Зависимость физических и оптических свойств наноструктурного диоксида титана от кислотно-щелочного состояния исходного раствора при золь-гель синтезе

Abstract

Titanium dioxide (TiO2) was synthesized by sol-gel method at different values of pH = 3, 6, 8, 9, or 10. X-ray phase analysis has shown that in an acid rout an anatase phase was crystallized, and in an alkaline rout an amorphous phase of TiO2 was achieved. The synthesized powders are differ in the average size of the nanoparticles (7-49 nm), the specific surface area (77-140 m2/g) and the band gap before and after annealing (3.19-3.72 eV).