Synthesis and characterization of pure anatase TiO_2 nanoparticles

摘要

Pure anatase TiO_2 nanoparticles were synthesized by microwave assisted sol-gel method and further characterized by powder X-ray diffraction (XRD), energy dispersive x-ray analysis (EDAX), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and UV-Visible spectrophotometer, SEM images showed that TiO_2 nanoparticles were porous structure. The XRD patterns indicated that TiO_2 after annealed at 300 ℃ for 3 h was mainly pure anatase phase. The crystallite size was in the range of 20-25 nm, which is consistent with the results obtained from TEM images. Microwave heating offers several potential advantages over conventional heating for inducing or enhancing chemical reactions.