Colloidal functionalized calcined zeolitenanocrystals

Abstract

Template-free suspensions of functionalized zeolite nanoparticles are obtained by two consecutive grafting procedures. Firstly, organic ligands grafted at template-containing zeolite nanocrystals inhibit irreversible aggregation during the combustion of the structure directing agent. A second grafting provides stable colloidal functionalized zeolite nanocrystals with organic ligands grafted at silicon or aluminium surface zeolite atoms. This procedure is applicable to zeolites with any framework composition and opens up routes for the preparation of various functional materials (controlled release capsules, chemical sensors and adsorbents for example).