3D extended polyoxoniobates/tantalates solid structure: Preparation, characterization and photocatalytic properties

Long Shen; Yan Qing Xu; Yuan Zhe Gao; Feng Yun Cui; Chang Wen Hu

doi:10.1016/j.molstruc.2009.06.018

3D extended polyoxoniobates/tantalates solid structure: Preparation, characterization and photocatalytic properties

Long Shen, Yan Qing Xu^*, Yuan Zhe Gao, Feng Yun Cui, Chang Wen Hu

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

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.

Original language	English
Pages (from-to)	37-43
Number of pages	7
Journal	Journal of Molecular Structure
Volume	934
Issue number	1-3
DOIs	https://doi.org/10.1016/j.molstruc.2009.06.018
Publication status	Published - 30 Sept 2009

Keywords

Lindqvist structure
Niobium
Photocatalysis
Polyoxometalate
Tantalum

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10.1016/j.molstruc.2009.06.018

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@article{be408a8478c94c3c8848abd196a22028,

title = "3D extended polyoxoniobates/tantalates solid structure: Preparation, characterization and photocatalytic properties",

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.",

keywords = "Lindqvist structure, Niobium, Photocatalysis, Polyoxometalate, Tantalum",

author = "Long Shen and Xu, {Yan Qing} and Gao, {Yuan Zhe} and Cui, {Feng Yun} and Hu, {Chang Wen}",

year = "2009",

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doi = "10.1016/j.molstruc.2009.06.018",

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journal = "Journal of Molecular Structure",

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T1 - 3D extended polyoxoniobates/tantalates solid structure

T2 - Preparation, characterization and photocatalytic properties

AU - Shen, Long

AU - Xu, Yan Qing

AU - Gao, Yuan Zhe

AU - Cui, Feng Yun

AU - Hu, Chang Wen

PY - 2009/9/30

Y1 - 2009/9/30

N2 - 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.

AB - 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.

KW - Lindqvist structure

KW - Niobium

KW - Photocatalysis

KW - Polyoxometalate

KW - Tantalum

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JO - Journal of Molecular Structure

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ER -

3D extended polyoxoniobates/tantalates solid structure: Preparation, characterization and photocatalytic properties

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Keywords

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