Construction of superhydrophilic hierarchical polyacrylonitrile nanofiber membranes by <i>in situ</i> asymmetry engineering for unprecedently ultrafast oil–water emulsion separation
Xiquan Cheng, Zekun Sun, Xiaobin Yang, Zhixing Li, Yingjie Zhang, Peng Wang, Heng Liang, Jun Ma, Lu Shao
Abstract
With multi-hydrophilic functional networks, asymmetric PAN nanofiber membranes with finely tailored pore structures and hydrophilicity are constructed and show high permeance 22 000 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>, separation efficiency 99.2% and flux recovery rate 98%.
Topics & Concepts
PolyacrylonitrilePermeanceMembraneNanofiberEmulsionSuperhydrophilicityMaterials scienceChemical engineeringNanotechnologyChemistryComposite materialWettingPolymerEngineeringPermeationBiochemistrySurface Modification and SuperhydrophobicityAdvanced Sensor and Energy Harvesting MaterialsMembrane Separation Technologies