title: Aerosol-assisted synthesis of nanoporous silica/titania nanoparticles composites and investigation of their photocatalytic properties.
abstract: Nanoporous silica/titania nanoparticles composites with relatively large TiO2 content are successfully synthesized by aerosol-assisted co-assembly. By the hybridization of titania with nanoporous silica having high surface area, both the adsorption capability and the reaction rates for the photocatalytic decomposition of methylene blue (MB) are dramatically improved in comparison with unmodified titania nanoparticles without nanoporous silica. Through the quantitative evaluation of the amount of adsorbed and photo-decomposed organic molecule throughout the reaction process, the role of nanoporous silica layers on titania surface is clarified. Rational design of future hybrid photocatalyst with precisely controlled nanostructure will be possible by optimization of our synthetic procedure and careful study of the adsorption and photocatalytic properties.
authors.affiliation: Department of Life, Environment, and Materials Science, Faculty of Engineering, Fukuoka Institute of Technology (FIT), 3-30-1 Wajiro-Higashi, Higashi, Fukuoka 811-0295, Japan.
authors.forename: Kotaro
authors.initials: K
authors.lastname: Shimasaki
authors.forename: Norihiro
authors.initials: N
authors.lastname: Suzuki
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Miyamoto
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yamauchi
mesh_terms: D000336:Aerosols / Q000737:chemistry* / Q000528:radiation effects; D002384:Catalysis; D008027:Light; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D010316:Particle Size; D012822:Silicon Dioxide / Q000737:chemistry* / Q000528:radiation effects; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D000336:Aerosols; D046911:Macromolecular Substances; C009495:titanium dioxide; D012822:Silicon Dioxide; D014025:Titanium