硅胶表面铜离子印迹聚合物的制备和性能研究  

Preparation of imprinted polymer with Cu^(2+) ions on silica surface and its characteristics

作　　者：李艳[1] 康永锋[1,2] 吴文惠[1,2] 段吴平[1] 康俊霞[1] 谢晶[1] 

机构地区：[1]上海海洋大学食品学院,上海201306 [2]上海海洋大学海洋科学研究院,上海201306

出　　处：《化学研究与应用》2012年第6期873-878,共6页Chemical Research and Application

基　　金：国家海洋局海洋可再生能源专项资金项目(SHME2011SW02)资助;上海市教育委员会重点学科建设项目(J50704)资助

摘　　要：以Cu2+为模板,1,4-二羟基蒽醌为单体,硅胶为载体,γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(KH-570)为偶联剂,利用表面离子印迹技术制备了Cu2+印迹聚合物。采用紫外光谱法、傅里叶变换红外光谱法(FT-IR)、扫描电镜对Cu2+印迹聚合物进行结构和表面形貌表征,并用原子吸收光谱法考察了吸附时间、吸附酸度、吸附温度、吸附浓度等对聚合物吸附性能的影响,研究了印迹聚合物在混合溶液中对Cu2+的选择性,将该聚合物重复利用6次,吸附量达到第一次的82%,并将该印迹聚合物应用到河水和自来水中,能够有效地测出水中铜离子的浓度,回收率分别为95.5%和107.2%。Cu^2＋-imprinted polymer particles were prepared by surface ion imprinting technique with Cu^2＋ ion as the template, 1-hy- droxy-4-（prop-2＇-enyloxy）-9,10-anthraquinone（AQ） as the functional monomer, silica gel as the carrier, and KH-570 as the cross- linking agent. The imprinted polymer particles were characterized by UV-spectra, FT-IR and scanning electron microscopy. The effect of adsorption time, adsorption acidity, adsorption temperature and adsorption concentration on adsorption capacity was investi- gated by atomic absorption spectrometry. Seleotivity for Cu^2＋ions of the prepared polymer was also studied in mixed aqueous solu- tion. Reuse the prepared ion imprinted polymer six times, the adsorption capacity in the last time is 82% that of the first time, the ion imprinted polymer were applied to the determination of Cu^2＋ ions in river and tap water samples, the concentration of Cu^2＋ ions in wa- ter samples were determined and the recoveries of Cu^2＋ions in river and tap water samples were 95.5% and 107.2% ,respoctively.

关 键 词：硅胶 表面印迹 铜离子 吸附 应用 

分 类 号：O633.5[理学—高分子化学]