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Citation: LI Yuanyuan, YANG Chun. Preparation of Ionic Liquid-like Polyoxometalates [PyPS]_nH_3-nPW₁₂O₄₀·xH₂O and Their Photocatalytic Performances to Decoloration of Dyes in Aqueous Solution[J]. Chinese Journal of Applied Chemistry, ;2013, 30(3): 310-315. doi: 10.3724/SP.J.1095.2013.20152 shu

Preparation of Ionic Liquid-like Polyoxometalates [PyPS]_nH_3-nPW₁₂O₄₀·xH₂O and Their Photocatalytic Performances to Decoloration of Dyes in Aqueous Solution

LI Yuanyuan ,
YANG Chun

Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China

Received Date: 13 April 2012
Revised Date: 2 July 2012

Ionic liquid-like polyoxometalates (POM-IL),[PyPS]_nH_3-nPW₁₂O₄₀·xH₂O(n=1,2,3),were synthesized by using pyridine,1,3-propanesultone and tungstophosphoric acid as raw materials. The compounds were characterized by means of FT-IR,UV-Vis,¹H NMR and elementary analyses. The results showed that Keggin structure of POM was kept and there were character bands of pyridyl propylsulfonic acid in the POM-IL salts. All prepared compounds possess melting-points above 130℃ and the melting-points decreased with the increase of the organic component. Furthermore,the photocatalytic performances of these POM-IL samples for the degradation of aqueous dyes were investigated.Under UV irradiation,the samples with n=1 and 2 showed similar photocatalytic activities to that of tungstophosphoric acid for the degradation of methyl orange. Under visible light,all POM-IL salts exhibit the same photocatlytic activities which are superior to tungstophosphoric acid for the degradation of isatin.Therefore,all these POM-IL salts might be promising photocatalysts for the degradation of some dyes under visible light.
- ionic liquid,
- polyoxometalates,
- synthesis and characterization,
- photocatalysis
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Preparation of Ionic Liquid-like Polyoxometalates [PyPS]nH3-nPW12O40·xH2O and Their Photocatalytic Performances to Decoloration of Dyes in Aqueous Solution

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通讯作者: 陈斌, bchen63@163.com

Preparation of Ionic Liquid-like Polyoxometalates [PyPS]_nH_3-nPW₁₂O₄₀·xH₂O and Their Photocatalytic Performances to Decoloration of Dyes in Aqueous Solution