Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

Infrared spectroscopy has been used to analyze the structural changes in samples prepared by the sol-gel method. Silica gels were prepared from alcoholic solutions of tetraethylorthosilicate (TEOS) with different H2O/TEOS molar ratios. The IR spectra of these gels, in the Si–O bond stretching region, shows that their structure strongly depends on the H2O/TEOS ratio. The relative change in intensity of the Si–O stretching modes, in samples prepared using different H2O/TEOS ratios, are interpreted in terms of different degrees of structural disorder. According to our infrared absorption data, a decrease in the H2O/TEOS ratio from about 7, the SiO2 structure evolves from a three-dimensional network toward a chainlike structure.

Bibliography

Martı́nez, J. R., Ruiz, F., Vorobiev, Y. V., Pérez-Robles, F., & González-Hernández, J. (1998). Infrared spectroscopy analysis of the local atomic structure in silica prepared by sol-gel. The Journal of Chemical Physics, 109(17), 7511–7514.

Authors 5
  1. J. R. Martı́nez (first)
  2. F. Ruiz (additional)
  3. Y. V. Vorobiev (additional)
  4. F. Pérez-Robles (additional)
  5. J. González-Hernández (additional)
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Dates
Type When
Created 23 years, 1 month ago (July 26, 2002, 8:16 a.m.)
Deposited 1 year, 6 months ago (Feb. 10, 2024, 3:25 p.m.)
Indexed 1 month, 3 weeks ago (July 7, 2025, 9:06 a.m.)
Issued 26 years, 10 months ago (Nov. 1, 1998)
Published 26 years, 10 months ago (Nov. 1, 1998)
Published Print 26 years, 10 months ago (Nov. 1, 1998)
Funders 0

None

@article{Mart_nez_1998, title={Infrared spectroscopy analysis of the local atomic structure in silica prepared by sol-gel}, volume={109}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.477374}, DOI={10.1063/1.477374}, number={17}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Martı́nez, J. R. and Ruiz, F. and Vorobiev, Y. V. and Pérez-Robles, F. and González-Hernández, J.}, year={1998}, month=nov, pages={7511–7514} }