Influence of Zeta potential on pore arrangement in porous oxide particles produced using ultrasonic atomization method

Abstract

This paper describes the influence of Zeta potential on pore arrangement in porous silica and alumina particles. The ultrasonic atomization method is utilized to produce silica or alumina porous particles from the slurry including the oxide nanoparticles and polystyrene latex (PSL) particles. The whole particle shape and pore arrangement are determined by the combination of the sign of Zeta potential between the oxide nanoparticles and PSL particles as well as the mixture ratio of the oxide to PSL. The mechanism is discussed through observation with cross-sectional scanning electron microscopy.