Enhanced Carbon Capture Behavior of Carbon Fibers via Ionic Liquid Modification

Narges Mokhtari-Nori; Huimin Luo; Ryan Paul; Frederic Vautard; Yuqing Fu; Juntian Fan; De en Jiang; Zhenzhen Yang; Sheng Dai

doi:10.1002/cnma.202200480

Enhanced Carbon Capture Behavior of Carbon Fibers via Ionic Liquid Modification

Narges Mokhtari-Nori, Huimin Luo, Ryan Paul, Frederic Vautard, Yuqing Fu, Juntian Fan, De en Jiang, Zhenzhen Yang, Sheng Dai

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Carbon-based materials are widely deployed in carbon capture but are only limited to physisorption procedures. Further extending functionalized carbon materials to CO₂ chemisorption under low CO₂ concentration is highly desirable yet challenging. Herein, a carbon fiber composed of solely ultra-micropores (∼0.45 nm) was deployed as the precursor to avoid the pore blocking effect, which was modified by superbase-derived ionic liquids (ILs) containing strong interaction sites with CO₂. By forming a thin coating layer on the surface, the as-afforded surface-functionalized fiber materials demonstrated enhanced CO₂ uptake capacity and improved CO₂ sorption kinetics, as evaluated by both the volumetric method and thermogravimetric analysis, as well as the calculated energy distribution curves. The achievements made in this work provide guidance on the functionalization of carbon-based materials towards enhanced CO₂ chemisorption by forming a thin layer of selected IL coating.

Original language	English
Article number	e202200480
Journal	ChemNanoMat
Volume	9
Issue number	1
DOIs	https://doi.org/10.1002/cnma.202200480
State	Published - Jan 2023

Funding

The research was supported financially by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, US Department of Energy (DE‐SC0022273). H. Luo, R. Paul, and F. Vautard were supported by LDRD program in ORNL (10813) for ionic liquid and fiber synthesis.

Keywords

CO chemisorption
carbon capture
carbon fiber
ionic liquid
surface modification

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10.1002/cnma.202200480

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title = "Enhanced Carbon Capture Behavior of Carbon Fibers via Ionic Liquid Modification",

abstract = "Carbon-based materials are widely deployed in carbon capture but are only limited to physisorption procedures. Further extending functionalized carbon materials to CO2 chemisorption under low CO2 concentration is highly desirable yet challenging. Herein, a carbon fiber composed of solely ultra-micropores (∼0.45 nm) was deployed as the precursor to avoid the pore blocking effect, which was modified by superbase-derived ionic liquids (ILs) containing strong interaction sites with CO2. By forming a thin coating layer on the surface, the as-afforded surface-functionalized fiber materials demonstrated enhanced CO2 uptake capacity and improved CO2 sorption kinetics, as evaluated by both the volumetric method and thermogravimetric analysis, as well as the calculated energy distribution curves. The achievements made in this work provide guidance on the functionalization of carbon-based materials towards enhanced CO2 chemisorption by forming a thin layer of selected IL coating.",

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AU - Paul, Ryan

AU - Vautard, Frederic

AU - Fu, Yuqing

AU - Fan, Juntian

AU - Jiang, De en

AU - Yang, Zhenzhen

AU - Dai, Sheng

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N2 - Carbon-based materials are widely deployed in carbon capture but are only limited to physisorption procedures. Further extending functionalized carbon materials to CO2 chemisorption under low CO2 concentration is highly desirable yet challenging. Herein, a carbon fiber composed of solely ultra-micropores (∼0.45 nm) was deployed as the precursor to avoid the pore blocking effect, which was modified by superbase-derived ionic liquids (ILs) containing strong interaction sites with CO2. By forming a thin coating layer on the surface, the as-afforded surface-functionalized fiber materials demonstrated enhanced CO2 uptake capacity and improved CO2 sorption kinetics, as evaluated by both the volumetric method and thermogravimetric analysis, as well as the calculated energy distribution curves. The achievements made in this work provide guidance on the functionalization of carbon-based materials towards enhanced CO2 chemisorption by forming a thin layer of selected IL coating.

AB - Carbon-based materials are widely deployed in carbon capture but are only limited to physisorption procedures. Further extending functionalized carbon materials to CO2 chemisorption under low CO2 concentration is highly desirable yet challenging. Herein, a carbon fiber composed of solely ultra-micropores (∼0.45 nm) was deployed as the precursor to avoid the pore blocking effect, which was modified by superbase-derived ionic liquids (ILs) containing strong interaction sites with CO2. By forming a thin coating layer on the surface, the as-afforded surface-functionalized fiber materials demonstrated enhanced CO2 uptake capacity and improved CO2 sorption kinetics, as evaluated by both the volumetric method and thermogravimetric analysis, as well as the calculated energy distribution curves. The achievements made in this work provide guidance on the functionalization of carbon-based materials towards enhanced CO2 chemisorption by forming a thin layer of selected IL coating.

KW - CO chemisorption

KW - carbon capture

KW - carbon fiber

KW - ionic liquid

KW - surface modification

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Enhanced Carbon Capture Behavior of Carbon Fibers via Ionic Liquid Modification

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