Partial Transformation of Imogolite by Decylphosphonic Acid Yields an Interface Active Composite Material

Tobias Lange 1 Thibault Charpentier 2 Frédéric Gobeaux 1 Sophie Charton 3 Fabienne Testard 1 Antoine Thill 1, *
* Corresponding author
1 LIONS - Laboratoire Interdisciplinaire sur l'Organisation Nanométrique et Supramoléculaire
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
2 LSDRM - Laboratoire Structure et Dynamique par Résonance Magnétique (LCF)
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : The phosphonic acid moiety is commonly used as an anchoring group for the surface modification of imogolite. However, the impact of the reaction on its structure has never been clearly analyzed before. We study the reaction of imogolite and decylphosphonic acid by combining infrared spectroscopy, X-ray scattering, scanning electron microscopy, transmission electron microscopy and solid-state nuclear magnetic resonance spectroscopy. Instead of a surface functionalization, we observe the formation of a lamellar phase interconnected with imogolite bundles. Although we find no evidence for grafted imogolite tubes, we observe the expected dispersion characteristics and stabilization of water in toluene emulsions described in literature. Based on the surface chemistry of imogolite we propose an explanation for the observed reactivity and link the structural features of the obtained composite material to its dispersibility in toluene and its observed properties at the toluene-water interface.
Complete list of metadatas

Cited literature [41 references]  Display  Hide  Download

https://hal-cea.archives-ouvertes.fr/cea-02049905
Contributor : Serge Palacin <>
Submitted on : Tuesday, February 26, 2019 - 4:48:47 PM
Last modification on : Tuesday, March 19, 2019 - 8:35:34 AM
Long-term archiving on : Monday, May 27, 2019 - 3:14:20 PM

File

Lange_Langmuir2019_V0.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : cea-02049905, version 1

Citation

Tobias Lange, Thibault Charpentier, Frédéric Gobeaux, Sophie Charton, Fabienne Testard, et al.. Partial Transformation of Imogolite by Decylphosphonic Acid Yields an Interface Active Composite Material. Langmuir, American Chemical Society, 2019, 35, pp.4068-4076. ⟨https://doi.org/10.1021/acs.langmuir.8b04242⟩. ⟨cea-02049905⟩

Share

Metrics

Record views

25

Files downloads

51