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Visible and UV functionality of TiO2 ternary nanocomposites on cotton
journal contribution
posted on 2014-12-01, 00:00 authored by Esfandiar Pakdel, W A Daoud, Lu Sun, Xungai WangThis research intends to increase the photocatalytic efficiency of cotton fabrics coated with TiO2-based nanocomposites under illumination particularly visible light. The fabrics were functionalized using a low-temperature sol-gel method of TiO2/Metal/SiO2 nanocomposite systems. Integrating silica and noble metals into TiO2 sol was put forth for boosting its functionality. Three noble metals (gold (Au), platinum (Pt) and silver (Ag)) with four different concentrations were employed. The photocatalytic activity of the functionalized fabrics was assessed through coffee stain-removal test and photodecomposition of methylene blue (MB) under UV and visible light. The impact of coating layers on fabrics' hydrophilicity was analyzed through measuring the water contact angle as well as the water absorption time. The fabrics were characterized using XRD, SEM and EDS. It was corroborated that the presence of silica enhanced the self-stain-removal capability of fabrics under UV. Moreover, the self-cleaning property of fabrics improved under both UV and visible light after integrating the metals into the colloids. In the same line, the self-cleaning activity threshold of fabrics was shifted to visible region.
History
Journal
Applied Surface ScienceVolume
321Pagination
447 - 456Publisher
ElsevierLocation
Amsterdam , NetherlandsPublisher DOI
ISSN
0169-4332Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2014, ElsevierUsage metrics
Categories
No categories selectedKeywords
CottonNanocompositePhotocatalytic activitySol-gelVisible lightScience & TechnologyPhysical SciencesTechnologyChemistry, PhysicalMaterials Science, Coatings & FilmsPhysics, AppliedPhysics, Condensed MatterChemistryMaterials SciencePhysicsSELF-CLEANING COTTONNANO-TITANIUM-DIOXIDECELLULOSE FIBERSCOLLOIDAL TIO2TEXTILESWOOLFOCUSWATERPHOTOCATALYSTSFABRICS