Two new d10-based transition metal coordination polymers used for antibiotic degradation

IF 2.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Polyhedron Pub Date : 2025-02-01 DOI:10.1016/j.poly.2024.117365

Xin Zhong , Mithun Kumar Ghosh , Yiguo Ayue , Jingyi Liang , Jun Wang , Mohd Afzal , Abdullah Alarifi , Tanmay Kumar Ghorai

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引用次数: 0

Abstract

In this study, we synthesized two new coordination polymers (CPs), [Cd₂(bbpy)(L)₂(DMF)₂]_n (1) and [Zn₂(bbpy)(L)₂(DMF)₂]_n (2) ((bbpy = 3,5-bis(benzoimidazo-2-ly)pyridine and H₂L = 4,4′-((1,2-phenylenebis(methylene) bis(oxy))dibenzoic acid)), using a solvothermal method. The optical band gaps of CP 1 and 2, determined using UV–visible spectroscopy, were 2.3 eV and 2.1 eV, respectively. Both CPs demonstrated strong photocatalytic activity for the degradation of various antibiotic pollutants under UV light, with CP 2 showing superior efficiency, particularly for metronidazole (MDZ), achieving 90.89 % degradation. The optimal photocatalytic conditions for CP 2 were a catalyst dosage of 5 mg/L, an MDZ concentration of 40 ppm, and a neutral pH. The stability and reusability of the photocatalyst were confirmed through multiple cycles of use. Radical trapping experiments identified superoxide radicals (O₂̇⁻) as the primary active species in the photocatalytic process. The photocatalytic efficiency of CP 2 was further tested in different water sources, with degradation rates of 87.99 % in tap water, 80.49 % in river water, and 92.13 % in deionized water. The presence of inorganic anions such as Cl⁻, NO₃⁻, and CO₃²⁻ was also studied, with CO₃²⁻ having the most significant inhibitory effect on the degradation efficiency. These results suggest that CP 2 is a promising candidate for practical wastewater treatment applications.

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来源期刊

Polyhedron 化学-晶体学

CiteScore

4.90

自引率

7.70%

发文量

515

审稿时长

2 months

期刊介绍： Polyhedron publishes original, fundamental, experimental and theoretical work of the highest quality in all the major areas of inorganic chemistry. This includes synthetic chemistry, coordination chemistry, organometallic chemistry, bioinorganic chemistry, and solid-state and materials chemistry. Papers should be significant pieces of work, and all new compounds must be appropriately characterized. The inclusion of single-crystal X-ray structural data is strongly encouraged, but papers reporting only the X-ray structure determination of a single compound will usually not be considered. Papers on solid-state or materials chemistry will be expected to have a significant molecular chemistry component (such as the synthesis and characterization of the molecular precursors and/or a systematic study of the use of different precursors or reaction conditions) or demonstrate a cutting-edge application (for example inorganic materials for energy applications). Papers dealing only with stability constants are not considered.