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首页> 外文期刊>Frontiers of materials science >Twofold bioinspiration of TiO_2-PDA hybrid fabrics with desirable robustness and remarkable polar/nonpolar liquid separation performance
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Twofold bioinspiration of TiO_2-PDA hybrid fabrics with desirable robustness and remarkable polar/nonpolar liquid separation performance

机译：TiO_2-PDA杂交织物的双重生物粉状具有理想的鲁棒性和显着的极性/非极性液体分离性能

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摘要

The fundamental relationship between microstructure, constituent, processing and performances of separating materials is really a vital issue. Traditional preparation methods for separation membranes are complex, time-consuming and easy to be fouled. Also, the durability of conventional coatings on membrane is poor. By combination of bioinspiration from mussel adhesive and fish scales' underwater superoleophobicity, we propose a general route to prepare organic-inorganic hybrid coatings, while no complex apparatus is needed. Specifically, based on the biomimetic adhesion of polydopamine (PDA), we used it as a binder to adhere TiO2 nanoparticles and built rough microstructure on fabric. In this way, we obtained TiO2-PDA treated fabric with special wettability. These TiO2-PDA treated samples owned superamphiphilicity in air, underwater superoleophobicity (underwater oil contact angles (OCAs) 150 degrees), underoil superhydrophobicity (underoil water contact angles (WCAs) 150 degrees), excellent multiresistance; and can separate polar/nonpolar liquid mixture effectively. It also owned superaerophobicity underwater (underwater bubble contact angles (BCAs) 150 degrees). The proposed TiO2-PDA coatings are highly expected to be employed for real situation of water pollution remediation, self-cleaning, oil extraction and harsh chemical engineering issues.
机译：分离材料的微观结构，组成，加工和性能之间的基本关系真的是一个重要的问题。用于分离膜的传统制备方法是复杂的，耗时且易于污染的方法。而且，常规涂层对膜上的耐久性差。通过从贻贝粘合剂和鱼鳞的水下超细性组合，我们提出了一般的途径来制备有机 - 无机杂交涂层，而不需要复杂的装置。具体地，基于聚二胺（PDA）的仿生粘附，我们将其用作粘合剂以粘附TiO2纳米颗粒并在织物上构建粗糙的微观结构。通过这种方式，我们获得了具有特殊润湿性的TiO2-PDA处理的织物。这些TiO2-PDA治疗的样品在空气中拥有的超人参，水下超级电泳（水下油接触角（OCAS）> 150度），受压超水性（受管水接触角（WCA）> 150度），优异的多渠率;并且可以有效地分离极/非极性液体混合物。它还拥有水下超流性（水下气泡接触角（BCA）> 150度）。拟议的TiO2-PDA涂料预计将用于水污染修复，自清洗，石油提取和苛刻化学工程问题的实际情况。

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