Two new Mn(II)-based coordination polymers built by multicarboxylate for photocatalytic elimination of nitrofurazone

IF 2.7 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganica Chimica Acta Pub Date : 2024-08-21 DOI:10.1016/j.ica.2024.122326

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引用次数: 0

Abstract

Two new 2D Mn(II)-based coordination polymers (CPs), {[Mn(H₃L)(phen)]·H₂O}_n (1) and {[Mn(H₃L)(bpy)]·1.5H₂O}_n (2), were synthesized using one pot procedure. They were isolated from 2,4-bis(3,5-dicarboxylphenxoy)benzoic acid (H₅L) and two chelating N-donor ligands 1,10-Phenanthroline (phen) and 2,2′-bipyridine (bpy) for photocatalytic applications. The identification of the complexes was confirmed through elemental analysis, FTIR, PXRD, crystallography, and TG analysis, confirming distorted octahedral NNO4 coordination of Mn(II) with the carboxylate O atoms chelating and syn-syn bridging mode (1) and (2). Powder XRD confirmed phase-purity, while TG analysis indicated thermal stability of the complexes up to 400 °C. Both Mn(II)-based coordination polymers (1) and (2) showed optical semiconducting behavior, making them suitable candidates for photocatalysis. The Mn(II)-based coordination polymers (1) showed a 91.93 % degradation of nitrofurazone (NFZ) through photodecomposition. The trapping experiment established that the catalysis of NFZ photodecomposition is primarily attributed to O₂⁻ radicals.

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两种新型锰(II)基多羧酸配位聚合物用于光催化消除硝基呋喃酮

采用一锅法合成了两种新的二维锰（II）基配位聚合物（CPs）：{[Mn(H3L)(phen)]-H2O}n (1) 和 {[Mn(H3L)(bpy)]-1.5H2O}n (2)。它们是从 2,4-双（3,5-二羧基苯甲酰）苯甲酸（H5L）和两种螯合 N-供体配体 1,10-菲罗啉（phen）和 2,2′-联吡啶（bpy）中分离出来的，用于光催化应用。通过元素分析、傅立叶变换红外光谱（FTIR）、粉末 X 射线衍射（PXRD）、晶体学和热导分析，确认了锰(II)的畸变八面体 NNO4 配位与羧酸盐 O 原子的螯合和同步桥接模式 (1) 和 (2)。粉末 XRD 证实了这些复合物的相纯度，而 TG 分析则表明这些复合物的热稳定性可达 400 ℃。基于锰（II）的配位聚合物（1）和（2）都显示出光学半导体行为，因此适合用于光催化。锰（II）基配位聚合物（1）通过光分解对硝基呋喃唑（NFZ）的降解率达到 91.93%。捕获实验证实，催化 NFZ 光分解的主要原因是 O2- 自由基。

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来源期刊

Inorganica Chimica Acta 化学-无机化学与核化学

CiteScore

6.00

自引率

3.60%

发文量

440

审稿时长

35 days

期刊介绍： Inorganica Chimica Acta is an established international forum for all aspects of advanced Inorganic Chemistry. Original papers of high scientific level and interest are published in the form of Articles and Reviews. Topics covered include: • chemistry of the main group elements and the d- and f-block metals, including the synthesis, characterization and reactivity of coordination, organometallic, biomimetic, supramolecular coordination compounds, including associated computational studies; • synthesis, physico-chemical properties, applications of molecule-based nano-scaled clusters and nanomaterials designed using the principles of coordination chemistry, as well as coordination polymers (CPs), metal-organic frameworks (MOFs), metal-organic polyhedra (MPOs); • reaction mechanisms and physico-chemical investigations computational studies of metalloenzymes and their models; • applications of inorganic compounds, metallodrugs and molecule-based materials. Papers composed primarily of structural reports will typically not be considered for publication.