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Issue 18, 2009
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A new route for local probing of inner interactions within a layered double hydroxide/benzene derivative hybrid material

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Abstract

This paper presents the preparation and characterization of hybrid hydrotalcite-type layered double hydroxides (Zn1−xAlx(OH)2HBSx·nH2O, with x = 0.33) where HBS is the 4-phenol sulfonate, with a detailed analysis of the grafting process of this organic entity onto the host lattice. As a set of the usual techniques (XRD, TG-DT/MS, FTIR and 27Al MAS NMR) was used to characterize the hybrid materials, this work focuses on a joint study by X-ray photoelectron spectroscopy and some quantum-calculation modeling in order to highlight the nature of the interactions between the organic and the mineral sub-systems. For the as-prepared hybrid material, the main results lead to a quasi-vertical orientation of the organic molecules within the mineral sheets via H-bond stabilization. By heating the hybrid material up to 200 °C, the structure shrinks with the condensation of the organics; the different theoretical modeling done gives an energy-stable situation when a direct attachment of the HBS sulfonate group sets up with the mineral layers, in agreement with the recorded XPS experimental data.

Graphical abstract: A new route for local probing of inner interactions within a layered double hydroxide/benzene derivative hybrid material

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Article information


Submitted
22 Oct 2008
Accepted
02 Feb 2009
First published
02 Mar 2009

Phys. Chem. Chem. Phys., 2009,11, 3554-3565
Article type
Paper

A new route for local probing of inner interactions within a layered double hydroxide/benzene derivative hybrid material

S. Fleutot, J. C. Dupin, I. Baraille, C. Forano, G. Renaudin, F. Leroux, D. Gonbeau and H. Martinez, Phys. Chem. Chem. Phys., 2009, 11, 3554
DOI: 10.1039/B818730D

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