通过苯-1,3,5-三羧酸自组装合成准二维 MIL-100 (Fe):室温下显著增强的有机染料吸附动力学

IF 5.1 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Nanoscale Pub Date : 2024-10-15 DOI:10.1039/D4NR02857K
Ghazal Rabiee, Alireza Abbasi and Mohammad Behbahani
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引用次数: 0

摘要

在环境污染日益严重的情况下,二维材料在环境修复中发挥着举足轻重的作用。然而,二维金属有机框架(2D-MOFs)仍有待深入研究。本研究介绍了一种合成二维金属有机框架(尤其是 MIL-100-(Fe))的新方法,用于吸附新兴有机染料。通过利用苯-1,3,5-三羧酸(BTC)的自组装,我们形成了以 BTC 为构件的薄固体界面,从而控制了 MIL-100-(Fe)的生长。与三维结构相比,准二维结构的吸附容量提高了 35% 以上,罗丹明 B 的吸附去除动力学提高了 5.5 倍。这种新方法克服了传统合成方法的局限性,为二维-MOF 合成提供了一种可复制的高产程序。与三维吸附剂(三维 MIL-100 Fe)相比,所制备的吸附剂对罗丹明 B 的吸附效果显著提高,并且具有较高的结构稳定性和可回收性。在染料初始浓度为 1-40 mg L-1 的条件下,所制备的吸附剂通过朗缪尔吸附机理和伪秒阶动力学,在 90 分钟内的吸附率超过 99%。我们的研究开创了一种合成准二维-MIL-100-(Fe)的方法,为制造其他二维-MOF 结构(尤其是基于羧酸的结构)奠定了基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Quasi-2D MIL-100 (Fe) synthesis via benzene-1,3,5-tricarboxylic acid self-assembly: organic dye adsorption at room temperature with dramatically enhanced kinetics†

Quasi-2D MIL-100 (Fe) synthesis via benzene-1,3,5-tricarboxylic acid self-assembly: organic dye adsorption at room temperature with dramatically enhanced kinetics†

Amid increasing environmental pollution, two-dimensional materials have played pivotal roles in environmental remediation. However, two-dimensional metal–organic frameworks (2D-MOFs) have yet to be thoroughly explored. This study introduces a novel approach to synthesize 2D-MOFs, particularly focusing on MIL-100-(Fe), for the adsorption of emerging organic dyes. By harnessing the self-assembly of benzene-1,3,5-tricarboxylic acid (BTC), we formed thin solid interfaces of BTC as building blocks to control the growth of MIL-100-(Fe). This resulted in quasi-2D structures that showed over a 35% increase in adsorption capacity and a 5.5-fold increase in the adsorption kinetics of Rhodamine B removal compared to their 3D counterparts. This new method overcomes traditional synthesis limitations, offering a replicable and high-yield procedure for 2D-MOF synthesis. Compared to its three-dimensional counterpart (3D MIL-100 Fe), the prepared adsorbent exhibited remarkably higher efficacy in the adsorption of Rhodamine B, with high structural stability and recyclability. The prepared adsorbent shows over 99% adsorption within 90 minutes for initial dye concentrations of 1–40 mg L−1via the Langmuir adsorption mechanism and pseudo-second-order kinetics. Our research pioneers a method for the synthesis of quasi 2D-MIL-100-(Fe), laying the groundwork for fabricating other 2D-MOF structures, particularly those based on carboxylic acids.

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来源期刊
Nanoscale
Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
12.10
自引率
3.00%
发文量
1628
审稿时长
1.6 months
期刊介绍: Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.
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