COLL 386 |
| Nanocrystalline zeolites are porous nanomaterials with crystal sizes of less than 100 nm and very large external and internal surface areas. The properties (for example, hydrophobicity/hydrophilicity, acidity) of the zeolite external surface were varied by functionalization with organosilanes, such as aminopropyltriethoxysilane (APTES). The functionalized nanocrystalline zeolites were extensively characterized by solid state NMR, nitrogen adsorption isotherms, dynamic light scattering and zeta potential measurements. The functionalized nanocrystalline zeolites were evaluated for applications in the adsorption of copper, chromate and arsenate from aqueous solution. Nanocrystalline zeolites with bifunctional capacity for adsorption on the external surface followed by reaction on the internal surface were also prepared and evaluated for applications in environmental catalysis. |
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The Physical Chemistry of Environmental Interfaces
2:00 PM-6:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 225, Oral
Division of Colloid & Surface Chemistry |