槲皮素包裹修饰硅包银纳米颗粒作为荧光传感器对铜离子的识别作用（英文）  

Quercetin-Functionalized Core-Shell Ag@SiO_2 Nanoparticles for Detection of Copper Ions

作　　者：姜维娜[1,2] 杨世龙 卢雯[4] 徐莉 唐颖[2,3,5] 薛华玉 高步红[3] 杜丽婷 孙海军[3] 马猛涛 徐海军 曹福亮 JIANG Wei-na;YANG Shi-long;LU Wen;XU Li;TANG Ying;XUE Hua-yu;GAO Bu-hong;DU Li-ting;SUN Hai-jun;MA Meng-tao;XU Hai-jun;CAO Fu-liang(College of Chemical Engineering,Nanjing Forestry University，Nanjing 210037,China;Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing 210037,China;Advanced Analysis and Testing Center,Nanjing Forestry University,Nanjing 210037,China;College of Science,Nanjing Forestry University,Nanjing 210037,China;College of Forestry,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学化学工程学院,江苏南京210037 [2]中国南方可持续林业合作创新中心,江苏南京210037 [3]南京林业大学现代分析测试中心,江苏南京210037 [4]南京林业大学理学院,江苏南京210037 [5]南京林业大学森林学院,江苏南京210037

出　　处：《光谱学与光谱分析》2018年第8期2650-2656,共7页Spectroscopy and Spectral Analysis

基　　金：Sate Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University), Nation al Natural Science Foundation of China (21372117), Fok Ying Tung Education Foundation (141030), Research Fund for the Doctoral Program

摘　　要：制备了一种基于天然产物槲皮素接枝硅包银核壳结构的纳米荧光传感器(Ag@SiO_2@Qc),对铜离子具有好的选择性和灵敏性。Ag@SiO_2@Qc与Cu^(2+)离子结合后,荧光发射强度发生猝灭,并且可通过荧光滴定光谱得到了荧光滴定曲线:y=-32.864x+587.59(R^2=0.998),其线性范围分别为:3×10^(-7)~4.8×10^(-6 )mol·L^(-1),最低检测限为1.0×10^(-7 )mol·L^(-1)。并且将Ag@SiO_2@Qc应用于环境中水样的检测结果的准确度好,精密度高,而且更加环保、方便、快捷,具有很大发展潜力与应用价值。A novel fluorescent sensor based on natural quercetin and core-shell Ag@SiO2 nanoparticles for highly sensitive and selective detection of copper ions has been studied. The Ag@SiO2@Quercetin fluorescent sensor after binding to Cu2＋ ions showed a quenching of fluorescence emission intensity. The sensor can be applied to the quantification of Cu2＋ ions with a linear range of 3.0×10-7～4.8×10-6 mol·L-1 and a detection limit of 1.0×10-7 mol·L-1. The sensor showed high selectivity toward Cu2＋. As a result, the proposed fluorescent nanosensor was successfully applied for determination of Cu2＋ in water samples with good recovery.

关 键 词：槲皮素 天然产物 硅包银核壳纳米粒子 荧光传感器 铜离子 

分 类 号：TQ59[化学工程—精细化工]