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Synthesis of Porous Inorganic Hollow Fibers without Harmful Solvents
Author(s) -
Shukla Sushumna,
de Wit Patrick,
LuitenOlieman Mieke W. J.,
Kappert Emiel J.,
Nijmeijer Arian,
Benes Nieck E.
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201402483
Subject(s) - fabrication , spinning , materials science , porosity , chemical engineering , aqueous solution , ionic bonding , fiber , metal , nanotechnology , composite material , chemistry , organic chemistry , metallurgy , ion , medicine , alternative medicine , pathology , engineering
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.