摘要
以六元瓜环(Q[6])为修饰剂,抗坏血酸为还原剂,采用化学还原法制备了Q[6]修饰的银。用X射线粉末衍射、扫描电镜对产物进行结构和形貌表征,并研究了银催化氧化染料次甲基蓝和罗丹明B的性能。结果表明,修饰剂Q[6]用量为0.4 mmol时,获得的银呈直径为2μm花团状结构,并且对罗丹明B和次甲基蓝具有较好的催化氧化效果,0.02 g/L花团状银在300 min内对罗丹明B和次甲基蓝的脱色率超过74.0%和78.0%。
Cucurbit[6]uril modified silver was prepared by chemical reduction method using cucurbit[6] uril as the modifier and ascorbic acid as a reducing agent. The structure and morphology of the product were characterized by X-ray diffraction and scanning electron microscope. And its catalytic performance in the oxidation of methylene blue and rhodamine B were studied. The results showed that the silver following the modification had special of clocklike morphology with a diameter of 2 μm when 0.4 mmol cucurbit[6]uril was used. Catalyzed by 0.02 g/L clocklike silver, more than 74.0% of rhodamine-B and 78.0%of methylene blue could be oxidized in 300 min with H2O2.
出处
《贵金属》
CAS
CSCD
北大核心
2016年第2期26-31,共6页
Precious Metals
基金
国家自然科学基金项目(21272045)
贵州大学SRT基金(No.(2015)159)
关键词
材料化学
六元瓜环
花团状银
催化氧化
染料
material chemistry
cucurbit[6]uril
clocklike silver
catalytic oxidation
dyes