Portal de Periódicos da CAPES

Synthesis of TiO 2 Nanoparticles Via Laser Ablation at Titanium-Water Interface

2010; Taylor & Francis; Volume: 121; Issue: 1 Linguagem: Inglês

10.1080/10584587.2010.492020

1607-8489

Arpita Nath, Subrata Laha, Alika Khare,

Electronic and Structural Properties of Oxides

Pulsed laser induced breakdown at target-water interface is used to synthesize TiO2 nanoparticles. Ablation at defocused and tightly focused condition resulted in TiO2 nanoparticles in anatase and rutile phase respectively. In addition, insufficiently oxidized Ti2O3 nanoparticles are also observed due to transient quenching during laser induced breakdown process. The TiO2 nanoparticle phase and sizes are diagnosed using TEM. The optical properties are characterized using Raman and UV-Vis spectra. The estimated optical band gap from the absorption spectra of TiO2 anatase phase is 3.23 eV and of TiO2 rutile phase is 3.0 eV.