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| 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 | |
| 作者单位： | 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 |
| 基金项目： | Sate Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University), National Natural Science Foundation of China (21372117), Fok Ying Tung Education Foundation (141030), Research Fund for the Doctoral Program of Higher Education of China (20133204120009), and the priority academic program development of Jiangsu higher education institutions |
| 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@SiO2@Qc)，对铜离子具有好的选择性和灵敏性。Ag@SiO2@Qc与Cu2+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(R2=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@SiO2@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。 |
| 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 |
| 收稿时间： | 2017-06-15 |
Quercetin-Functionalized Core-Shell Ag@SiO2 Nanoparticles for Detection of Copper Ions |
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| Authors: | 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 |
| Institution: | 1. College of Chemical Engineering, Nanjing Forestry University，Nanjing 210037, China 2. Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China 3. Advanced Analysis and Testing Center, Nanjing Forestry University, Nanjing 210037, China 4. College of Science, Nanjing Forestry University, Nanjing 210037, China 5. College of Forestry, Nanjing Forestry University, Nanjing 210037, China |
| Abstract: | 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. |
| Keywords: | Quercetin Natural Ag@SiO2 core-shell nanoparticles Fluorescence sensor Copper ion |
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