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Fabrication of $SiO_2$-$TiO_2$ Composite Inorganic Fibers with Electrospinning and Evaluation of Their Photocatalytic Activity  

Hyun, Dong-Ho (Center for Research and Development, Doobon Inc.)
Kim, Sang-Beom (Center for Research and Development, Doobon Inc.)
Lee, Seung-Goo (BK21 FTIT, Department of Organic Materials & Textile Sys. Engineering, Chungnam Nat'l University)
Chung, Won-Yang (Department of Chemistry, Kangwon National University)
Kim, Jin-Ho (Department of Chemistry, Kangwon National University)
Lee, Sung-Wook (Center for Research and Development, Doobon Inc.)
Publication Information
Textile Science and Engineering / v.46, no.5, 2009 , pp. 245-251 More about this Journal
Abstract
A series of $SiO_2$-$TiO_2$ composite sols have been prepared by the hydrolysis of tetraethyl orthosilicate (TEOS) and titanium (IV) isopropoxide dissolved in isopropanol which was controlled by HCl addition. The maximum amount of $TiO_2$ for suitable fiber formation was about 50 mol% in $SiO_2$-$TiO_2$ composite inorganic fibers. The SEM, TEM, and FT-IR results showed that the surface morphology and crystalline phase of the electro spun composite micro/nanoscale $SiO_2$-$TiO_2$ fibers were strongly affected by the content of $TiO_2$ and calcination temperature. The SEM and TEM images reveal that the fibers had diameters varying from hundreds of nanometer to 2 micrometer. The photocatalytic activity of composite inorganic fibers was evaluated by decomposition of methylene blue, acetaldehyde, and formaldehyde in waste water which are recognized as volatile organic compounds (VOCs).
Keywords
composite inorganic fiber; photocatalyst; volatile organic compounds; electrospinning;
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