Jing Wang , Li’an Hou , Kangkang Yan , Lin Zhang , Qiming Jimmy Yu
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引用次数: 130
Abstract
Superhydrophilic and underwater superoleophobic membranes are emerging materials for effective oil/water separation. In this paper, an electrospun nanofibrous (ENF) membrane with hierarchical structures was prepared by the construction of polydopamine nanoclusters onto a cross-linked polyacrylonitrile/hyperbranched polyethyleneimine (PAN/HPEI/PDA) ENF membrane. This hierarchical structure endows the membrane with superhydrophilicity with a low water contact angle of 0°, and underwater superoleophobicity with a high oil contact angle of 162°. This membrane can effectively separate oil/water emulsions with a high permeate flux (~ 1600 L m−2 h−1) and high oil rejection (~ 98.5%), solely driven by gravity. Furthermore, the membrane also showed an excellent antifouling ability for oil droplets and recyclability (>10 cycles), making it a promising candidate for treatment of oily wastewater.
期刊介绍：
The Journal of Membrane Science is a publication that focuses on membrane systems and is aimed at academic and industrial chemists, chemical engineers, materials scientists, and membranologists. It publishes original research and reviews on various aspects of membrane transport, membrane formation/structure, fouling, module/process design, and processes/applications. The journal primarily focuses on the structure, function, and performance of non-biological membranes but also includes papers that relate to biological membranes. The Journal of Membrane Science publishes Full Text Papers, State-of-the-Art Reviews, Letters to the Editor, and Perspectives.
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