Sonosynthesis of nano TiO2 on wool using titanium isopropoxide or butoxide in acidic media producing multifunctional fabric.
This study presents a novel idea to prepare nanocrystalline structure of TiO2 under ambient pressure at 60-65 °C using in situ sonochemical synthesis by hydrolysis of either titanium isopropoxide or titanium butoxide in an acidic aqueous solution. The nano titanium dioxide coated wool fabrics possess significant antibacterial/antifungal activity and self-cleaning property by discoloring Methylene blue stain under sunlight irradiation. This process has no negative effect on cytotoxicity and tensile strength of the sonotreated fabric even reduces alkaline solubility and photoyellowing and improves hydrophilicity. More titanium isopropoxide or titanium butoxide as a precursor led to higher photocatalytic activities of the treated fabrics. Also introducing more ethanol improved the adsorption of TiO2 on the wool fabric surface leading to enhanced photocatalytic activity. EDS and XRD patterns, SEM images, X-ray mapping confirmed the presence of nano TiO2 particles on the fabric surface. The role of both solvent and precursor concentrations on the various properties of the fabric was investigated and the optimized conditions were obtained using response surface methodology.
Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Amir
A
Behzadnia
Department of Textile Engineering, Functional Fibrous Structures & Environmental Enhancement (FFSEE), Amirkabir University of Technology, Tehran, Iran. Electronic address: tex5mm@aut.ac.ir.
Majid
M
Montazer
Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Abousaeid
A
Rashidi
Skin Research Centre, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Mahnaz Mahmoudi
MM
Rad
D000818:Animals; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis; D000935:Antifungal Agents / Q000138:chemical synthesis; D001419:Bacteria / Q000187:drug effects; D000440:Butanols / Q000737:chemistry*; D002384:Catalysis; D002470:Cell Survival / Q000187:drug effects; D003116:Color; D005347:Fibroblasts / Q000187:drug effects; D005658:Fungi / Q000187:drug effects; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D008826:Microbial Sensitivity Tests; D053758:Nanoparticles / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D013718:Tensile Strength; D013784:Textiles; D014025:Titanium / Q000737:chemistry*; D014935:Wool / Q000737:chemistry* / Q000528:radiation effects*
D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D000440:Butanols; D009942:Organometallic Compounds; C009495:titanium dioxide; C102815:titanium isopropoxide; D014025:Titanium
Antibacterial/antifungal properties; Cytotoxicity; Nano TiO(2); Sonosynthesis; Wool