Effect of aging on the properties of TiO(2) nanoparticle

Effect of aging on the properties of titaniumdioxide nanoparticles produced by laser ablation process inwater is investigated experimentally. The fundamentalwavelength of a Q-switched Nd:YAG laser was employedto irradiate a high-purity Ti plate in distilled water attemperatures of 20, 35, 50 and 65 ̊ C. Produced nanoparticleswere diagnosed by UV–Vis–NIR spectroscopy,X-ray diffraction method, and dynamic light scatteringdevice immediately after production and 1 week after.Bandgap energy of samples was extracted using Taucmethod. Size of nanoparticles was increased after a weekand their bandgap energy was decreased. Results show thatthe phase of TiO(2) nanoparticles was transited from brookiteto rutile after 1 week.