Nanopowders and nanostructured oxides: Phase transitions and surface reactivity

Abstract

We report on experimental characterizations of nanocrystalline oxides by Raman spectroscopy, which has proven to be a reference technique when the scale of the coherent domains becomes too small for X-ray diffraction. Crystallite-size modification of ZrO2 and WO3 phase diagrams along with surface modes, surface reactions and adsorbed species characterization on WO3 and SnO2 will be reviewed. Copyright © 2007 John Wiley & Sons, Ltd.