Photochromic Textiles Based upon Aqueous Blends of Oxygen-Deficient WO3-x and TiO2 Nanocrystals

With the main objective being to develop photochromic smart textiles, in this paper, we studied the photochromic behavior of WO3-x nanocrystals (NCs) cooperatively interacting with variable amounts of TiO2 NCs. We tested several blends of WO3-x:TiO2 NCs, admixed in different compositions (relative m...

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Bibliographic Details
Published in:Textiles (Basel) 2022-09, Vol.2 (3), p.382-394
Main Authors: Giannuzzi, Roberto, Primiceri, Vitantonio, Scarfiello, Riccardo, Pugliese, Marco, Mariano, Fabrizio, Maggiore, Antonio, Prontera, Carmela Tania, Carallo, Sonia, De Vito, Cristian, Carbone, Luigi, Maiorano, Vincenzo
Format: Article
Language:English
Subjects:
inorganic nanoparticles
Investigations
Nanocomposites
Nanocrystals
Nanomaterials
Nanoparticles
photochromism
Polyvinyl alcohol
Screen printing
Sensors
smart textile
Solvents
Textiles
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Summary:With the main objective being to develop photochromic smart textiles, in this paper, we studied the photochromic behavior of WO3-x nanocrystals (NCs) cooperatively interacting with variable amounts of TiO2 NCs. We tested several blends of WO3-x:TiO2 NCs, admixed in different compositions (relative molar ratio of 4:0, 3:1, 2:2, 1:3, 0:4) and electrostatically interfacing because of opposite values of Z-potential, for photo-induced chromogenic textiles. We further monitored the photochromic sensitivity of NC-impregnated textiles after exposure to a few solvents (i.e., methanol, ethanol, and isopropanol) or when over-coated with different polymeric matrices such as natural cellulose or ionic conductive Nafion. The optimization of the compositions of the WO3-x:TiO2 blends embedded in polymeric matrices, allowed the nanostructured photochromic textiles to show rapid and tunable coloration (
ISSN:2673-7248
2673-7248
DOI:10.3390/textiles2030021