Shape-controlled synthesis of TiO2 nanostructures

In the present work, hydrothermal process was utilized to prepare TiO2 nanostructures with three different morphologies including nanotubes, nanorods and flower-like nanoparticles. The synthesized materials were characterized by X-ray diffraction (XRD) method and electron microscopy. The nanorods have an average diameter of 100 nm with a few micrometer lengths. Phase analysis by XRD indicated the nanorods mainly composed of anatase phases. The flower-like structure consisted of radially oriented nanorods (~100 nm) with a mixture of anatase and rutile phases. Due to the reaction of TiO2 nanoparticles with NaOH, Na3TiO7.nH2O nanotubes with 15 nm diameter were obtained. The nanotubes were decomposed to nanometric particles with a mixture of anatase and rutile phases after calcination at 500 °C for 2 h in air.

کلیدواژه ها:

TiO2 ، Nanostructures ، Hydrothermal ، Morphology