2D MOFs based on mixed ligand strategy: CO2 chemical fixation and dye adsorption

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Structure Pub Date : 2025-10-03 DOI:10.1016/j.molstruc.2025.144244

Fu-Long Ma , Lan Ma , Hao Zhang , Xin-Fang Wang , Lu-Lu Wang , Duo-Zhi Wang

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引用次数: 0

Abstract

Four two-dimensional (2D) Ni/Co/Cd metal organic frameworks (MOFs), namely {[Ni₂(L)₂(SA)₂(H₂O)₂]·5H₂O}_n (1), {[Co₂(L)₂(SA)₂(H₂O)₂]·7H₂O}_n (2), {[Cd(L)(SA)H₂O]·3H₂O}_n (3), and [Cd₂(L)₂(GA)₂]_n (4) (L = 4′-(4-(1H-1,2,4-triazol-1-yl)phenyl)-4,2′:6′,4′'-terpyridine, SA = succinic acid, GA = glutaric acid) were synthesized by mixed ligand strategy. Catalysis performance studies revealed that 4 could efficiently convert CO₂ into cyclic carbonates with a high yield (97 %) and selectivity under mild conditions. The cyclic carbonates were characterized by IR and ¹H NMR. In addition, adsorption research indicated that 4 could be used as an excellent adsorbent for selectively absorbing CR (Congo red = sodium 3,3′-((1E,1′E)-[1,1′-biphenyl]-4,4′-diylbis(diazene-2,1-diyl))bis(4-aminonap -hthalene-1-sulfonate)) in water with a maximum adsorption capacity of 1068 mg∙g^-1. The recycling experiments demonstrated that the catalytic activity did not obviously decrease and the adsorption capacity had no significant loss after 5 cycles, and the framework structures also remained stable. Therefore, 4 can be used as an efficient and stable candidate material for heterogeneous catalyst and dye adsorbent.

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基于混合配体策略的二维mof: CO2化学固定和染料吸附

采用混合配体策略合成了4种二维（2D） Ni/Co/Cd金属有机骨架（MOFs），分别为{[Ni2(L)2(SA)2(H2O)2]·5H2O}n(1)、{[Co2(L)2(SA)2(H2O)2]·7H2O}n(2)、{[Cd(L)(SA)H2O]·3H2O}n(3)和[Cd2(L)2(GA)2]n (4) （L = 4′-（4-（1h -1,2,4-三唑-1-基）苯基）-4,2′：6′，4”-三吡啶，SA =琥珀酸，GA =戊二酸）。催化性能研究表明，在温和的条件下，4能以较高的收率（97%）和选择性高效地将CO2转化为环状碳酸盐。用红外光谱和核磁共振氢谱对化合物进行了表征。此外，吸附研究表明，4可以作为一种优良的吸附剂选择性吸附CR(刚刚红= 3,3 ' -（（1E, 1E)-[1,1 ' -联苯]-4,4 ' -二基双（二氮-2,1-二基））-二（4-氨基ap -乙烯-1-磺酸钠）），最大吸附量为1068 mg∙g-1。回收实验表明，经过5次循环后，催化活性没有明显下降，吸附量也没有明显损失，骨架结构也保持稳定。因此，4可以作为一种高效稳定的多相催化剂和染料吸附剂的候选材料。

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来源期刊

Journal of Molecular Structure 化学-物理化学

CiteScore

7.10

自引率

15.80%

发文量

2384

审稿时长

45 days

期刊介绍： The Journal of Molecular Structure is dedicated to the publication of full-length articles and review papers, providing important new structural information on all types of chemical species including: • Stable and unstable molecules in all types of environments (vapour, molecular beam, liquid, solution, liquid crystal, solid state, matrix-isolated, surface-absorbed etc.) • Chemical intermediates • Molecules in excited states • Biological molecules • Polymers. The methods used may include any combination of spectroscopic and non-spectroscopic techniques, for example: • Infrared spectroscopy (mid, far, near) • Raman spectroscopy and non-linear Raman methods (CARS, etc.) • Electronic absorption spectroscopy • Optical rotatory dispersion and circular dichroism • Fluorescence and phosphorescence techniques • Electron spectroscopies (PES, XPS), EXAFS, etc. • Microwave spectroscopy • Electron diffraction • NMR and ESR spectroscopies • Mössbauer spectroscopy • X-ray crystallography • Charge Density Analyses • Computational Studies (supplementing experimental methods) We encourage publications combining theoretical and experimental approaches. The structural insights gained by the studies should be correlated with the properties, activity and/ or reactivity of the molecule under investigation and the relevance of this molecule and its implications should be discussed.