六元瓜环修饰的花团状铜的催化活性

Catalytic Activity of Cucurbit[6]uril Modified Copper Flower Clusters

采用水热法,将六元瓜环(Q[6])分散的五水硫酸铜用抗坏血酸还原后获得了六元瓜环修饰的超微花团状铜(Q[6]-Cu花团).利用X射线粉末衍射(XRD)和扫描电子显微镜(SEM)对产物进行了结构和形貌表征,通过催化氧化染料罗丹明B(Rh B)、结晶紫(CV)、茜素红(AR)和次甲基蓝(MB)考察了产物的催化性能.结果表明,Q[6]-Cu花团直径约为2.0μm.在Q[6]-Cu/H_2O_2体系中,0.08 g/L的Q[6]-Cu在300 min内对染料脱色效率均超过87%.

Cucurbit[6]uril modified copper flower clusters（Q[6]-Cu） were prepared by hydrothermal method with cucurbit[6]uril dispersed copper sulphate pentahydrate being reduced by ascorbic acid.X-Ray diffraction（XRD） and scanning electron microscopy（SEM） were used to characterize the structure and morphology of the products and the catalytic oxidation property of the product was investigated by catalytic oxidation of rhodamine B,crystal violet,alizarin red and methylene blue.The results show that the copper had special flower clusters morphology when the molar ratio of Q[6] to copper sulphate pentahydrate was 1 ∶ 25,and the average diameter of copper flower clusters was 2 μm.In the presence of Q[6]-Cu/H_2O_2,when the amount of copper flower clusters was 0.08 g/L and the reaction time was 300 min,the dyes decoloration efficiency was higher than 87%.