Journal of Textile Research ›› 2018, Vol. 39 ›› Issue (12): 89-94.doi: 10.13475/j.fzxb.20171204106

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Preparation and performance of self-cleaning fabrics based on Ag/TiO2 photocatalysis

  

  • Received:2017-12-20 Revised:2018-08-06 Online:2018-12-15 Published:2018-12-17

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Abstract:

In order to prepare self-cleaning fabrics based on photocatalytic mechanism, Ag/ TiO2 visible light response photocatalyst were prepared by using pyrrole (Py) as monomer and silver nitrate as a silver source, performing chemical oxidation polymerization on the surface of commercial TiO2 to form a silverdoped PPy-Ag/ TiO2, and high temperature calcining to remove PPy. The Ag/ TiO2 visible light response photocatalyst was coated on PAN fiber by co-dispersion and dip-coating, and fabrics were prepared by twisting and plying. The structure and properties of the fabrics were studied by scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetry and ultraviolet-visible
spectroscopy. The results show that Ag/ TiO2 particles are successfully deposited on the surface of PAN fiber with the load quantity about 3. 17%. More importantly, Ag/ TiO2 coated PAN fabrics have good visible-light catalytic degradation to methylene blue, Rhodamine B and red wine under visible light, respectively. Ag/ TiO2 coated PAN fabric show a significant self-cleaning effect. After washing for multiple times, the Ag/ TiO2 coated PAN fabrics still maintain good self-cleaning effect, showing good washing fastness and durability.

Key words: self-cleaning fabric, silver doped titanium dioxide, polyacrylonitrile, photocatalysis, visible light

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