Preparation and photocatalytic activity of porous spherical TiO2 particles comprised of H3PW12O40 in hydrophobic nanopores
作者： Kei Yasui , Toshihiro Isobe , Sachiko Matsushita , Akira Nakajima
DOI: 10.1007/S10853-012-7007-9
关键词: Adsorption 、 Anatase 、 Outer sphere electron transfer 、 Photocatalysis 、 Octadecylphosphonic acid 、 Calcination 、 Materials science 、 Mesoporous material 、 Inorganic chemistry 、 Monolith
摘要: Porous TiO2 sphere particles were prepared by impregnating titanium (IV) oxysulfate solutions into organic monolith particles, with subsequent calcination in air. The powder possessed pores of meso-order. Its crystalline phase was anatase. Then, 12 Tungsto(VI) phosphoric acid (PW12) present the mesopores. entire surface modified to be hydrophobic octadecylphosphonic (ODP). Subsequent UV illumination water removed PW12 and ODP adsorbed onto outer surface. obtained spherical acidic nanopores exhibited high photocatalytic performance against removal 1,4-dioxane water. Detailed analysis revealed that this material both ethylene glycol diformate (EGDF), main intermediate photocatalysis 1,4-dioxane. Results suggest enhance adsorption EGDF play an important role overall system.
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