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Elsevier, Materials Science and Engineering: C, 6-8(23), p. 1069-1072

DOI: 10.1016/j.msec.2003.09.125

Elsevier, Materials Science and Engineering: C

DOI: 10.1016/j.msec.2003.09.123

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Surface hydroxyls in porous silica: a Raman spectroscopy study

Journal article published in 2003 by C. M. Carbonaro, F. Clemente, L. Corda, R. Corpino, P. C. Ricci ORCID, Ricci Pc, A. Anedda
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The surface vibrational properties of sol-gel synthesized porous silica are investigated as a function of sample porosity. By considering the Raman contribution of the physisorbed water, the analysis of the fundamental O-H stretching range (3000-3800 cm(-1)) displays the vibrational modes related to Si-OH species on the surface of the porous matrix. The sample porosity affects the H-bonding interaction between OH-related groups and influences the hydrophilic character of the surface: a curvature effect can be hypothesized. (C) 2003 Elsevier B.V. All rights reserved.