Titania-Silica Materials for Enhanced Photocatalysis

Elisa Isabel Garcia Lopez, Giuseppe Marci', Marisa Rico-Santacruz, Elena Serrano, Javier García-Martínez, Javier García-Martínez

Risultato della ricerca: Articlepeer review

3 Citazioni (Scopus)

Abstract

Mesoporous titania-organosilica nanoparticles comprised of anatase nanocrystals crosslinked with organosilica moieties have been prepared by direct co-condensation of a titania precursor, tetrabuthylortotitanate (TBOT), with two organosilica precursors, 1,4-bis(triethoxysily1) benzene (BTEB) and 1,2-bis(triethoxysily1) ethane (BTEE), in mild conditions and in the absence of surfactant. These hybrid materials show both high surface areas (200-360 m(2)g 1) and pore volumes (0.3 cm(3)g(-1)) even after calcination, and excellent photoactivity in the degradation of rhodamine 6G and in the partial oxidation of propene under UV irradiation, especially after the calcination of the samples. During calcination, there is a change in the Tily coordination and an increase in the content of Si-O-Ti moieties in comparison with the uncalcined materials, which seems to be responsible for the enhanced photocatalytic activity of hybrid titania-silica materials as compared to both uncalcined samples and the control TiO2.
Lingua originaleEnglish
pagine (da-a)18338-18344
Numero di pagine7
RivistaCHEMISTRY-A EUROPEAN JOURNAL
Volume21
Stato di pubblicazionePublished - 2015

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1600.1605???

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