Synthesis, structure, adsorption and electrochemical properties of the new two-dimensional cobalt coordination polymer based on bifunctional ligand

IF 1.6 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR Transition Metal Chemistry Pub Date : 2024-05-28 DOI:10.1007/s11243-024-00586-7

Wei Yao, Ru Yang, Baotong Xu, He Yu, Le Kang, Andrei S. Potapov, Vladimir P. Fedin, Enjun Gao

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Abstract

A novel two-dimensional coordination polymer {[Co(Htia)₂(C₂H₅OH)₂]·H₂O}_n (1) (H₂tia = 5-(1H-1,2,4-triazol-1-yl)isophthalic acid, C₁₀N₃O₄H₇) was successfully synthesized by a solvothermal method using H₂tia containing –COOH and –N bifunctional groups as ligands and transition metal Co as the central ion. 1 was analyzed by XRD, IR, UV and TG. Single-crystal X-ray diffraction analysis shows that Co²⁺ ions in 1 are the hexagonal distorted octahedral geometry. Neighboring Co²⁺ ions form a two-dimensional grid using the Htia ligand as the rigid skeleton. The adjacent 2D layers interact through hydrogen bonds to build a three-dimensional supramolecular crystalline material. Based on the laminar structure of 1, we investigated the adsorption capacity of 1 on two cationic dyes, crystalline violet and Janus green B. The results show that 1 has a certain adsorption capacity and the maximum adsorption amount of the dyes can reach as high as 56 and 176 mg g⁻¹, respectively. The electrochemical experiment shows that 1 has good electrocatalytic activity in the electrolyte solution of 0.01 M KOH not only for the oxidation of H₂O₂, but also for the oxidation of ascorbic acid.

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基于双功能配体的新型二维钴配位聚合物的合成、结构、吸附和电化学特性

以含有 -COOH 和 -N 双官能团的 H2tia 为配体，以过渡金属 Co 为中心离子，通过溶热法成功合成了一种新型二维配位聚合物 {[Co(Htia)2(C2H5OH)2]-H2O}n (1)（H2tia = 5-(1H-1,2,4-三唑-1-基)间苯二甲酸，C10N3O4H7）。对 1 进行了 XRD、IR、UV 和 TG 分析。单晶 X 射线衍射分析表明，1 中的 Co2+ 离子呈六角畸变八面体几何形状。相邻的 Co2+ 离子以 Htia 配体为刚性骨架，形成二维网格。相邻的二维层通过氢键相互作用，形成三维超分子结晶材料。基于 1 的层状结构，我们研究了 1 对结晶紫和 Janus 绿 B 两种阳离子染料的吸附能力。结果表明，1 具有一定的吸附能力，对染料的最大吸附量分别高达 56 和 176 mg g-1。电化学实验表明，在 0.01 M KOH 的电解质溶液中，1 不仅对 H2O2 的氧化，而且对抗坏血酸的氧化都具有良好的电催化活性。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.