Structural variations as a function of surface adsorption in nanostructured particles

摘要: Macroscopic (adsorption isotherm and micro-calorimetry measurement) microscopic (in situ X-ray diffraction IR spectroscopy) approaches were used to study the influence of water adsorption on γ-Fe 2 O 3 nanoparticles. A nonmonotonic variation lattice parameter is revealed when relative pressure (p/p 0 ) increases from 0.03 0.96 with a maximum deviation for p/p 0.1. With spectroscopy, similar results observed since modification structural bands has been shown. In investigations as well thermodynamics considerations lead one important conclusion: in relation strains induced during formation monolayer nanoparticles surface.