Photo-induced water-oil separation based on switchable superhydrophobicity-superhydrophilicity and underwater superoleophobicity of the aligned ZnO nanorod array-coated mesh films
Photo-induced water-oil separation based on switchable superhydrophobicity-superhydrophilicity and underwater superoleophobicity of the aligned ZnO nanorod array-coated mesh films
复制标题
基于定向ZnO纳米棒阵列涂层网膜可切换超疏水性-超亲水性和水下超疏油性的光诱导水油分离
DOI：
10.1039/c2jm34056a
复制
发表时间：
2012-01-01
影响因子：
--
通讯作者：
Jiang, Lei
中科院分区：
文献类型：
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作者：
Tian, Dongliang;Zhang, Xiaofang;Jiang, Lei
刺激响应型表面润湿性，尤其是光响应型表面润湿性，已被广泛研究。与此同时，多功能表面，特别是用于处理石油污染水的多功能表面也引起了世界各国的关注。最近，也有报道了具有可控油水分离的pH响应表面。然而，光响应型水-油分离仍然是一个挑战。本文报道了基于定向氧化锌纳米棒阵列涂层网状膜的超疏水-超亲水和水下超疏油可切换的光诱导水-油分离，显示了在油-水-固三相体系中不同类型的水-油混合物的优良的可控性和高的分离效率。取向的氧化锌纳米棒阵列涂层不锈钢网膜的水下超疏油性能可以有效地防止网膜被油污污染。这项工作在光诱导的水-油混合物处理方面很有前景，例如从微反应系统中去除水分和可控过滤，也可能为基于可控表面润湿性的新型功能器件的设计提供有趣的见解。
Stimulus-responsive surface wettability, especially photoresponsive surface wettability, has been intensively studied. Meanwhile, multifunctional surfaces, especially for the treatment of oil contaminated water, have aroused worldwide attention. Recently, pH-responsive surfaces with controllable oil-water separation have also been reported. However, photoresponsive water-oil separation is still a challenge. Here we report photo-induced water-oil separation based on the switchable superhydrophobicity-superhydrophilicity and underwater superoleophobicity of aligned ZnO nanorod array-coated mesh films, which shows excellent controllability and high separation efficiency of different types of water-oil mixtures in an oil-water-solid three-phase system. The underwater superoleophobicity of the aligned ZnO nanorod array-coated stainless steel mesh film can effectively prevent the mesh film from being polluted by oils. This work is promising in photo-induced water-oil mixture treatments such as water-removal from a micro-reaction system and controllable filtration, and may also provide interesting insight into the design of novel functional devices based on controllable surface wettability.