Novel and facile synthesis of transparent-monolithic TiO2 gels by sol-gel method based on an esterification reaction

Elghniji, K.; Rabah, Z. A.; Elaloui, E

doi:10.1515/msp-2016-0091

Artykuł - szczegóły

Tytuł artykułu

Novel and facile synthesis of transparent-monolithic TiO2 gels by sol-gel method based on an esterification reaction

Autorzy

Elghniji K. , Rabah Z. A. , Elaloui E

Wybrane pełne teksty z tego czasopisma

Identyfikatory

DOI

10.1515/msp-2016-0091

Warianty tytułu

Języki publikacji

Abstrakty

Transparent TiO₂ monoliths were obtained through a modified sol-gel route from titanium isopropoxide as a precursor. By controlling the hydrolysis of this precursor through the intermediate of esterification reaction between acetic acid and isopropanol at 40 °C, transparent TiO₂ xerogel monoliths were obtained. The monoliths prepared by this method were transparent in the wavelengths between 400 nm and 700 nm. Fourier transform infrared (FT-IR) spectroscopy suggested that the acetic acid played also an active role as a chelating agent, forming Ti[(OH)_y(OOCCH₃)_x] less reactive species. Powder X-ray diffraction confirmed the amorphous-to-anatase phase transformation with the formation of unknown Ti-containing complex at 90 °C. Only anatase TiO₂ could be observed in the samples calcined at 250 °C and 450 °C. Optical aspects of the gel (transparent-transluscent transformation of monolithic gel) and gelation time were controlled by changing the amount of external water.

Słowa kluczowe

sol-gel esterification TiO2 monoliths transparent

Wydawca

De Gruyter

Czasopismo

Materials Science Poland

Rocznik

2016

Tom

Vol. 34, No. 3

Strony

633--640

Opis fizyczny

Bibliogr. 35 poz., rys., tab.

Twórcy

autor

Elghniji K.

k.elghniji@yahoo.fr

Materials, Environment and Energy Laboratory, (06/UR/12-01) Science Faculty of Gafsa, 2112, Gafsa, University of Gafsa, Tunisia

autor

Rabah Z. A.

Materials, Environment and Energy Laboratory, (06/UR/12-01) Science Faculty of Gafsa, 2112, Gafsa, University of Gafsa, Tunisia

autor

Elaloui E

Materials, Environment and Energy Laboratory, (06/UR/12-01) Science Faculty of Gafsa, 2112, Gafsa, University of Gafsa, Tunisia

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-cfe04b32-973e-4462-967d-dc350544d004