Low melting point and high stability polyoxomolybdate-based ionic liquids as photocatalysts

Tao Dong; Fa Wang Chen; Min Hua Cao; Chang Wen Hu

Low melting point and high stability polyoxomolybdate-based ionic liquids as photocatalysts

Tao Dong, Fa Wang Chen, Min Hua Cao^*, Chang Wen Hu

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

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

4 Citations (Scopus)

Abstract

The polyoxometalate-imidazole ionic liquids(POM-ILs) with low melting points at 94.5 and 95.5 °C, [C_nmim]₄[Mo₈O₂₆](C_nmim=1-alkyl-3-methylimidazolium, n=12,14), have been successfully synthesized and characterized by DSC, single-crystal X-ray diffraction and TGA, etc. The two POM-ILs have relatively high stability with decomposing temperature up to about 347 and 344 °C, respectively. Further photocatalytic performance was measured via the degradation of rhodamine B(RB) in aqueous solution. The experiments show that the conversion reached to 90% after 90 min under UV-light and the degradation efficiency depended on pH value, different dosages and so on. In addition, the catalysts can be recycled for several times without significant loss of activity.

Original language	English
Pages (from-to)	11-14
Number of pages	4
Journal	Chemical Research in Chinese Universities
Volume	27
Issue number	1
Publication status	Published - 2011

Keywords

1-Alkyl-3-methylimidazolium
Ionic liquid
Photocatalytic activity
Polyoxometalate

Cite this

Dong, T., Chen, F. W., Cao, M. H., & Hu, C. W. (2011). Low melting point and high stability polyoxomolybdate-based ionic liquids as photocatalysts. Chemical Research in Chinese Universities, 27(1), 11-14.

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title = "Low melting point and high stability polyoxomolybdate-based ionic liquids as photocatalysts",

abstract = "The polyoxometalate-imidazole ionic liquids(POM-ILs) with low melting points at 94.5 and 95.5 °C, [Cnmim]4[Mo8O26](Cnmim=1-alkyl-3-methylimidazolium, n=12,14), have been successfully synthesized and characterized by DSC, single-crystal X-ray diffraction and TGA, etc. The two POM-ILs have relatively high stability with decomposing temperature up to about 347 and 344 °C, respectively. Further photocatalytic performance was measured via the degradation of rhodamine B(RB) in aqueous solution. The experiments show that the conversion reached to 90% after 90 min under UV-light and the degradation efficiency depended on pH value, different dosages and so on. In addition, the catalysts can be recycled for several times without significant loss of activity.",

keywords = "1-Alkyl-3-methylimidazolium, Ionic liquid, Photocatalytic activity, Polyoxometalate",

author = "Tao Dong and Chen, {Fa Wang} and Cao, {Min Hua} and Hu, {Chang Wen}",

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T1 - Low melting point and high stability polyoxomolybdate-based ionic liquids as photocatalysts

AU - Dong, Tao

AU - Chen, Fa Wang

AU - Cao, Min Hua

AU - Hu, Chang Wen

PY - 2011

Y1 - 2011

N2 - The polyoxometalate-imidazole ionic liquids(POM-ILs) with low melting points at 94.5 and 95.5 °C, [Cnmim]4[Mo8O26](Cnmim=1-alkyl-3-methylimidazolium, n=12,14), have been successfully synthesized and characterized by DSC, single-crystal X-ray diffraction and TGA, etc. The two POM-ILs have relatively high stability with decomposing temperature up to about 347 and 344 °C, respectively. Further photocatalytic performance was measured via the degradation of rhodamine B(RB) in aqueous solution. The experiments show that the conversion reached to 90% after 90 min under UV-light and the degradation efficiency depended on pH value, different dosages and so on. In addition, the catalysts can be recycled for several times without significant loss of activity.

AB - The polyoxometalate-imidazole ionic liquids(POM-ILs) with low melting points at 94.5 and 95.5 °C, [Cnmim]4[Mo8O26](Cnmim=1-alkyl-3-methylimidazolium, n=12,14), have been successfully synthesized and characterized by DSC, single-crystal X-ray diffraction and TGA, etc. The two POM-ILs have relatively high stability with decomposing temperature up to about 347 and 344 °C, respectively. Further photocatalytic performance was measured via the degradation of rhodamine B(RB) in aqueous solution. The experiments show that the conversion reached to 90% after 90 min under UV-light and the degradation efficiency depended on pH value, different dosages and so on. In addition, the catalysts can be recycled for several times without significant loss of activity.

KW - 1-Alkyl-3-methylimidazolium

KW - Ionic liquid

KW - Photocatalytic activity

KW - Polyoxometalate

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IS - 1

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Low melting point and high stability polyoxomolybdate-based ionic liquids as photocatalysts

Abstract

Keywords

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