Oil/water separation and heavy metal ion adsorptions have become a worldwide challenge due to the global industrial development and its indiscriminate discharge. Large numbers of methods have been developed to solve the problems, among which using superwettability material to selective separation is one of an efficient approach. However, this method cannot adsorb the heavy metal ions from water. Herein, we developed superwettability meshes that can not only separate oil/water after modification but also adsorb heavy metal ions before modification, which is just sandwiching an adsorbent layer between the meshes. The results showed that this method can separate most of oil/water mixtures with high efficiency (higher than 95%) as well as favorable recyclability. Besides, it can separate oil/water emulsion easily. In addition, the carbon layer between the meshes can adsorb heavy metal ions such as Ni(II), Cr(VI) (in the form of Cr₂O₇²⁻), and Cd(II) with high adsorption efficiency. More importantly, the carbon layer can be replaced by any other powers such as metal–organic frameworks (MOFs) and magnetic particle to extend the applications. We believe that such a novel and simple approach can provide some new perspectives to settle the environmental problems.

中文翻译：

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具有超润湿性的夹层筛网，可用于油/水分离和重金属离子吸收

油/水分离和重金属离子吸附已成为全球性的挑战，这是由于全球工业发展及其不加选择的排放所致。已经开发出许多方法来解决这些问题，其中使用超润湿性材料进行选择性分离是一种有效的方法。但是，该方法不能从水中吸附重金属离子。本文中，我们开发了超润湿性筛网，该筛网不仅可以在改性后分离油/水，而且可以在改性前吸附重金属离子，这只是将吸附剂层夹在筛网之间。结果表明，该方法可以分离大多数油/水混合物，效率高（高于95％），并且具有良好的可回收性。此外，它可以轻松分离油/水乳液。此外，₂ O ₇ ^2-）和Cd（II）具有高吸附效率。更重要的是，碳层可以被任何其他动力所取代，例如金属有机框架（MOF）和磁性颗粒，以扩展应用范围。我们认为，这种新颖，简单的方法可以为解决环境问题提供一些新的见解。