Fluidized bed deacidification of TiO2 nanoparticles made by flame aerosol process

摘要

Deacidification and performance of aerosol synthesis-derived TiO2 nanoparticles is presented by wet-hot-air fluidizing method. The effect of disacidifying temperature and time on final pH value is investigated. The pH value of TiO2 nanoparticles can reach 4.02 after 2.5-hour deacidification at 450 ℃, without crystalline structure transformation. The FTIR spectrum showed that the H2O absorbed on the surface was removed to some extent. LPS results showed that, the size of TiO2 particle was smaller after deacidification.