilic/underwater superoleophobic state via a “wetting-displacing” process, and can recover its original superhydrophobicity upon drying. The underwater–oil contact angle was further modulated by adjusting the ratio of the chemical components to the coating thickness. Inspired by the wettability pattern of the Stenocara beetle, an underwater superoleophobic/philic patterned fabric for efficient oi–water separation was developed. The influence of the wettability pattern geometry on the separation efficiency and flux was also investigated. The coated fabric was used to separate multiple types of oil/water mixtures with a separation efficiency of over 99%.

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耐久的超疏水涂层，具有可调的超润湿性，用于油水分离

具有可调节超润湿性的智能膜是解决复杂挑战的有希望的候选者，例如处理含油的生活废水和工业漏油。在本研究中，在棉织物上制备了具有可切换润湿性的耐久超疏水涂层。涂层织物通过“润湿-置换”过程迅速转变为超亲水/水下超疏油状态，干燥后可恢复其原有的超疏水性。通过调整化学成分与涂层厚度的比例，进一步调节了水下油接触角。受Stenocara甲虫的润湿性图案的启发，开发了一种用于高效油水分离的水下超疏油/亲水性图案织物。研究了润湿性模式几何形状对分离效率和通量的影响。该涂层织物可用于多种油水混合物的分离，分离效率达99%以上。

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.