Article ID Journal Published Year Pages File Type
1411333 Journal of Molecular Structure 2009 7 Pages PDF
Abstract

Two novel 3D extended polyoxotantalates/niobates solid complexes: [Na6(H2O)13)][Li(H2O)(H3O)][(Ta6O19)] (1) and [Na6(H2O)13][Li(H2O)2][H(Nb6O19)] (2) have been assembled successfully based on double alkali metal ions (Li+ and Na+) and Lindqvist clusters ([Ta6O19]8−/[Nb6O19]8−) under aqueous solution. Both compounds have been characterized by IR, TG analysis and single-crystal X-ray diffraction. It is worth noting that Li and Na ions, different kinds of alkali ions, are first observed coexisting in two resultant solid crystal structures of polyoxotantalates/niobates. Further photocatalytic investigations show that methylene blue (MB) dye solution can be degraded by UV irradiation effectively in the presence of [Nb6O19]8−/[Ta6O19]8−. The experiments indicate that the degradation efficiency depends on pH value, irradiation time, initial MB concentration and different types of POM anions etc.

Related Topics
Physical Sciences and Engineering Chemistry Organic Chemistry
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