Control synthesis of anatase TiO2 nanobelts via alkali-hydrothermal method for the optimal conditions

TiO2 nanobelts with different synthesis methods have been actively pursued for a long time, however, a systematic study corresponding to the fabrication of TiO2 nanobelts by alkali-hydrothermal method has not been worked out by any research. Here, we systematically study the conditions such as the source of Ti and hydrothermal parameters with the assistance of X-ray diffraction (XRD), scanning electron microscope (SEM), N-2-sorption measurement and photochemical tests. The XRD and SEM measurements show that the TiO2 nanobelts exhibit excellent belt-like structures and high crystalline intensity when using tetrabutyl titanate (Ti(OBu)(4)) as the source of Ti, the volume of 10mol/L NaOH is 15mL, the hydrothermal reaction is conducted at 180 degrees C for 20h and the heat treatment system is 800 degrees C for 2h. The length-diameter ratio of the final obtained sample is about 130 and the specific surface area is 50.4m(2)/g.