Author/Authors :
Barthelemy، نويسنده , , A. and Duchamp، نويسنده , , C. and Uttaro، نويسنده , , J.-P. and Rousseau، نويسنده , , C. and Fenet، نويسنده , , B. and Ananchenko، نويسنده , , G. and Lang، نويسنده , , S. and Coleman، نويسنده , , A.W. and Ripmeester، نويسنده , , J. and Guillard، نويسنده , , C. and Elsellami، نويسنده , , L. and Lamartine، نويسنده , , R. and Felix، نويسنده , , C. and Vocanson، نويسنده , , F.، نويسنده ,
Abstract :
Translucent organic–inorganic hybrid porous silica materials have been prepared via the acid-catalysed hydrolysis and condensation of TEOS and various p-sulphonatocalix[n]arene derivatives. Xerogels and aerogels have been prepared. The morphology of the gels was characterized by electron microscopy (SEM and ESEM) and by hyperpolarized 129Xe NMR. The aerogels showed a porous structure not influenced by the size of the calixarene derivative incorporated in the gel. The efficiency of these new materials towards the retention of ammonium ions was discussed.
Keywords :
Ammonium ions , Electron microscopy , Calixarene , Hybrid materials , complexation
