Jiang Yu-Hui, Zhang Yu-Qing, Wang Zhan-Hua, An Qing-Da, Xiao Zuo-Yi, Xiao Ling-Ping, Zhai Shang-Ru
Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
Science and Technology Bureau, Zhongke (Linyi) Innovation Park, Shandong, Linyi 270034, China.
J Colloid Interface Sci. 2022 Dec 15;628(Pt A):356-365. doi: 10.1016/j.jcis.2022.07.143. Epub 2022 Jul 27.
Designing interfacial coating with tailored characteristics is a crucial step in regulating the wetting properties of oil/water separation materials; however, the controllable fabrication of multifunctional layer with long-term durability in harsh environments remains challenging. Fabrication of raised dots based on magnetic FeO particles on micro-nanometer units, inspired by mussel chemistry, under the adhesion behavior of dopamine (DA) self-polymerization covalent deposition of FeO particles and hydrophobic polydimethylsiloxane (PDMS) modification to synthesize magnetic superhydrophobic cotton composites (Cotton-P). Due to the unique magnetic and superhydrophobic surface composition, the synthetic Cotton-P possesses superhydrophobic (155.4°) and magnetic properties and still exhibits these excellent properties after 10 cycles. In addition, the hydrophobicity of magnetic monolithic cotton is virtually unaffected in harsh environments. The chemical/thermal stability of the Cotton-P composite is improved due to the rigid silane coating on the skeleton. Moreover, the Cotton-P revealed excellent oil/water separation efficiency of over 98 % after 10 cycles. Based on these outstanding properties, Cotton-P has the potential to develop in the treatment of oil-water mixtures.
设计具有特定特性的界面涂层是调节油水分离材料润湿性的关键步骤；然而，在恶劣环境中可控制备具有长期耐久性的多功能层仍然具有挑战性。受贻贝化学启发，基于微纳米单元上的磁性FeO颗粒制备凸起圆点，在多巴胺（DA）自聚合共价沉积FeO颗粒以及疏水性聚二甲基硅氧烷（PDMS）改性的粘附行为下，合成磁性超疏水棉复合材料（Cotton-P）。由于独特的磁性和超疏水表面组成，合成的Cotton-P具有超疏水性（155.4°）和磁性，并且在10次循环后仍表现出这些优异性能。此外，磁性整体棉的疏水性在恶劣环境中几乎不受影响。由于骨架上的刚性硅烷涂层，Cotton-P复合材料的化学/热稳定性得到提高。此外，Cotton-P在10次循环后显示出超过98%的优异油水分离效率。基于这些优异性能，Cotton-P在油水混合物处理方面具有发展潜力。
