Quercetin-Functionalized Core-Shell Ag@SiO2 Nanoparticles for Detection of Copper Ions

被引：4
|
作者：
Jiang Wei-na [1 ,2 ]
Yang Shi-long [1 ,3 ]
Lu Wen [4 ]
Xu Li [2 ,3 ,4 ]
Tang Ying [2 ,3 ,5 ]
Xue Hua-yu [1 ]
Gao Bu-hong [3 ]
Du Li-ting [3 ]
Sun Hai-jun [3 ]
Ma Meng-tao [4 ]
Xu Hai-jun [1 ]
Cao Fu-liang [2 ,5 ]
机构：
[1] Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Jiangsu, Peoples R China
[2] Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Jiangsu, Peoples R China
[3] Nanjing Forestry Univ, Adv Anal & Testing Ctr, Nanjing 210037, Jiangsu, Peoples R China
[4] Nanjing Forestry Univ, Coll Sci, Nanjing 210037, Jiangsu, Peoples R China
[5] Nanjing Forestry Univ, Coll Forestry, Nanjing 210037, Jiangsu, Peoples R China
来源：
SPECTROSCOPY AND SPECTRAL ANALYSIS | 2018年 / 38卷 / 08期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
Quercetin; Natural; Ag@SiO2 core-shell nanoparticles; Fluorescence sensor; Copper ion; METAL-ENHANCED FLUORESCENCE; PROBE; CHEMOSENSOR; SENSOR; CU2+;
D O I：
10.3964/j.issn.1000-0593(2018)08-2650-07
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
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 X10(-7)similar to 4. 8 X 10(-6) mol . L-1 and a detection limit of 1. 0 X 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.
引用
收藏
页码：2650 / 2656
页数：7
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