Synthesis of Nano-grade TiO2 Hollow Spheres Using Acid Catalytic Hydrolysis-Hydrothermal Method
TiO2 hollow spheres were synthesized by a combined acid catalytic hydrolysis and hydrothermal method. TiO2 hollow spheres were obtained by calcination of mixtures of carbon spheres with surface coating of TiO2 precursor under atmosphere condition. The core carbon sphere was oxidized and released in form of gasand TiO2 transforms from uncrystalline to anatase simultaneously achieced. The obtained TiO2 hollow spheres were characterized by means of SEM, TEM, XPS, XRD.The results revealed that the size and surface morphology of TiO2 hollow spheres can be controlled by adjusting the concentration of glucose aqueous solution. With the increasing of concentration of glucose solution, the diameter of TiO2 hollow sphere increased. TiO2 hollow sphere prepared with glucose concentration of 0.7 mol/L is size uniform, with the diameter of 200nm, and the thickness of TiO2 shell 25nm.
TiO2 hollow sphere carbon sphere acid catalytic hydrolysis-hydrothermal
Qian ZHANG Jian SUN Wei LI Shou-xin LIU
College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
国际会议
南京
英文
475-479
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）