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Fluoroalkyl end-capped vinyltrimethoxysilane oligomer/anatase titanium oxide nanocomposites possessing photocatalytic activity even after calcination at 1000 °C |
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| Authors: | Sujuan GuoHiroaki Yoshioka Hiroshi KakehiYoshihiro Kato Masashi MiuraNorifumi Isu Bruno AmeduriHideo Sawada |
| Institution: | a Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan b R & D Center, LIXIL Corporation, Tokoname, Aichi 479-8588, Japan c Ingénierie et Architecture Macromoléculaire, Institut Charles Gerhardt, Ecole Nationale Supérieure de Chimie de Montpellier (UMR 5253-CNRS), 8, rue de l’Ecole Normale, 34296 Montpellier Cedex 1, France |
| Abstract: | Fluoroalkyl end-capped vinyltrimethoxysilane oligomer RF-(VM)n-RF] underwent the sol-gel reaction under alkaline conditions in the presence of anatase titanium oxide nanoparticles (an-TiO2) in tetrahydrofuran to give the corresponding fluorinated oligomer/anatase titanium oxide nanocomposites RF-(VM-SiO2)n-RF/an-TiO2]. Crystalline structure of an-TiO2 in the nanocomposites thus obtained was found to keep completely its structure without phase transformation to rutile even after calcination at 1000 °C, although crystalline structure of the original an-TiO2 nanoparticles underwent a complete phase transformation to the rutile under similar conditions. Interestingly, RF-(VM-SiO2)n-RF/an-TiO2 nanocomposites before and after calcination at 1000 °C exhibited the similar photocatalytic activity for the decolorization of methylene blue under UV light irradiation. |
| Keywords: | Fluorinated silicon oligomer Anatase titanium oxide nanoparticle Nanocomposite Phase transformation Rutile UV irradiation Photocatalytic activity |
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