Structure Determination by EXAFS of NbPeroxoCitrato Complexes in Aqueous SolutionGel Systems
| Autor: | D. Nelis, M. K. Van Bael, I. Aron, K. Van Werde, L.C. Van Poucke, Jules Mullens |
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| Rok vydání: | 2005 |
| Předmět: |
Aqueous solution
Materials science Extended X-ray absorption fine structure Condensed Matter Physics Atomic and Molecular Physics and Optics Ion symbols.namesake Crystallography Ultraviolet visible spectroscopy Group (periodic table) visual_art visual_art.visual_art_medium symbols Ceramic Raman spectroscopy Mathematical Physics |
| Zdroj: | Physica Scripta. :415 |
| ISSN: | 0031-8949 |
| DOI: | 10.1238/physica.topical.115a00415 |
| Popis: | A structural study of a niobium-peroxo-citrato complex in an aqueous solution, used as a precursor for the synthesis of ceramic oxides by an aqueous solution-gel route is performed by Nb K-edge EXAFS analysis. The results clearly indicate the formation of niobium-peroxo-citrato dimers via Nb-O-Nb links. Nb(V) ions are seven-coordinated including one Nb=O bond of a niobyl group and two Nb-O bonds from a side-on metal-peroxo group. The results are consistent with a previously proposed structural model based on Raman and UV spectroscopy studies. |
| Databáze: | OpenAIRE |
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