title: Stretched homoporous composite membranes with elliptic nanopores for external-energy-free ultrafiltration.
abstract: Extremely permeable ultrafiltration membranes with elongated elliptical pores are fabricated by stretching composite membranes with homoporous selective layers and macroporous supports. With simultaneously increased porosities both for the selective layers and supports and the thinned selective layers, the stretched membranes exhibit multifold-enhanced permeability with little sacrifice in selectivities. Thus the produced membranes enable, for the first time, gravity-driven ultrafiltration and discrimination of similarly sized nanoparticles with diameters down to 30 nm.
authors.affiliation: State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Specialized Membranes, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China. yongwang@njtech.edu.cn.
authors.forename: Leiming
authors.initials: L
authors.lastname: Guo
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang