A water-stable metal-organic framework Zn-MOF as a chemical sensor for efficient detection of Cr(VI) (Cr2O72-and CrO42-) anions in water

被引：12
作者：
Yang, Songlin [1 ,2 ,4 ]
Chen, Shiyu [1 ,2 ,4 ]
Li, Kaisu [1 ,2 ,4 ]
Luo, Qiongli [1 ,2 ,4 ]
Zhang, Ying [1 ,2 ]
Wang, Lei [1 ,2 ,3 ]
Wu, Shuangyan [1 ,2 ]
Zhu, Mingchang [1 ,2 ,4 ]
机构：
[1] Shenyang Univ Chem Technol, Key Lab Inorgan Mol Based Chem Liaoning Prov, Shenyang 110142, Liaoning, Peoples R China
[2] Shenyang Univ Chem Technol, Lab Coordinat Chem, Shenyang 110142, Liaoning, Peoples R China
[3] Shenyang Univ Chem Technol, Ctr Phys & Chem Test, Shenyang 110142, Liaoning, Peoples R China
[4] Shenyang Univ Chem Technol, Coll Sci, Shenyang 110142, Peoples R China
来源：
INORGANICA CHIMICA ACTA | 2023年 / 558卷
关键词：
Luminescence sensor; Metal-organic framework; Energy competitive absorption; LUMINESCENT; IONS; COORDINATION; ADSORPTION; POLLUTANTS; MOLECULE; SHIFT; FE3+;
D O I：
10.1016/j.ica.2023.121764
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The luminescent three-dimensional Zn(II) metal-organic framework (Zn-MOF) was successfully synthesized via a hydrothermal method. The structure of the compound is denoted as [Zn3(mu 3-OH)(L)& sdot;(H2O)]n, where H5L rep-resents 3,5-bis(3,5-dicarboxyphenoxy)benzoic acid. Remarkably, this framework exhibits excellent stability in water and pH (3-13) conditions. Intriguingly, the compound shows high selectivity, sensitivity, and low detection limits (4.10 mu M for Cr2O72-and 6.63 mu M for CrO42-) in aqueous solution. Furthermore, the material proves to be easily regenerable. Additionally, the competition between analyte absorption and the excitation/ emission of Zn-MOF elucidates the fluorescence sensing mechanism of Cr2O72-/CrO42-ions. These findings un-equivocally establish Zn-MOF as a highly selective and recyclable fluorescence sensing material for the quantitative detection of Cr(VI) ions in aqueous solutions.
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页数：7
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