title: Synthesis of porous inorganic hollow fibers without harmful solvents.
abstract: A route for the fabrication of porous inorganic hollow fibers with high surface-area-to-volume ratio that avoids harmful solvents is presented. The approach is based on bio-ionic gelation of an aqueous mixture of inorganic particles and sodium alginate during wet spinning. In a subsequent thermal treatment, the bio-organic material is removed and the inorganic particles are sintered. The method is applicable to the fabrication of various inorganic fibers, including metals and ceramics. The route completely avoids the use of organic solvents, such as N-methyl-2-pyrrolidone, and additives associated with the currently used fiber fabrication methods. In addition, it inherently avoids the manifestation of so-called macro voids and allows the facile incorporation of additional metal oxides in the inorganic hollow fibers.
authors.affiliation: Inorganic Membranes, Department of Science and Technology, Mesa+Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede (The Netherlands).
authors.forename: Sushumna
authors.initials: S
authors.lastname: Shukla
authors.forename: Patrick
authors.initials: P
authors.lastname: de Wit
authors.forename: Mieke W J
authors.initials: MW
authors.lastname: Luiten-Olieman
authors.forename: Emiel J
authors.initials: EJ
authors.lastname: Kappert
authors.forename: Arian
authors.initials: A
authors.lastname: Nijmeijer
authors.forename: Nieck E
authors.initials: NE
authors.lastname: Benes
mesh_terms: D000464:Alginates / Q000737:chemistry; D000537:Aluminum Oxide / Q000737:chemistry; D060326:Chemistry Techniques, Synthetic; D020723:Glucuronic Acid / Q000737:chemistry; D055772:Green Chemistry Technology; D006603:Hexuronic Acids / Q000737:chemistry; D007287:Inorganic Chemicals / Q000138:chemical synthesis*; D016062:Porosity
chemical_list: D000464:Alginates; D006603:Hexuronic Acids; D007287:Inorganic Chemicals; D020723:Glucuronic Acid; D000537:Aluminum Oxide
keywords: carbohydrates; fibers; ionic crosslinking; membranes; solvent-free synthesis