title: Constructing all carbon nanotube hollow fiber membranes with improved performance in separation and antifouling for water treatment.
abstract: Manipulating carbon nanotubes (CNTs) through engineering into advanced membranes with superior performance for disinfection and decontamination of water shows great promise but is challenging. In this paper, a facile assembly of CNTs into novel hollow fiber membranes with tunable inner/outer diameters and structures is developed for the first time. These free-standing membranes composed entirely of CNTs feature a porosity of 86±5% and a permeation flux of about 460±50 L m(-2) h(-1) at a pressure differential of 0.04 MPa across the membrane. The randomly oriented interwoven structure of CNTs endows the membranes considerable resistance to pore blockage. Moreover, the adsorption capability of the CNT hollow fiber membranes, which is crucial in the efficient removal of small and trace contaminant molecules, is about 2 orders of magnitude higher than that of commercial polyvinylidene fluoride hollow fiber membranes. The unique advantage of the CNT hollow fiber membranes over other commercial membranes is that they can be in situ electrochemically regenerated after adsorption saturation.
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology , Dalian 116024, China.
authors.forename: Gaoliang
authors.initials: G
authors.lastname: Wei
authors.forename: Hongtao
authors.initials: H
authors.lastname: Yu
authors.forename: Xie
authors.initials: X
authors.lastname: Quan
authors.forename: Shuo
authors.initials: S
authors.lastname: Chen
authors.forename: Huimin
authors.initials: H
authors.lastname: Zhao
authors.forename: Xinfei
authors.initials: X
authors.lastname: Fan
mesh_terms: D000327:Adsorption; D057219:Biofouling / Q000517:prevention & control*; D055664:Electrochemical Techniques; D008567:Membranes, Artificial; D008863:Microspheres; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D010539:Permeability; D011137:Polystyrenes / Q000737:chemistry; D011145:Polyvinyls / Q000737:chemistry; D016062:Porosity; D012235:Rhodamines / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*; D005465:Fluorocarbon Polymers
chemical_list: D008567:Membranes, Artificial; D037742:Nanotubes, Carbon; D011137:Polystyrenes; D011145:Polyvinyls; D012235:Rhodamines; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers; C029773:rhodamine B