Spectroscopy and Spectral Analysis, Volume. 38, Issue 8, 2650(2018)
Quercetin-Functionalized Core-Shell Ag@SiO2 Nanoparticles for Detection of Copper Ions
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.
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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. Quercetin-Functionalized Core-Shell Ag@SiO2 Nanoparticles for Detection of Copper Ions[J]. Spectroscopy and Spectral Analysis, 2018, 38(8): 2650
Received: Jun. 15, 2017
Accepted: --
Published Online: Aug. 26, 2018
The Author Email: Wei-na JIANG (121702969@qq.com)