Interfacial sol-gel processing for preparation of porous titania particles using a piezoelectric inkjet nozzle

摘要

The aim of the present work is to apply the liquid-liquid interfacial crystallization using a piezoelectric inkjet nozzle to the sol-gel processing. The instillation process was compared with the batch process to elucidate the effectiveness of the inkjet technique on the liquid-liquid interfacial sol-gel processing. The effect of frequency and water concentration in titanium tetraisopoxide (TTIP) solution on titania particle properties was investigated for sol-gel processing with a piezoelectric inkjet nozzle. Titania particles produced by each process were calcined at 500 degrees C. The crystal structure, morphology, pore size distribution and specific surface area of titania particles were evaluated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen physisorption measurement. The photocatalytic activity of titania particles was evaluated by the photodegradation of methylene blue solution under UVC light irradiation.