Nanoporous tin (II/IV) phosphate materials, with spherical morphology, have been synthesized using cetyltrimethylammonium chloride (CH3(CH2)15N(CH3)3Cl) as the surfactant. The structure of the material is stable at 500°C; however, partial oxidation of the material occurs with redox conversion of Sn2+ to Sn4+, resulting in a mixed Sn(II)/ Sn(IV) material. Preliminary batch contact studies were conducted to assess the effectiveness of nanoporous tin phosphate, NP-SnPO, in sequestering redox sensitive metals and radionuclides, technetium(VII), neptunium(V), thorium(IV), and a toxic metal, chromium(VI), from aqueous matrices. Results indicate tin (II) phosphate removed > 95% of all contaminants investigated from solution.
Revised: May 30, 2006 |
Published: March 20, 2006
Citation
Wellman D.M., S.V. Mattigod, K.E. Parker, S.M. Heald, C.M. Wang, and G.E. Fryxell. 2006.Synthesis of organically templated nanoporous tin (II/IV) phosphate for radionuclide and metal sequestration.Inorganic Chemistry 45, no. 6:2382-2384.PNNL-SA-46789.doi:10.1021/ic051949v