Abstract
Nitrogen adsorption was employed to study the surface properties of organically modified ordered mesoporous silicas (OMS) of different structures as potential adsorbents for environmental applications. MCM41, MCM48, and SBA15 materials were functionalized via post-synthesis, one-pot synthesis and template-displacement synthesis with organic ligands containing mono- or multiple binding sites for heavy metal ions adsorption. Nitrogen adsorption isotherms at 77 K were used to evaluate the specific surface area, pore volume, pore size and pore accessibility of OMS after surface modification. It is shown that the adsorption and structural properties of OMS can be tailored by introducing multifunctional ligands of desired affinity towards mercury ions.
Published Version
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