插入单宁酸蚀刻 MOF 纳米晶体的 MXene 膜用于超快水渗透：阐明纳米约束层间通道中的水传输机制

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-02-05 DOI:10.1021/acs.nanolett.4c05985

Xiaowei Zhu, Fangjian Liu, Lijun Meng, Qieyuan Gao, Xi Wang, Mengmeng Lou, Xiangmin Xu, Wei Zhang, Fang Li, Bart Van der Bruggen

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引用次数: 0

摘要

利用纳米限制层间通道内的孔隙和层间工程，是设计高永久选择性 MXene（Ti3C2TX）膜的一种巧妙方法。在这里，具有中空结构的单宁酸（TA）蚀刻 ZIF-8 （TZIF-8）纳米晶体被有效地插入到 MXene 膜的层间距中。首先，密度泛函理论（DFT）结果证明了 TA 与 ZIF-8 的反应机理。然后，通过分子动力学模拟阐明了 MXene/TZIF-8 膜吸水性能增强的内在机制是由于水/TZIF-8 系统的结合能高于水/ZIF-8 系统。此外，各种实验结论、表征和模拟计算全面证实了 MXene/TZIF-8 膜的低传质阻力和丰富的传质途径。结果表明，最佳的 MXene/TZIF-8 膜具有较高的透水性，同时对各种油/水乳液具有令人满意的分离效果。这项工作有望加深人们对 MXene 膜中沿着层间纳米通道的高效水传输的理解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

MXene Membranes Inserted with Tannic Acid Etched MOF Nanocrystals for Ultrafast Water Permeation: Elucidating the Water Transport Mechanism in Nanoconfined Interlaminar Channels

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MXene Membranes Inserted with Tannic Acid Etched MOF Nanocrystals for Ultrafast Water Permeation: Elucidating the Water Transport Mechanism in Nanoconfined Interlaminar Channels

Utilizing pore and interlayer engineering within nanoconfined interlaminar channels represents an ingenious approach to design highly permselective MXene (Ti₃C₂T_X) membranes. Herein, the tannic acid (TA) etched ZIF-8 (TZIF-8) nanocrystals with hollow structures were effectually inserted into the interlayer spacing of MXene membranes. First, the density functional theory (DFT) results demonstrated the reaction mechanism between TA and ZIF-8. Then, the underlying mechanism of enhanced water-adsorptive properties for MXene/TZIF-8 membrane was due to the higher binding energy of water/TZIF-8 system than that of water/ZIF-8 system, elucidated by molecular dynamic simulation. Furthermore, the low mass transfer resistance and abundant mass transfer pathways of the MXene/TZIF-8 membrane were comprehensively proved by various experimental conclusions, characterizations and simulation calculations. As a result, the optimal MXene/TZIF-8 membrane exhibited high water permeance and concurrently satisfactory separation efficacy toward various oil/water emulsions. This work is anticipated to deepen the comprehension of high-efficiency water transport along interbedded nanochannels in MXene membranes.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.