화학기상응축공정에서 TiO2 나노입자 특성에 미치는 반응온도와 전구체 농도의 영향-Part II : 분말형성에 대한 반응인자적 분석

Abstract

Characteristics of Ti0 2 nanoparticles controlled by precursor flow rate and reaction temperature in chemical vapor condensation process were interpreted in the view of decisive reaction factors, i.e. supersaturation ratio, concentration of vapor molecule, collision frequency and rate, and residence time, which directly affect the particle size and size distribution in CVC reactor. As results, the increases of precursor flow rate and reaction temperature induced the increase in the average sÏzes of TiO2 nanoparticles in CVC reactor by acceleration of coagulation growth due to the increase of collision between Ti02 vapor molecules and particles. The effects of reaction factors on the characteristics of Ti02 nanoparticles were discussed with considering particle formation process in CVC reactor under given process parameters.