以吡啶、丙磺酸内酯和钨磷酸为原料,合成了离子液体型多金属氧酸盐(POM-IL)化合物[PyPS]nH3-nPW12O40·xH2O(n=1,2,3),用FT-IR、UV-Vis、1H NMR和元素分析等对其进行了表征.结果显示,POM-IL化合物仍保持相应钨磷酸的Keggin结构,并存在吡啶丙磺酸的特征谱带,熔点均高于130℃,且随有机阳离子含量增加,熔点降低.在紫外光下,n为1和2的POM-IL对水溶液中甲基橙的光催化降解活性与钨磷酸相似；在可见光下,POM-IL对水溶液中靛红的光催化降解活性相近,且均远高于钨磷酸.
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