Through the marriage of mesoporous ceramics with self-assembled monolayer chemistry, the genesis of a powerful new class of environmental sorbent materials has been realized. By coating the mesoporous ceramic backbone with a monolayer terminated with a lanthanide-specific ligand, it is possible to couple high lanthanide binding affinity with the high loading capacity (resulting from the extremely high surface area of the support). This lanthanide-specific ligand field is created by pairing a “hard” anionic Lewis base with a suitable synergistic ligand, in a favorable chelating geometry. Details of the synthesis, characterization, lanthanide binding studies, binding kinetics, competition experiments and sorbent regeneration studies are summarized
Revised: January 23, 2006 |
Published: November 1, 2004
Citation
Fryxell G.E., H. Wu, Y. Lin, W.J. Shaw, J.C. Birnbaum, J.C. Linehan, and Z. Nie, et al. 2004.Lanthanide Selective Sorbents: Self-Assembled Monolayers on Mesoporous Supports (SAMMS).Journal of Materials Chemistry 14, no. 22:3356-3363.PNNL-SA-42916.