P1.0.7 Preparation of Porous In2O3 Powders by Ultrasonic-spray Pyrolysis Employing PMMA Microspheres Synthesized by Emulsion Polymerization and Their Gas-sensing Properties

Takeo Hyodo, Matsuo Katsuhide, Suguru Motokucho, Ken Kojio, Yasuhiro Shimizu, Shu-Ichi Furuno & Erico Fujii
The suspension containing polymethylmethacrylate (PMMA) microspheres was synthesized by the emulsion polymerization employing methyl methacrylate monomer, sodium lauryl sulfate as a surfactant and ammonium persulfate as an initiator, and porous In2O3powders(pr-In2O3(M), M: n2O3 source (N: In(NO3)3, Cl: InCl3))were prepared by ultrasonic-spray pyrolysis of In(NO3)3 or InCl3 aqueous solution containing the synthesized PMMA microspheres as a template. The average diameter of the PMMA microspheres, which was measured by dynamic light scattering, was ca. 60.2 nm. The...