Preparation and Characterization of Titanium Dioxide Nanoparticles by Laser Ablation in Liquid

Abstract

In this study, titanium dioxide (TiO₂) nanoparticles were created by pulsed laser ablation in a liquid media. One hundred, two hundred, or three hundred pulses were fired from a Q-switched Nd:YAG laser, each packing 480 mJ of energy. The results demonstrated the efficient production of pure TiO₂ nanoparticles crystalline in the brookite form. The filed-emission scanning electron microscopy (FE-SEM) scans disclosed spherical particles measuring between 50.81 and 71.22 nanometers in diameter. The Brunauer-Emmett-Teller (BET) study showed that the surface area of TiO₂ was quite high, ranging from 82.44 to 98.67 m²/g. Oxygen (O) and titanium (Ti) peaks that stood out during the EDX examination confirmed that the nanoparticles were pure. Furthermore, FTIR identified a unique absorption peak at 657 cm^-1, which is indicative of stretching vibrations of Ti-O-Ti. This study was effective in developing a method for producing well-characterized TiO₂ nanoparticles with potential applications across a wide range of industries.