Sulfonic acid functionalized zirconium-based metal-organic framework for the selective detection of copper(ii) ions

被引：15

作者：

Rana, Abhijeet ^{[1
]}

Nandi, Soutick ^{[1
,2
]}

Biswas, Shyam ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Chem, Gauhati 781039, Assam, India

[2] Ghani Khan Choudhury Inst Engn & Technol, Dept Appl Sci, Malda 732141, W Bengal, India

来源：

NEW JOURNAL OF CHEMISTRY | 2022年 / 46卷 / 21期

关键词：

DISEASE; COMPLEX; SENSOR;

D O I：

10.1039/d2nj01068b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A zirconium-MOF with a sulphonic acid functionalized biphenyldicarboxylic acid linker was synthesized by a solvothermal process. The material was characterized by powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), Brunauer-Emmett-Teller (BET) analysis, infrared (IR) spectroscopy, energy-dispersive X-ray spectroscopy (EDX), and FESEM analysis. The fluorescence sensing experiment towards the detection of Cu2+ was carried out. The detection time for Cu2+ was only 15 s with a very low limit of detection, which is 0.22 mu M. The Stern-Volmer constant was found to be 5.5 x 10(5) M-1. For easy handling and real field application purposes, we developed a paper-strip based sensing device. The systematic study of the mechanism by EDX, PXRD, TRPL, and UV-Vis spectroscopy revealed that the quenching of fluorescence intensity by copper(ii) was due to the fluorescence resonance energy transfer.

引用

页码：10477 / 10483

页数：7

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