Sol-gel derived TiO[sub 2] microemulsion gels and coatings

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Langmuir; (United States)

DOI:https://doi.org/10.1021/la00018a014· OSTI ID:7166815

Papoutsi, D; Lianos, P; Yianoulis, P; Koutsoukos, P ^[1]

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1. Univ. of Patras (Greece)

Microemulsion gels and coatings have been obtained by the sol-gel method using titanium(IV) isopropoxide. Three types of fine water dispersions have been used as the basis sol: reverse Triton X-100 micelles in cyclohexane; quaternary water-in-oil microemulsions containing cyclohexane, 1-pentanol, sodium dodecyl sulfate, and water; and dispersions of water in pentanol in the presence of sodium dodecyl sulfate. Titanium(IV) isopropoxide was dissolved in the continuous phase and hydrolyzed by the dispersed water. Gelation occurred in a few hours in the case of cyclohexane, as the solvent of the continuous phase, and in few days in the case of pentanol. The gelation processes and the obtained microenvironment were probed with fluorescent probes. Films of thickness of the order of a hundred nanometers can be obtained by dipping glass, plastic, or aluminum plates into the solutions at their early stage of gelation. The absorption spectra of the films were characteristic of TiO[sub 2] absorption. X-ray analysis of films heated to 400-500[degree]C revealed a rutile structure. 44 refs., 8 figs., 2 tabs.

• OSTI ID: 7166815
• Journal Information: Langmuir; (United States), Journal Name: Langmuir; (United States) Vol. 10:6; ISSN LANGD5; ISSN 0743-7463
• Country of Publication: United States
• Language: English

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ABSORPTION SPECTRA
ALCOHOLS
ALKANES
CHALCOGENIDES
CHEMICAL REACTIONS
COATINGS
COHERENT SCATTERING
COLLOIDS
COMPILED DATA
CYCLOALKANES
CYCLOHEXANE
DATA
DECOMPOSITION
DIFFRACTION
DISPERSIONS
ELECTRON MICROSCOPY
EMULSIONS
FLUORESCENCE
GELS
HYDROCARBONS
HYDROLYSIS
HYDROXY COMPOUNDS
INFORMATION
LUMINESCENCE
LYSIS
MICELLAR SYSTEMS
MICROEMULSIONS
MICROSCOPY
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PENTANOLS
SCANNING ELECTRON MICROSCOPY
SCATTERING
SOL-GEL PROCESS
SOLVOLYSIS
SPECTRA
SURFACTANTS
SYNTHESIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION