Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

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

전기방사법에 의한 $SiO_2$-$TiO_2$계 복합무기섬유의 제조 및 광촉매 활성 평가

  • 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.)
  • Published : 2009.10.31
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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

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