Rapid Sonosynthesis of N‐Doped Nano TiO₂ on Wool Fabric at Low Temperature: Introducing Self‐cleaning, Hydrophilicity, Antibacterial/Antifungal Properties with low Alkali Solubility, Yellowness and Cytotoxicity

Abstract

Nano nitrogen-doped titanium dioxide was rapidly prepared by hydrolysis of titanium isopropoxide at 75-80°C using in situ sonochemical synthesis by introducing ammonia. Various concentrations of titanium isopropoxide were examined to deposit nano nitrogen-doped titanium dioxide through impregnation of the wool fabric in ultrasound bath followed by curing. The antibacterial/antifungal activities of wool samples were assessed against two common pathogenic bacteria including Escherichia coli and Staphylococcus aureus and the diploid fungus Candida albicans. The sonotreated wool fabrics indicated no adverse effects on human dermal fibroblasts. The presence of nanoparticles on the sonotreated wool fabrics were confirmed by FE-SEM images and EDS patterns and X-ray mapping and the crystalline size of nanoparticles were estimated through XRD results. The role of both pH and precursor concentration on the various properties of the fabric was investigated and the optimized conditions introduced using response surface methodology.

Biocompatibility and antibacterial activity of nitrogen-doped titanium dioxide nanoparticles for use in dental resin formulations

“…These data suggest that N-TiO 2 NPs may generate ROS at levels that stimulate mitochondrial activity and increased cellular metabolism, but the cells are equipped with enough antioxidant mechanisms to protect them and preserve their viability. These data are in agreement with Behzadnia et al, 52 who demonstrated no adverse effects when fabrics treated with N-TiO 2 NPs were exposed to normal human dermal fibroblasts. Yet, the findings in the present study are also in contrast with the viability and cellular responses reported in other studies.…”

Photocatalytic, Antimicrobial and Biocompatibility Features of Cotton Knit Coated with Fe-N-Doped Titanium Dioxide Nanoparticles

“…The nano TiO 2 -coated fabrics, as well as those impregnated with doped TiO 2 , can harbor significant antibacterial (against Escherichia coli and Staphylococcus aureus ) and antifungal (against Candida albicans ) [18] activity, as well as self-cleaning properties, while having no adverse effects on human dermal fibroblasts [19,20]. …”

Optimizing the photocatalytic properties and the synergistic effects of graphene and nano titanium dioxide immobilized on cotton fabric

“…The test samples were removed from the cell cultures, and the cells were reincubated in fresh medium. After incubation for 24 h, the cell viability was determined by means of the MTT assay [25][26][27]. At least three data were averaged.…”