您的位置：首页 > 论文页面
以纳米二氧化钛为载体的Ag(I)表面印迹聚合物的制备及应用
发表时间：2016-04-15 浏览量：1953 下载量：779
| 全部作者： | 刘彦雄，刘笑岚，谭文祥，刘鹏，曹秋娥 |
| 作者单位： | 云南大学化学科学与工程学院 |
| 摘 要： | 基于软硬酸碱理论，选择了主要以N为配位原子的烯丙基脲（NAU）为功能单体，在系统优化了功能单体、纳米二氧化钛和交联剂用量的基础上，采用0.1 mmol Ag(I)为模板，50 mg纳米二氧化钛为载体，0.3 mmol烯丙基脲为功能单体，3 mmol乙二醇二甲基丙烯酸酯（EGDMA）为交联剂，以表面印迹技术制备了一种Ag(I)离子印迹聚合物（ion-imprinted polymer，IIP）。该印迹聚合物在10 mL含有50 mg/L的Ag(I)水溶液中对Ag(I)的平衡吸附量为34.16 mg/g，印迹因子为1.94，用其制备的固相萃取小柱在优化的萃取条件下，对Ag(I)的萃取率达到了78%，而对Ir(IV)、Pd(II)、Ru(III)、Rh(III)、Au(III)和Cu(II)的萃取率均在15%以下。 |
| 关 键 词： | 分析化学；Ag(I)；离子印迹聚合物；表面印迹技术；纳米二氧化钛；固相萃取 |
| Title： | Preparation of Ag(I) surface imprinted polymer with nano-titanium dioxide as supporter and its applications |
| Author： | LIU Yanxiong, LIU Xiaolan, TAN Wenxiang, LIU Peng, CAO Qiue |
| Organization： | School of Chemical Science and Technology, Yunnan University |
| Abstract： | Based on the soft and hard acid and alkali theory, N-allylthiourea (NAU), which can use N as coordination atom, was selected as functional monomer for the preparation of Ag(I) ion-imprinted polymer (IIP). After the amounts of functional monomer, cross-linking agent and nano-titanium dioxide were optimized, a Ag(I) ion-imprinted polymer was obtained by surface imprinting technique with 0.1 mmol Ag(I) as template, 0.3 mmol NAU as functional monomer, 50 mg nano-titanium dioxide as supporter, and 3 mmol ethylene glycol dimethacrylate (EGDMA) as crosslinker. The adsorption capacity and imprinting factor of this IIP in 10 mL of aqueous solutions containing 50 mg/L Ag(I) were 34.16 mg/g and 1.94, respectively. The obtained IIP could be used as adsorbent for solid phase extraction of Ag(I). After the extraction conditions was optimized, the solid phase extraction based Ag(I) ion-imprinted polymers exhibited good selectivity to Ag(I) over the other metals such as Ir(IV)、Pd(II)、Ru(III)、Rh(III)、Au(III) and Cu(II). The extraction percentage for Ag(I) could reach to above 78% and those for the other metals were below 15%. |
| Key words： | analytical chemistry; Ag(I); ion-imprinted polymer; surface imprinting technique; nano-titanium dioxide; solid phase extraction |
| 发表期数： | 2016年4月第7期 |
| 引用格式： | 刘彦雄，刘笑岚，谭文祥，等. 以纳米二氧化钛为载体的Ag(I)表面印迹聚合物的制备及应用[J]. 中国科技论文在线精品论文，2016，9（7）：739-745. |
1
评论数 0请您登录
暂无评论
下载全文
多维论文