材料科学
石墨烯
氧化物
化学工程
涂层
聚合
纳米技术
共价键
复合材料
聚合物
有机化学
化学
工程类
冶金
作者
Yingying Yin,Hui Li,Lei Zhu,Tianchao Guo,Xiao Li,Xing Wang,Qingzhong Xue
标识
DOI:10.1016/j.apsusc.2019.01.118
摘要
An environmental-friendly stainless steel mesh (SSM) decorated with polydopamine (PDA) and graphene oxide (GO) for oil/water mixture separation was successfully fabricated via a facile dipping coating method. PDA particles were firstly modified on the mesh surface by the self-polymerization of dopamine. Then, GO was firmly anchored onto the surface of PDA particles through the covalent bonds or electrostatic interaction between GO and PDA. Finally, a SSM/PDA/GO multilevel structure was prepared, which shows superior hydrophilicity and excellent anti-fouling properties due to the hydrophilic functional groups and a thicker water layer confined inside SSM/PDA/GO multilevel structure. Therefore, the as-prepared SSM/PDA/GO mesh with a large oil intrusion pressure (>3 kPa) can separate oil/water mixture with ultra-high flux (∼15,000 L m−2 h−1), preferable separation efficiency (>99.95%) and outstanding recyclability. Furthermore, the SSM/PDA/GO possesses superior stability under harsh environmental conditions, which indicates that the mesh is a promising candidate for practical oil spill cleanup in harsh conditions, especially in high salty marine environment.
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