Large Adsorption Capacity for Space Molecular Pollutants Realized by a Metal–Organic Framework

IF 3.9 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2024-10-27 DOI:10.1021/acs.langmuir.4c0292910.1021/acs.langmuir.4c02929

Rui Sun, Yuzhi Zhang*, Hongyu Gu*, Maofei Zhang, Xinyu Wang, Yangqiao Liu, Haogeng Li, Jiayu Ma and Lixin Song,

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Abstract

The rapid development of capable spacecraft coatings for removing volatile organic compounds (VOCs) demands materials with a large adsorption capacity to ensure a long-duration exploration mission in a low Earth orbit (LEO). MIL-53(Al) with abundant sites exhibits resistance to the space environment in the LEO and shows great potential for VOC removal. This study combined an adsorption experiment and first-principles simulations to investigate the adsorption performance of MIL-53(Al). MIL-53(Al) demonstrated an excellent adsorption capacity for various VOCs, reaching 606.04 mg/g for m-xylene and 22.69 cm³/g for methane, which is 6 times higher than traditional adsorption methods. First-principles simulations revealed that the adsorption capacity is significantly influenced by micropores through the pore effect and breath effect, which restrict diffusion and enhance adsorption, respectively. Additionally, we predicted the adsorption properties of VOCs that are difficult to characterize through ground-based simulated experiments, further validating the potential application of MIL-53(Al) for VOC removal in the LEO. This work expands the application range of MIL-53(Al), optimizes VOC removal strategies, and offers a novel approach to protecting spacecraft in the LEO. Our findings contribute to the development of advanced materials for space exploration and provide valuable insights into the design of efficient VOC removal systems for spacecraft in the LEO.

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金属有机框架实现对空间分子污染物的大吸附容量

要快速开发出能够去除挥发性有机化合物（VOC）的航天器涂层，就必须使用吸附容量大的材料，以确保在低地球轨道（LEO）上执行长时间的探索任务。具有丰富吸附位点的 MIL-53(Al)材料对低地球轨道的空间环境具有很强的抵抗力，在去除挥发性有机化合物方面具有很大的潜力。本研究结合吸附实验和第一原理模拟，对 MIL-53(Al)的吸附性能进行了研究。结果表明，MIL-53(Al) 对多种挥发性有机化合物具有出色的吸附能力，对间二甲苯的吸附量达到 606.04 mg/g，对甲烷的吸附量达到 22.69 cm3/g，是传统吸附方法的 6 倍。第一原理模拟显示，微孔通过孔隙效应和呼吸效应分别限制扩散和增强吸附，对吸附容量产生显著影响。此外，我们还预测了地面模拟实验难以表征的挥发性有机化合物的吸附特性，进一步验证了 MIL-53(Al)在低地轨道去除挥发性有机化合物方面的潜在应用。这项工作扩大了 MIL-53(Al)的应用范围，优化了去除挥发性有机化合物的策略，并提供了一种保护低地轨道航天器的新方法。我们的研究成果有助于开发用于太空探索的先进材料，并为设计低地轨道航天器的高效挥发性有机化合物去除系统提供了宝贵的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).