Synthesis of Organically Templated Nanoporous Tin(II/IV) Phosphate for Radionuclide and Metal Sequestration

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...

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Bibliographic Details
Published in:Inorganic chemistry 2006-03, Vol.45 (6), p.2382-2384
Main Authors: Wellman, Dawn M, Mattigod, Shas V, Parker, Kent E, Heald, Steve M, Wang, Chongmin, Fryxell, Glen E
Format: Article
Language:English
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Summary: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 SnII/SnIV 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 matrixes. Results indicate that tin(II) phosphate removed >95% of all contaminants investigated from solution.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic051949v