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Infrared Evidence for Hoffman Reaction During Calcination of Surfactant-Templated Silica Films and Analysis of the Resulting Surface Sites

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Abstract

Fourier Transform Infrared transmission spectroscopy is used to characterize surfactant-templated silica films on glass. The calcination process is followed in situ and evidence for the removal of the surfactant along the Hoffman reaction is given. Once calcined, the surface of the pores of the mesoporous films is proven by deuteration experiment to be hydroxylated. Bands are attributed to isolated and hydrogen-bonded silanols. Silylation reaction with hexamethyldisilazane only occurs with isolated silanol groups.

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Authors and Affiliations

  1. CNRS-Saint-Gobain, “Surface du Verre et Interfaces”, 39 quai Lucien Lefranc, 93303, Aubervilliers Cedex, France

    Jean-Marc Berquier, Pascal Nael, Jacques Jupille & Catherine Jacquiod

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  1. Jean-Marc Berquier
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  2. Pascal Nael
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  3. Jacques Jupille
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  4. Catherine Jacquiod
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Berquier, JM., Nael, P., Jupille, J. et al. Infrared Evidence for Hoffman Reaction During Calcination of Surfactant-Templated Silica Films and Analysis of the Resulting Surface Sites. Journal of Sol-Gel Science and Technology 19, 83–87 (2000). https://doi.org/10.1023/A:1008766322651

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  • DOI: https://doi.org/10.1023/A:1008766322651

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