Highly sensitive detection of Hg2+ using ruthenium complex-based probe in water

被引：1
作者：
Wu, Yuhao [1 ,2 ]
Du, Kang [1 ,2 ]
Xu, Ce [1 ,2 ]
Li, Xianghong [1 ,2 ]
Tang, Dingguo [1 ,2 ]
机构：
[1] South Cent Univ Nationalities, Minist Educ, Key Lab Catalysis & Energy Mat Chem, Wuhan 430074, Peoples R China
[2] South Cent Univ Nationalities, Hubei Key Lab Catalysis & Mat Sci, Wuhan 430074, Peoples R China
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2021年 / 935卷
基金：
美国国家科学基金会;
关键词：
Cyclometalated ruthenium complex; Mercury ions; Mesoporous silica nanoparticles; IRIDIUM(III) COMPLEX; SELECTIVE DETECTION; MERCURY; FLUORESCENT; DESIGN; SENSOR; IONS;
D O I：
10.1016/j.jorganchem.2021.121690
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A new ruthenium complex using 2-(2-thienyl)pyridine as cyclometalating ligand and 2,2'-bipyridine-5,5'dicarboxylic acid as anchoring ligands was successfully synthesized and used as an Hg2+ colorimetric probe. Upon adding Hg2+ into the aqueous solution of the complex, a significant absorption spectral change with a blue shift of 142 nm can be observed accompanied by an obvious color change. The detection limit of Hg2+ was calculated to be as low as 4.7 x 10(-8) M in neutral aqueous medium by using UV-Vis absorption technology. Then, it was loaded onto mesoporous silica nanoparticles, which was characterized by TEM, XPS and TG. The new composite material Ru-COOH@NH2-MSNs displayed abilities to enrich and separate Hg2+ in water, which demonstrates a potential application in environmental system. (C) 2021 Elsevier B.V. All rights reserved.
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页数：8
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