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Visible-Light-Driven, Dye-Sensitized TiO2 Photo-Catalyst for Self-Cleaning Cotton Fabrics

Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Author to whom correspondence should be addressed.
Academic Editor: Silvia Gross
Coatings 2017, 7(11), 192;
Received: 28 July 2017 / Revised: 30 October 2017 / Accepted: 3 November 2017 / Published: 6 November 2017
(This article belongs to the Special Issue Advances in Functional Inorganic Coatings)
PDF [4865 KB, uploaded 6 November 2017]


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. View Full-Text
Keywords: self-cleaning; TiO2; visible light active photo-catalyst; dye sensitization; sol-gel method self-cleaning; TiO2; visible light active photo-catalyst; dye sensitization; sol-gel method

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Ahmad, I.; Kan, C.-W. Visible-Light-Driven, Dye-Sensitized TiO2 Photo-Catalyst for Self-Cleaning Cotton Fabrics. Coatings 2017, 7, 192.

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