Synthesis of TiO_2(B) using glycolato titanium complex and post-synthetic hydrothermal crystal growth of TiO_2(B)

摘要

Titanium dioxide (TiO_2)(B), one of metastable polymorphs of TiO_2 was prepared by hydrothermal reaction of glycolato peroxotitanium complex ([Ti_4(C_2H_2O_3)_4(C_2H_3O_3)_2(O_2)_2]~(6-)) in the presence of H_2SO_4 as an additive. Characterization by X-ray diffraction (XRD), Raman spectroscopy, and transmission electron microscopy (TEM) revealed that the obtained powders were single-phase TiO_2(B) with rod-like shape. Particle size and aspect ratio of TiO_2(B) can be controlled by post-synthetic hydrothermal crystal growth (PHCG) of the as-prepared powder sample.