论文部分内容阅读
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。
The ionic liquid polyoxometalate (POM-IL) compound [PyPS] nH3-nPW12O40 · xH2O (n = 1,2,3) was synthesized from pyridine, propane sultone and tungstophosphoric acid -IR, UV-Vis, 1H NMR and elemental analysis. The results showed that the POM-IL compound retained the Keggin structure of tungstophosphoric acid and had the characteristic band of pyridinepropanesulfonic acid with the melting point higher than 130 ° C. The melting point of POM-IL decreased with the increase of organic cation. Under ultraviolet light, the photocatalytic degradation of methyl orange by aqueous POM-IL was similar to that of tungstophosphoric acid. Under visible light, the photocatalytic activity of POM-IL was similar to that of aqueous isophthalocyanine Are much higher than tungstophosphoric acid.