Fluorescence and electrochemical detection of pollutants utilizing a Keggin-type Zn(II)-polyoxometalate

Fluorescence and electrochemical detection of pollutants utilizing a Keggin-type Zn(II)-polyoxometalate Full article

Journal

Polyhedron
ISSN: 1873-3719 , E-ISSN: 0277-5387

Output data

Year: 2025, Volume: 267, Article number : 117360, Pages count : 8 DOI: 10.1016/j.poly.2024.117360

Tags

Fluorescence detection Electrochemistry Water pollution

Authors

Chen Wei ¹ , Li Xiangyang ¹ , Yao Wei ¹ , Fedin Vladimir P. ² , Gao Enjun ¹

Affiliations

1	China-Russian Institute of Engineering Materials Chemistry, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
2	Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia

The escalating development of the national industry has led to a growing apprehension regarding water pollution. Therefore, there is an urgent need to develop a rapid, convenient, and highly sensitive method for detecting water pollutants. In this study, we successfully prepared a novel Keggin-type polyacid hybrid material with zerodimensional structure [Zn2(C10H6NO2)2(C10H7NO2)4][ZnCl(C10H7NO2)3]2[HPMo12O40]2 (1) through steam heating using 2,3-quinoline dicarboxylic acid, phosphomolybdic acid and Zn(NO3)2 along as precursors. However, it was observed that 2,3-quinoline dicarboxylic acid (H2L = C11H7NO4) loses a carboxyl group from a new quinoline-3-carboxylic acid ligand (HL1 = C10H7NO2) during the synthesis process of 1. Our investigations have revealed two distinct forms for Zn2+, form A involves coordination with one Zn ion, three ligands and one chloride ion while form B forms a binuclear cluster [Zn2(C10H6NO2)2(C10H7NO2)4]2+ by coordinating with two L1 1 and four HL1 ligands. These structures are further extended into 3D supramolecular architectures via π-π packing between one-dimensional chains formed by connecting the Keggin-type polyoxometalates through multiple hydrogen bonds. Additionally, we explore the fluorescence and electrochemical properties of compound 1. These results demonstrate its exceptional selectivity and high sensitivity towards Fe3+, HPO42 and CrO4 2 as a fluorescence probe and excellent electrochemical activity towards NaNO2. Furthermore, the reaction mechanism was thoroughly examined.

Chen W. , Li X. , Yao W. , Fedin V.P. , Gao E.
Fluorescence and electrochemical detection of pollutants utilizing a Keggin-type Zn(II)-polyoxometalate
Polyhedron. 2025. V.267. 117360 :1-8. DOI: 10.1016/j.poly.2024.117360 WOS OpenAlex

Submitted:	Aug 26, 2024
Accepted:	Dec 5, 2024
Published online:	Dec 7, 2024
Published print:	Feb 1, 2025

Web of science:	WOS:001385559300001
OpenAlex:	W4405130713

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