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Wang, De-Yi ; Costa, F. R. ; Vyalikh, A. ; Leuteritz, A. ; Scheler, U. ; Jehnichen, D. ; Wagenknecht, U. ; Häußler, L. ; Heinrich, G.
One-step synthesis of organic LDH and its comparison with regeneration and anion exchange method

A novel one-step method has been developed to synthesize organically modified layered double hydroxide under ambient condition and without requirement of carbonate-free condition. This method has been found to be effective in the presence of several competitive anions and provides modified products with improved homogeneity, crystallinity, etc., as compared to other commonly known methods such as anion exchange and regeneration. The critical control of the pH value of the reaction medium is a key aspect of this method and provides a high degree of intercalation of the surfactant without forming any pure LDH phase. WAXS and FTIR analysis prove the homogeneous nature of the modified LDH. In contrast to the regeneration method, the chemical environment of the metal hydroxide layers remains identical to that of the unmodified LDH, as confirmed from the solid-state 27Al MAS NMR spectroscopy.

Quelle
Chemistry of Materials 21

Seiten
4490-4497

DOI
http://dx.doi.org/10.1021/cm901238a

Erschienen am
January 2010
 
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