Fluoroalkyl end-capped vinyltrimethoxysilane oligomer/anatase titanium oxide 3 nanocomposites possessing photocatalytic activity even after calcination at 1000 C - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Colloid and Interface Science Année : 2012

Fluoroalkyl end-capped vinyltrimethoxysilane oligomer/anatase titanium oxide 3 nanocomposites possessing photocatalytic activity even after calcination at 1000 C

Résumé

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 tetrahy-drofuran 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.

Dates et versions

hal-00727453 , version 1 (03-09-2012)

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Citer

Sujuan Guo, Hiroaki Yoshioka, Hiroshi Kakehi, Masashi Miura, Norifumi Isu, et al.. Fluoroalkyl end-capped vinyltrimethoxysilane oligomer/anatase titanium oxide 3 nanocomposites possessing photocatalytic activity even after calcination at 1000 C. Journal of Colloid and Interface Science, 2012, 386, pp.141-145. ⟨10.1016/j.jcis.2012.08.005⟩. ⟨hal-00727453⟩
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