Keggin型杂多酸SiMo12-x Vx（x＝1，3，5）光催化甲基橙脱色性能研究

摘要

采用乙醚萃取法合成三种硅钼钒杂多酸SiMo12-x Vx（x＝1，3，5），利用红外光谱（FT-IR）、紫外可见光谱（UV-Vis）、循环伏安法（CVs）对化合物的结构进行表征。分别对三种硅钼钒杂多酸SiMo12-x Vx（x＝1，3，5）脱色甲基橙的催化活性进行研究，三种催化剂的催化活性为SiMo7 V5＞SiMo9 V3＞SiMo11 V1；并考察了SiMo7 V5在不同pH及不同浓度甲基橙的光脱色效果的影响。%Three kinds of silicon heteropolymolybdovanadates SiMo12-xVx(x=1,3,5)were synthesized by the ether extraction meth-od. And the three componds were structurely characterized by fourier transform infrared spectroscopy(FT-IR),ultraviolet visible spectroscopy(UV-Vis),cyclic voltammetry(CVs).The photocatalytic activity in degradation of methyl orange were studied based on the three silicon heteropolymolybdovanadates SiMo12-xVx(x=1,3,5),respectively and the catalytic activity SiMo7V5>SiMo9V3>Si-Mo11 V1.At the meantime,we reserached the influence of different pH and different concentrations of methyl orange for the photob-leaching effect.