花团状纳米铜的制备和催化性能  

Synthetic and catalytic properties of clocklike nano-copper

作　　者：高丽[1] 罗娟[1] 赵安婷[1] 胡宗超[1] 

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025

出　　处：《化学研究》2015年第3期287-291,共5页Chemical Research

基　　金：国家自然科学基金(21272045)

摘　　要：采用液相化学还原法,以六元瓜环(Q[6])为修饰剂,CuSO4·5H2O为铜源,抗坏血酸为还原剂制备纳米铜.采用X射线粉末衍射、扫描电镜及紫外-可见吸收光谱对产物进行结构和形貌表征.结果表明,产物纳米铜呈特殊的花团状结构,花团直径约为2.0μm.花团状纳米铜对染料罗丹明B和次甲基蓝的催化结果显示,在40℃和H2O2辅助下,60mg/L花团状纳米铜在120min内对罗丹明B和次甲基蓝的降解率大于83%.Clocklike nano-copper were prepared by chemical reduction method in aqueous solu- tion with cucurbit[6]uril as modifier, CuSO4 · 5H2O as copper source and ascorbic acid as re- ducing agent. The structure, morphology and catalytic performance of nano-copper were char- acterized by X-ray diffraction （XRD）, scanning electron microscope （SEM） and UV-visible ab- sorption spectroscopy. The results show that the nano-copper is in a special structure of clock- like,whose diameter is about 2.0 μm. Under the presence of H2O2 and at 40 ℃, 60 mg/L clocklike nano-copper can catalyze more than 83% of rhodamine-B and methylene blue in 120 min.

关 键 词：瓜环 花团状 铜纳米粒子 催化 罗丹明B 次甲基蓝 

分 类 号：O614.121[理学—无机化学]