Influence of physico-structural properties on the photocatalytic activity of sol-gel derived TiO2 thin films
| Autor: | M. Fallet, J. L. Deschanvres, S. Permpoon, Michel Langlet |
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| Přispěvatelé: | Laboratoire des matériaux et du génie physique (LMGP ), Institut National Polytechnique de Grenoble (INPG)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Science et Ingénierie des Matériaux et Procédés (SIMaP), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Institut National Polytechnique de Grenoble (INPG) |
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering Analytical chemistry Infrared spectroscopy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Chemical engineering Mechanics of Materials law Ellipsometry Photocatalysis General Materials Science Crystallite Crystallization Fourier transform infrared spectroscopy 0210 nano-technology ComputingMilieux_MISCELLANEOUS Sol-gel |
| Zdroj: | Journal of Materials Science Journal of Materials Science, Springer Verlag, 2006, 41 (10), pp.2915 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/s10853-006-5077-2 |
| Popis: | Sol-gel TiO2 films were deposited from various sols and heat-treated at different temperatures. Fourier transform infrared spectroscopy, ellipsometry, X-ray diffraction, and scanning electron microscopy methods have been used to study physico-structural properties of the films. These properties are discussed with respect to the experimental parameters. It is shown that, depending on sol formulations and annealing temperatures, a large range of crystallite size, crystallization degree, film porosity, and surface morphology can be covered. The photocatalytic properties of the films have been studied in relation to their physico-structural properties through the photodecomposition of malic acid. This study shows that the photocatalytic activity undergoes a complex dependence on the physico-structural properties. |
| Databáze: | OpenAIRE |
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