Polydopamine nanocluster decorated electrospun nanofibrous membrane for separation of oil/water emulsions

IF 8.4 1区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Membrane Science Pub Date : 2018-02-01 DOI:10.1016/j.memsci.2017.10.028

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.

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聚多巴胺纳米簇修饰电纺纳米纤维膜用于油水乳液分离

超亲水膜和水下超疏油膜是新兴的油水有效分离材料。本文通过在交联聚丙烯腈/超支化聚乙烯亚胺(PAN/HPEI/PDA) ENF膜上构建聚多巴胺纳米团簇，制备了具有层次结构的电纺丝纳米纤维膜。这种分层结构使膜具有低水接触角为0°的超亲水性和高油接触角为162°的水下超疏油性。该膜在重力驱动下具有较高的渗透通量(~ 1600 L m−2 h−1)和较高的排油率(~ 98.5%)，能有效分离油水乳液。此外，该膜还表现出优异的油滴防污能力和可回收性(循环10次)，使其成为处理含油废水的有希望的候选者。

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来源期刊

Journal of Membrane Science 工程技术-高分子科学

CiteScore

17.10

自引率

17.90%

发文量

1031

审稿时长

2.5 months

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.