کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1411333 1501856 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
3D extended polyoxoniobates/tantalates solid structure: Preparation, characterization and photocatalytic properties
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
3D extended polyoxoniobates/tantalates solid structure: Preparation, characterization and photocatalytic properties
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 934, Issues 1–3, 30 September 2009, Pages 37–43
نویسندگان
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