Abstract
Cashmere with UV-induced photocatalytic properties is developed for the first time by applying nanocrystalline anatase TiO2 colloid that is free of inorganic acids and organic solvents via a facile low-temperature one-step sol-gel process. The coated cashmere exhibits remarkable UV-induced photodegradation of methyl orange. Furthermore, the photocatalytic nano-coating on cashmere exhibits significant stability after repetitive washing cycles without the need for chemical or physical pretreatment, where the photocatalytic activities remain almost unchanged after three washing cycles while maintaining a water contact angle above 150°. The one-step functionalization process also minimizes the impact on the peculiar intrinsic properties of cashmere. These findings indicate that cashmere combining reproducible UV-induced photocatalytic activity with stable superhydrophobicity has potential in practical applications.
Highlights
Self-cleaning materials have received considerable attention due to their unique properties and practical applications in the field of energy and environment, such as solar panels, windows, fabrics, and paints [1,2,3]
In order to attain high signal-to-noise diffraction peaks, 10% TiO2 with four coatings were applied to cashmere fabric
Compared to pristine cashmere, coated fabric displayed the characteristic peaks of anatase
Summary
Self-cleaning materials have received considerable attention due to their unique properties and practical applications in the field of energy and environment, such as solar panels, windows, fabrics, and paints [1,2,3]. A superhydrophobic cotton textile with a WCA of 156◦ and superior photocatalytic activity under visible-light was developed through anatase TiO2 coating in conjunction with meso-tetra(4-carboxyphenyl) porphyrin, followed by modification with trimethoxy(octadecyl)silane [13]. It is a two-step process for a Materials 2017, 10, 1414; doi:10.3390/ma10121414 www.mdpi.com/journal/materials. It was found here that, without prior chemical or physical modification, the nano-coating cashmere fabric exhibits good bonding behavior, indicating stability after repetitive washings In this contribution, we developed photocatalytic self-cleaning cashmere by adopting a facile one-step process without additional treatment. The TiO2 -coated cashmere fabric exhibited UV-induced photocatalytic and superhydrophobic properties and showed remarkable wash stability
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