Selective adsorption of Hg2+ by thiol-functionalized nanoporous silica

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Abstract
Thiol-functionalized nanostructured silicas with uniform porosities exhibit selective complexation affinity for Hg2+, while other metal ions (Cd2+, Pb2+, Zn2+, Co3+, Fe3+, Cu2+ and Ni2+) have little or no binding ability with the adsorbents.