Functionalized mesoporous adsorbents for Pt(Ⅱ) and Pd(Ⅱ) adsorption from dilute aqueous solution

摘要

The surface of the SBA-15 was functionalized with imidazole or thiol functional group via grafting method. Binding behaviors of the adsorbents toward Pt(Ⅱ) and Pd(Ⅱ) were examined. The properties of the adsorbents such as pore structure and pore uniformity were also investigated. The pore structure of as-synthesized adsorbents was conserved throughout the preparing steps. The results showed that imidazole- or thiol-functionalized adsorbents showed a high affinity for Pt(Ⅱ) and Pd(Ⅱ) metals in aqueous solution.