基于功能化金纳米粒子灵敏检测水溶液中的镉离子  

Selection Determination of Cd^(2+) in Aqueous Solution Based on Functionalized Gold Nanoparticle

作　　者：张付强[1] 刘丽[1] 赵一曼[1] 

机构地区：[1]安徽师范大学化学与材料科学学院,安徽芜湖241000

出　　处：《广州化工》2013年第23期53-55,90,共4页GuangZhou Chemical Industry

基　　金：安徽师范大学人才培育基金项目(No.2012rcpy045)

摘　　要：MPA通过Au-S键自组装金纳米粒子表面,GSH中的氨基与MPA中的羧基形成羧铵盐吸附到金纳米表面,形成了表面带有大量官能团的Au-MAP-GSH纳米粒子。由于Cd2+能与GSH中的羧基、氨基、巯基可以共同形成稳定的络合物,金纳米粒子能以Cd2+离子为桥梁发生大量聚集,引起金纳米表面等离子吸收和溶液颜色发生变化,从而实现对Cd2+进行裸眼检测。Due to Au - S interaction MPA was assembled to the surface of Au NPs. The carboxyl terminus of Au - MPA then were allowed to concatenate of GSH via forming carboxylic acid ammonium salt to give the Au - MPA - GSH. A cadmium ion could form complex with GHS via the free sulfhydryl group, amino - group and the carboxyl groups, lead to the functionalized Au NPs to aggregate and arouse colour change of Au NPs solution. Based on this phenomenon, Cd2＋ ion was monitored by a colorimetric response of the functionalized Au NPs.

关 键 词：AU纳米粒子 Cd2+ 灵敏 

分 类 号：O661.1[理学—分析化学]