MATEC Web Conf.
Volume 149, 20182nd International Congress on Materials & Structural Stability (CMSS-2017)
|Number of page(s)||5|
|Section||Session 1 : Materials & Pathologies|
|Published online||14 February 2018|
Study of structural short order and surface changes of SiO2 compounds
Laboratoire Sciences des Matériaux Inorganiques et leurs Applications, faculté des Sciences Semlalia, Université Cadi Ayyad Marrakech – Maroc.
2 IMT Lille Douai, Lille Université, Cité Scientifique, Rue Guglielmo Marconi, BP 20145, 59653 Villeneuve D’Ascq Cedex - France.
3 Institut des Matériaux Jean Rouxel, UMR 6502, Université de Nantes-CNRS, 2,14 Rue de la Houssiniére 44322, Nantes Cedex, France.
4 Laboratoire Eco-Matériaux, CeremaIdF, 120 Route des Paris – BP 216, Sourdun, 77487 Provins Cedex, France
In this work dependence between structure, surface and reactivity of SiO2 is investigated. Different samples are prepared with and without the presence of calcium cations and are characterized by different techniques. The FTIR frequency shifting of the bridging oxygen stretching vibration Si–O–Si and the binding energy shiftingof the Si2p and O1s photoelectron peaks have been observed and discussed. Results show the effect of presence of calcium on the structural change, surface and reactivity of SiO2 aggregate. After reaction, a structural and SiO2 surface changes occur, as the FTIR spectra illustrate depending on the presence of the calcium cations.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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