Selective and sensitive Detection of Cu2+ in aqueous solution based on cation exchange by Metal-Organic framework TMU-16 as a fluorescent sensor

被引：8

作者：

Saedi, Zahra ^{[1
]}

Roushani, Mahmoud ^{[1
]}

Khaleghian-Moghadam, Roghayeh ^{[2
]}

Darabi, Amin ^{[1
]}

机构：

[1] Ilam Univ, Fac Sci, Dept Chem, Ilam, Iran

[2] Esfarayen Univ Technol, Cent Res Lab, Esfarayen, Iran

来源：

JOURNAL OF LUMINESCENCE | 2022年 / 251卷

关键词：

Fluorescent; Sensor; Metal organic framework; Cation exchange; TMU-16; HEAVY-METALS; LUMINESCENT SENSOR; IONS; SPECTROMETRY; FE3+; AL3+; MOF; CRYSTAL; PROBE; CR3+;

D O I：

10.1016/j.jlumin.2022.119165

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recently, metal-organic frameworks (MOFs) have been considered as fluorescence sensors. Herein, we reported the fluorescent TMU-16 for detection of Cu2+ in aqueous solution with high sensitivity and selectivity. Fluorescence quenching was controlled through the cation exchange mechanism between Cu2+ and Zn2+ ions in TMU-16. The strong-fluorescent TMU-16 was converted to a weak-fluorescent TMU-16 (Zn, Cu) and caused highly selective and sensitive detection of Cu2+ in aqueous medium with a 25-400 ppm linear range and 3.96 ppm limit of detection. No interferences from 200 ppm cation solutions of Hg2+, Ag+, Ni2+, Pb2+, Cr3+, Co2+, Cd2+, and Fe3+ were observed for the detection of 25 ppm Cu2+. The possible mechanism for the quenching effect of Cu2+ on the fluorescence sensing of TMU-16 was elucidated by inductively coupled-plasma spectrometry (ICP), X-ray diffraction spectrometry (XRD), Fourier transform-infrared spectrometry (FT-IR), Energy-dispersive X-ray spectroscopy (EDX) and elemental mapping techniques.

引用

页数：8

共 58 条

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