Huang Yi, Jiao Yang, Chen Ting, Gong Yutao, Wang Songcheng, Liu Yang, Sholl David S, Walton Krista S
School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, Georgia 30332, United States.
School of Engineering, Institute for Materials & Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh EH9 3FB, United Kingdom.
ACS Appl Mater Interfaces. 2020 Jul 29;12(30):34413-34422. doi: 10.1021/acsami.0c08803. Epub 2020 Jul 14.
Zirconium-based metal-organic frameworks (MOFs) have attracted interest due to their chemical and thermal stabilities and structural tunability. In this work, we demonstrate the tuning of the wettability of a UiO-66 structure via defect-engineering for efficient oil/water separation. UiO-66 crystals with controlled levels of missing-linker defects were synthesized using a modulation approach. As a result, the hydrophilicity of the defect-engineered UiO-66 (d-UiO-66) can be varied. In addition, a thin layer of hydrophilic d-UiO-66 was successfully fabricated on a series of stainless steel meshes (d-UiO-66@mesh), which exhibited excellent superhydrophilic and underwater superoleophobic properties and displayed interesting separation performance for various oil/water mixtures.
基于锆的金属有机框架材料（MOFs）因其化学和热稳定性以及结构可调控性而备受关注。在这项工作中，我们展示了通过缺陷工程对UiO-66结构的润湿性进行调控，以实现高效的油/水分离。采用一种调制方法合成了具有可控连接体缺失缺陷水平的UiO-66晶体。结果表明，经过缺陷工程处理的UiO-66（d-UiO-66）的亲水性可以改变。此外，在一系列不锈钢网（d-UiO-66@网）上成功制备了一层亲水性的d-UiO-66薄层，该薄层表现出优异的超亲水性和水下超疏油性，并对各种油/水混合物展现出有趣的分离性能。
