Effect of surface chemistry on the thermodynamics and conductivity of water in silica nanopores

N. Fekkar-Nemmiche; S. Devautour-Vinot; B. Coasne; F. Henn; A. Mehdi; C. Reye; R. Corriu; A. Collet

doi:10.1140/epjst/e2007-00014-2

EPJ

Effect of surface chemistry on the thermodynamics and conductivity of water in silica nanopores

N. Fekkar-Nemmiche¹^,2, S. Devautour-Vinot¹, B. Coasne¹, F. Henn¹, A. Mehdi³, C. Reye³, R. Corriu³ and A. Collet⁴

¹ Laboratoire de Physicochimie de la Matière Condensée, UMR 5617, Université Montpellier II, Place E. Bataillon, 34095 Montpellier Cedex 5, France
² Département Mines et Métallurgie, USTO, BP. 1505, El Mnaouer, 31200 Oran, Algeria
³ Laboratoire de Chimie Moléculaire et Organisation du Solide, UMR 5637, Place E. Bataillon, 34095 Montpellier Cedex 5, France
⁴ Laboratoire Organisation Moléculaire: Évolution et Matériaux Fluorés, UMR 5073, Université Montpellier II, Place E. Bataillon, 34095 Montpellier Cedex 5, France

Abstract

The thermodynamics and conductivity of water confined in nanoporous silicas SBA-15 are studied using differential scanning calorimetry and impedance spectroscopy. The effect of the water/surface interaction is addressed by investigating samples with different surface chemistries.