In situ synthesis and exhaustion of nano TiO2 on fabric samples using laser ablation method

Abstract

In this research work, TiO2 nanoparticles were in situ synthesized on cotton fabrics using laser ablation method. For producing the TiO2 nanoparticles, the Ti plate were irradiated with Nd:YAG pulsed laser operating at 1064 nm in deionized water medium. Simultaneously, the cotton samples were placed near Ti plate in ablation container. Laser fluence was 1, 2 and 3 J/cm2 for samples 1–3 to make nanoparticles with different sizes. The morphology and size of prepared nano particles were investigated using scanning electron microscope (SEM) and transmition electron microscope (TEM). The concentration, structure and crystalinity of synthesized nano TiO2 was studied using absorption spectrophotometry and X-Ray diffraction method. The morphology changes of cotton samples after laser ablation and in situ synthesizing the TiO2 nanoparticles was compared using SEM. The hydrophilicity changes of cotton were determined by water absorption time method. Finally the cotton samples were stained by one ml of diluted methylene blue and the color changes of samples after daylight irradiation were studied with reflective spectrophotometry. Results show that, by increasing the laser fluence, the concentration and size of synthesized TiO2 nano particles increases. The self-cleaning and photocatalytic activity increases by increasing the concentration of TiO2 nanoparticles.