Title of article :
Effect of aging on the properties of TiO2 nanoparticle
Author/Authors :
Ebrahim Jasbi, Nafise Physics Department - Islamic Azad University Central Tehran Branch , Dorranian, Davoud Laser Laboratory, Plasma Physics Research Center - Islamic Azad University Science and Research Branch
Abstract :
Effect of aging on the properties of titanium dioxide nanoparticles produced by laser ablation process in water is investigated experimentally. The fundamental wavelength of a Q-switched Nd:YAG laser was employed to irradiate a high-purity Ti plate in distilled water at temperatures of 20, 35, 50 and 65 C. Produced nanoparticles were diagnosed by UV–Vis–NIR spectroscopy, X-ray diffraction method, and dynamic light scattering device immediately after production and 1 week after. Bandgap energy of samples was extracted using Tauc method. Size of nanoparticles was increased after a week and their bandgap energy was decreased. Results show that the phase of TiO2 nanoparticles was transited from brookite to rutile after 1 week.
Keywords :
Laser ablation , TiO2 nanoparticle , Absorption spectra , XRD , Exitonic resonance
Journal title :
Astroparticle Physics
