贻贝仿生矿化超亲水表面膜的制备及其油-水分离性能
Preparation of mussel-inspired biomineralization superhydrophilic surface membrane for oil-water separation
李思诺 1刘静 1孙凯 2李胜海3
作者信息
- 1. 辽宁工程技术大学机械工程学院,阜新 123000
- 2. 辽宁工程技术大学机械工程学院,阜新 123000;辽宁工程技术大学创新实践学院,阜新 123000
- 3. 中国科学院生态环境高分子材料重点实验室,中国科学院长春应用化学研究所,长春 130022
- 折叠
摘要
频繁的海洋原油泄漏、无序且随意的工业含油污水排放催生出高效油-水分离材料迫切需求.融合膜分离技术和表面工程策略构建的超亲水膜实现了高效的油-水分离而引发广泛关注.本文利用贻贝仿生矿化的策略,结合贻贝启发快速沉积和层层自组装矿化两步法,在各种膜表面成功制备了界面稳定且具有优异抗污染性能的超亲水/水下超疏油涂层.由于其突出的超亲水和水下驱油能力,涂层膜能够高效分离油-水混合物以及表面活性剂稳定的水包油乳液.此外,由于优异的界面稳定性,超亲水表面膜实现了长效的油-水乳液分离.这些优异的性能加上其简便的制造工艺,使其成为油-水分离的理想材料.
Abstract
Frequent marine crude oil spills and disorderly discharge of industrial oily wastewater have given rise to an urgent demand for efficient oil-water separation materials.Superhydrophilic membranes constructed by integrating membrane separation technology and surface engineering strategies have attracted great attention for achieving efficient oil-water separation.Herein,a mussel inspired mineralization strategy combined with mussel-inspired rapid deposition and layer-by-layer self-assembled mineralization is used to successfully prepare interface-stable superhydrophilic/underwater superoleophobic coatings with excellent self-cleaning properties on various membrane surfaces.Thanks to its outstanding superhydrophilicity and underwater oil repellency,the coated membrane is capable of efficiently separating oil-water mixtures as well as surfactant-stabilized oil-in-water emulsions.In addition,due to the excellent interfacial stability,the superhydrophilic membrane achieves long-term oil-in-water emulsion separation,with the separation efficiency of the coated membrane remaining above 99.2％during 30 times of emulsion separation.These superior properties combined with its facile fabrication process make it an ideal material for oil-water separation.
关键词
仿生矿化/自清洁/超亲水/油-水分离Key words
bioinspired mineralization/self-cleaning/superhydrophilic/oil-water separation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据