title: Synthesis of ordered mesoporous silica membrane on inorganic hollow fiber.
abstract: This paper reports on a new method for the preparation of mesoporous silica membranes on alumina hollow fibers. A surfactant-silica sol is filled in the lumen of an alpha-alumina hollow fiber. The filtration technique combined with an evaporation-induced self-assembly (EISA) process results in the formation of a continuous ordered mesoporous silica layer on the outer side of alpha-alumina hollow fibers. X-ray diffraction (XRD), transmission electron microscopy (TEM), and nitrogen isothermal adsorption measurements reveal that these membranes possess hexagonal (P6mm) mesostructures with pore diameters of 4.48 nm and BET surfaces of 492.3 m(2) g(-1). Scanning electron microscopy (SEM) studies show that the layers are defect free and energy-dispersive spectroscopy (EDS) mapping images further confirm the formation of continuous mesoporous silica layer on the outer side of alpha-alumina hollow fibers. Nitrogen and hydrogen permeance tests show that the membranes are defect free.
authors.affiliation: Department of Environmental Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China.
authors.forename: Jiansheng
authors.initials: J
authors.lastname: Li
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yanxia
authors.initials: Y
authors.lastname: Hao
authors.forename: Jiangyan
authors.initials: J
authors.lastname: Zhao
authors.forename: Xiuyun
authors.initials: X
authors.lastname: Sun
authors.forename: Lianjun
authors.initials: L
authors.lastname: Wang