摘要
提出了一种新型阴离子印迹荧光传感磁性微球,他不仅对重金属Cr(Ⅵ)阴离子具有特异印迹吸附性能,还能通过印迹前后荧光的变化对Cr(Ⅵ)进行传感检测。该微球以磁性Fe_3O_4为核,SiO_2进行包裹改性,选择N-乙烯基咔唑(NVC)为荧光单体,N-异丙基丙烯酰胺(NIPAM)为聚合单体,二乙烯基苯(DVB)为交联剂,Cr(Ⅵ)阴离子为模板,通过蒸馏沉淀聚合得到。结果表明,该微球对Cr(Ⅵ)具有良好的印迹与传感性能,在水溶液中对Cr(Ⅵ)的最大吸附量可达90.84 mg/g,最大吸附效率为85.31%。
A novel anion-imprinted and fluorescent sensing microspheres（ IFMMs） is presented,which not only could imprint the Cr（ Ⅵ） anions,but also could detect the Cr（ Ⅵ） by changing fluorescence before and after imprinting.The IFMMs is prepared by precipitation polymerization,using SiO2 coated Fe3O4 nanoparticles（ Fe3O4/ SiO2） as the seeds,N-vinyl carbazole（ NVC） as fluorescent monomer,N-isopropylacrylamide（ NIPAM） as polymerizable monomers,divinylbenzene（ DVB） as cross-linker and Cr（ Ⅵ） anion as the template. The result shows that the microspheres have good imprinting and sensing properties for Cr（ Ⅵ）. The maximum adsorption capacity of Cr（ Ⅵ） in aqueous solution is90. 84 mg / g and the maximum adsorption efficiency is 85. 31%.
出处
《现代化工》
CAS
CSCD
北大核心
2016年第12期51-55,共5页
Modern Chemical Industry
