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Title: Room-Temperature Synthesis of Two-Dimensional Metal–Organic Frameworks with Controllable Size and Functionality for Enhanced CO 2 Sorption

Abstract

Here, two-dimensional (2D) metal-organic frameworks (MOFs), as a newly emerged member of 2D materials, have gained extensive attention due to their great potential in gas separation, sensing, and catalysis. However, it is still challenging to synthesize 2D MOFs with controllable size and functionalities using direct and scalable approaches at mild conditions (e.g., room temperature). Herein, we demonstrated onestep, room-temperature synthesis of a series of 2D MOFs based on Cu(II) paddle-wheel units, where the intrinsically anisotropic building blocks led to the anisotropic growth of 2D MOF nanoparticles, and the pillared structure led to high surface areas. The size of 2D MOFs can be adjusted by using a DMF/H 2O mixed solvent. The thinnest particles were around 3 nm, and the highest aspect ratio was up to 200. The functionalization of 2D MOFs was also achieved by selecting ligands with desired functional groups. The gas sorption results revealed that amino and nitro-functionalized 2D MOFs showed higher CO 2 sorption selectivity over CH 4 and N 2, suggesting these materials can be further applied in natural gas sweetening (CO 2/CH 4 separation) and carbon capture from flue gas (CO 2/N 2 separation).

Authors:
ORCiD logo [1]; ORCiD logo [1]
  1. The Pennsylvania State Univ., University Park, PA (United States)
Publication Date:
Research Org.:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1434712
Grant/Contract Number:  
FE0026825
Resource Type:
Accepted Manuscript
Journal Name:
Crystal Growth and Design
Additional Journal Information:
Journal Volume: 18; Journal Issue: 5; Journal ID: ISSN 1528-7483
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS

Citation Formats

Zha, Jie, and Zhang, Xueyi. Room-Temperature Synthesis of Two-Dimensional Metal–Organic Frameworks with Controllable Size and Functionality for Enhanced CO2 Sorption. United States: N. p., 2018. Web. doi:10.1021/acs.cgd.8b00349.
Zha, Jie, & Zhang, Xueyi. Room-Temperature Synthesis of Two-Dimensional Metal–Organic Frameworks with Controllable Size and Functionality for Enhanced CO2 Sorption. United States. doi:10.1021/acs.cgd.8b00349.
Zha, Jie, and Zhang, Xueyi. Tue . "Room-Temperature Synthesis of Two-Dimensional Metal–Organic Frameworks with Controllable Size and Functionality for Enhanced CO2 Sorption". United States. doi:10.1021/acs.cgd.8b00349. https://www.osti.gov/servlets/purl/1434712.
@article{osti_1434712,
title = {Room-Temperature Synthesis of Two-Dimensional Metal–Organic Frameworks with Controllable Size and Functionality for Enhanced CO2 Sorption},
author = {Zha, Jie and Zhang, Xueyi},
abstractNote = {Here, two-dimensional (2D) metal-organic frameworks (MOFs), as a newly emerged member of 2D materials, have gained extensive attention due to their great potential in gas separation, sensing, and catalysis. However, it is still challenging to synthesize 2D MOFs with controllable size and functionalities using direct and scalable approaches at mild conditions (e.g., room temperature). Herein, we demonstrated onestep, room-temperature synthesis of a series of 2D MOFs based on Cu(II) paddle-wheel units, where the intrinsically anisotropic building blocks led to the anisotropic growth of 2D MOF nanoparticles, and the pillared structure led to high surface areas. The size of 2D MOFs can be adjusted by using a DMF/H2O mixed solvent. The thinnest particles were around 3 nm, and the highest aspect ratio was up to 200. The functionalization of 2D MOFs was also achieved by selecting ligands with desired functional groups. The gas sorption results revealed that amino and nitro-functionalized 2D MOFs showed higher CO2 sorption selectivity over CH4 and N2, suggesting these materials can be further applied in natural gas sweetening (CO2/CH4 separation) and carbon capture from flue gas (CO2/N2 separation).},
doi = {10.1021/acs.cgd.8b00349},
journal = {Crystal Growth and Design},
number = 5,
volume = 18,
place = {United States},
year = {2018},
month = {4}
}

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