Abstract
We report here the photo-catalytic properties of dye-sensitized TiO2-coated cotton fabrics. In this study, visible-light-driven, self-cleaning cotton fabrics were developed by coating the cotton fabrics with dye-sensitized TiO2. TiO2 nano-sol was prepared via the sol-gel method and the cotton fabric was coated with this nano-sol by the dip-pad–dry-cure method. In order to enhance the photo-catalytic properties of this TiO2-coated cotton fabric under visible light irradiation, the TiO2-coated cotton fabric was dyed with a phthalocyanine-based reactive dye, C.I. Reactive Blue 25 (RB-25), as a dye sensitizer for TiO2. The photo-catalytic self-cleaning efficiency of the resulting dye/TiO2-coated cotton fabrics was evaluated by degradation of Rhodamine B (RhB) and color co-ordinate measurements. Dye/TiO2-coated cotton fabrics show very good photo-catalytic properties under visible light.
Highlights
In the last century, the textile and clothing industries have gained revolutionary developments in many aspects
The Fourier transform infrared (FTIR)-attenuated total reflection (ATR) spectra of the pure cotton fabric, TiO2 -coated and dye/TiO2 -coated cotton fabrics are shown in the Figure 3
The decrease in the peak intensity at 3289 cm−1 and 1038 cm−1 in Figure 3b indicates the attachment of TiO2 with the (–OH) group of the cellulose chains on the surface of the cotton fabric
Summary
The textile and clothing industries have gained revolutionary developments in many aspects. Tremendous improvements in the physical and/or chemical treatment of textile surfaces and the development of new functional materials for the finishing of textile products have led to the new textile materials. These multifunctional products have a wide variety of applications in many fields, including health, safety and protection, medical and hygiene, clothing, construction, agriculture, transport, electronics, geo-textiles and packaging [1]. Finishing processes may be divided into two major steps i.e., (1) physical and/or chemical pretreatment of the surface of the cotton fabrics; (2) application of dyes or other functional materials to the cotton fabrics to get the final products. The development of self-cleaning textile fabrics using finishing processes is one of the promising research areas in textile technology
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