查找使用阿拉丁产品的科研文献

Stimuli-responsive wettability quartz sand filter material for efficient separation of oil/water mixture and controllable demulsification of oil/water emulsion

Jiangyun Zhao,Yinglong Che,Shide Man,Minggang Shan,Xiaosan Song,Jianlin Liu,Bigui Wei

Stimuli-responsive separation materials with reversible wettability transition have been attracting increasing attention because they have excellent oil/water separation performance. In this study, a facile and environmentally friendly approach was used to produce a quartz sand filter material with pH-controllable wettability between superhydrophobicity/superoleophilicity and superhydrophilicity/underwater superoleophobicity. PEI/ZnO-SA/CS-coated quartz sand filter material (PEI/ZnO-SA/CS@QS) was fabricated by introducing ZnO nanoparticles , hydrophobic alkyl long chain, and amino group-rich hydrophilic groups into the surface of quartz sand filter material. Rich amino groups on the surface of the PEI/ZnO-SA/CS@QS has high adsorption capacity and separation efficiency of industrial Congo red dye and methylene blue . Before and after wettability conversion, the pH-controllable PEI/ZnO-SA/CS@QS was applied to separate oil/water mixtures and separate various water-in-oil emulsions and oil-in-water emulsions. In addition, PEI/ZnO-SA/CS@QS is recyclable, and 10 cycles of oil/water mixture separation of specific experiments in this study were performed, remaining unchangeable separation efficiency (>98.89%). PEI/ZnO-SA/CS@QS provides a new research direction for on-demand oil/water separation and modification of hard filter media. The resulted PEI/ZnO-SA/CS@QS has promising application prospects in on-demand oil/water separation and demulsification .