Skip to Main content Skip to Navigation
Theses

Synthèses de nanocristaux de TiO2 anatase à distribution de taille contrôlée. Influence de la taille des cristallites sur le spectre Raman et étude des propriétés de surface.

Abstract : The determination of the size and the size distribution of anatase TiO2 nanopowders using Raman spectroscopy is presented. Several synthesis methods (soft chemistry, water-in-oil microemulsion, continuous hydrothermal synthesis) are used in order to control the size (from 3 to 20 nm), shape, phase and size distribution. The shift and width of the anatase Eg peak are often used to obtain the nanoparticles size. Homever, this peak is also sensitive to nonstoichiometry and others parameters. Low-frequency Raman scattering does not suffer from this problem. Size distibutions obtained by Raman spectroscopy and MET micrographs are compared. Finally, in situ Raman spectroscopy is used to study the surface adsorption influence on TiO2 nanocrystals.
Document type :
Theses
Complete list of metadatas

Cited literature [179 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00129329
Contributor : Catherine Pighini <>
Submitted on : Tuesday, March 13, 2007 - 4:52:40 PM
Last modification on : Friday, June 8, 2018 - 2:50:07 PM
Long-term archiving on: : Friday, November 25, 2016 - 2:34:36 PM

Identifiers

  • HAL Id : tel-00129329, version 2

Collections

Citation

Catherine Pighini. Synthèses de nanocristaux de TiO2 anatase à distribution de taille contrôlée. Influence de la taille des cristallites sur le spectre Raman et étude des propriétés de surface.. Matériaux. Université de Bourgogne, 2006. Français. ⟨tel-00129329v2⟩

Share

Metrics

Record views

1995

Files downloads

17281