Li Hui, Yin Yingying, Zhu Lei, Xiong Ya, Li Xiao, Guo Tianchao, Xing Wei, Xue Qingzhong
State Key Laboratory of Petroleum Pollution Control, China University of Petroleum, Qingdao 266555, Shandong, PR China; School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, PR China; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, Shandong, PR China.
School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, Shandong, PR China.
J Hazard Mater. 2019 Jul 5;373:725-732. doi: 10.1016/j.jhazmat.2019.04.009. Epub 2019 Apr 2.
A hierarchical structured steel mesh decorated with metal organic framework (UiO-66-NH) nanoparticles/graphene oxide (GO) nanosheets was successfully prepared via a simple self-assemble method. Because water molecules tend to build hydrogen bonds with the amine, carboxyl and hydroxyl functional groups of UiO-66-NH/GO hierarchical structure, the hierarchical structure can easily capture water and tightly lock the water to build a stable water layer on the steel mesh surface and block oil in contact with the steel mesh. Therefore, the obtained hierarchical structured steel mesh exhibits super-hydrophilicity, underwater super-oleophobicity, excellent oil resistance and outstanding oil/water separation performance with a superior high permeating flux (54,500 L m h) and rejection (>99.9%) under gravity force, indicating the mesh possesses great potential for treating oily wastewater.
通过一种简单的自组装方法成功制备了一种用金属有机框架（UiO-66-NH）纳米颗粒/氧化石墨烯（GO）纳米片装饰的分层结构钢网。由于水分子倾向于与UiO-66-NH/GO分层结构的胺基、羧基和羟基官能团形成氢键，该分层结构能够轻松捕获水分并紧密锁住水分，从而在钢网表面形成稳定的水层，阻止油与钢网接触。因此，所制备的分层结构钢网表现出超亲水性、水下超疏油性、优异的耐油性和出色的油水分离性能，在重力作用下具有卓越的高渗透通量（54,500 L m h）和截留率（>99.9%），表明该钢网在处理含油废水方面具有巨大潜力。
