Preparation of inorganic silica nanofibers containing silver nanoparticles |
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Authors: | Kyung Dan Min Ji Ho Youk Young-Je Kwark Won Ho Park |
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Institution: | (1) Department of Organic Materials and Textile System Engineering, Chungnam National University, 305-764 Daejeon, Korea;(2) Department of Advanced Fiber Engineering, Intelligent Textile System Research Center, Inha University, 402-751 Incheon, Korea;(3) Department of Organic Materials and Fiber Engineering, Soongsil University, 158-743 Seoul, Korea |
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Abstract: | Silica nanofibers containing silver nanoparticles were successfully prepared using sol-gel chemistry and electro-spinning
technique. Solution of tetraethly orthosilicate in ethanol containing silver nitrate was aged to have sufficient viscosity
and electrospun to form nanofibers. Upon thermal treatment, the gelation reaction between silanols was completed in the prepared
silica nanofibers, and at the same time, silver ions in the nanofiber changed to metallic silver or silver oxides. The reduction
of silver ions could be also achieved by UV irradiation, and the generated silver nanoparticles were present preferentially
on the surface of the silica nanofibers. On testing release behavior of silver ions, it was found that most of silver remained
in the silica nanofiber. The silica nanofibers containing silver nanoparticles exhibited excellent antibacterial and deodorant
properties. |
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Keywords: | Silica nanofiber Silver nanoparticle Sol-gel chemistry Electrospinning Antibacterial activity |
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