Nano-structured metal oxides: synthesis, characterization and application for multifunctional cotton fabric

Nabil A Ibrahim, Ahmed A Nada, Basma M Eid, Marwa Al-Moghazy, Ahmed G Hassabo and Nabil Y Abou-Zeid

Abstract

Zinc oxide (ZnO) and titanium dioxide (TiO₂) nanoparticles (NPs) are prepared from their salts in form of aqueous suspensions to provide multifunctional cellulosic substrate. ZnO-NPs and TiO₂-NPs are obtained in the range of 3–5 nm and 8–15 nm, respectively. Prepared suspensions are loaded onto knitted cotton fabrics and fixed using reactive softener and/or citric acid. Antimicrobial activity, ultraviolet protection (UPF) and self-cleaning in respect to metal oxides add-on to the fabrics are investigated. Fabrics treated with ZnO-NPs for 10 g l⁻¹ (white fabrics) and 5 g l⁻¹ (dyed fabrics) were cidal for both gram negative and positive bacteria. Using 5 g l⁻¹ TiO₂-NPs in the presence of reactive softener has a bacteriostatic effect and showed a decent bacteria reduction. TiO₂-NPs showed the better UPF values than those of ZnO treated fabrics when it compared to the same fabric structure. Discoloration values of TiO₂-NPs treated fabrics showed superior color fading over the ZnO-NPs treated samples