AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
Abstract View
Synthesis and Photoelectrochemical Property of Monodisperse Hollow Metal Oxide Microspheres
HANEOL LEE, Youngku Sohn, WeonGyu Shin, Chungnam National University
Abstract Number: 271 Working Group: Nanoparticles and Materials Synthesis
Abstract A novel method to synthesize monodisperse hollow TiO2, SnO2 and ZnO microspheres was developed. Water droplets generated from an inkjet nozzle containing clusters of polystyrene latex (PSL) particles covered with metal oxide nanoparticles and were continuously dried up forming PSL clusters decorated with metal oxide nanoparticles. By heating the clusters up to 400 degrees of Celsius, the PSL particles are evaporated forming hollow spheres. Monodisperse hollow TiO2, SnO2 and ZnO spheres in the size range of 5.1–8.6 micrometer were consequently generated with a narrow particle size distribution. And the hollow TiO2, SnO2 and ZnO spheres have 41.0, 30.0 and 85.3 nanometer sized pores, respectively. The method enables us to have simpler and faster process to generate hollow TiO2, SnO2 and ZnO spheres and to control the diameter of hollow spheres easily by adjusting waveform applied to a nozzle compared to other processes. A potential applicability to photoelectrochemical cells was demonstrated for the prepared hollow TiO2 grown a Si substrate.