Three-Dimensional Covalent Organic Framework for Efficient Hydrogen Storage through Polarization-Wall Engineering

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Nano Letters Pub Date : 2025-04-03 DOI:10.1021/acs.nanolett.5c00934

Jia Chen, Zhuozhuo Tang, Da Zhu, Li Sheng, Zonglong Li, Yang Yang, Jianlong Wang, Yaping Tang, Xiangming He, Hong Xu

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Abstract

Covalent organic frameworks (COFs), characterized by high surface areas and tunable pore structures/environments, are regarded as a promising alternative to physisorption H₂ storage materials. However, their interaction with hydrogen is often too weak, necessitating the exploration of strategies to enhance sorption heat. Herein, we strengthened the adsorption induction of COF on H₂ through a polarized wall engineering. The fluorine groups on the pore wall of three-dimensional COFs polarize their surrounding regions, resulting in high sorption heat sites. Due to the enhanced H₂ sorption heat, the total H₂ uptake of 3D-F-COF is up to to 5.96 wt % at 77 K and 90 bar. Moreover, the H₂ adsorption enhancement effect of the polar group does not involve chemisorption, and the material exhibits excellent cycling stability. These results reveal that modulating the H₂ sorption heat by incorporating polar groups is a promising strategy for achieving efficient H₂ storage in porous materials.

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通过极化壁工程实现高效储氢的三维共价有机框架

共价有机骨架（COFs）具有高比表面积和可调孔隙结构/环境的特点，被认为是一种有前途的物理吸附储氢材料。然而，它们与氢的相互作用往往太弱，需要探索提高吸收热的策略。本文通过极化壁工程加强了COF对H2的吸附诱导。三维COFs孔壁上的氟基团使其周围区域极化，从而产生较高的吸附热位。由于H2吸附热的增强，3D-F-COF在77 K和90 bar条件下的H2吸收量高达5.96 wt %。此外，极性基团的H2吸附增强作用不涉及化学吸附，材料表现出良好的循环稳定性。这些结果表明，通过加入极性基团来调节H2吸附热是一种很有前途的策略，可以在多孔材料中实现高效的H2储存。

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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.

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