Hierarchical porous polyacrylonitrile-based activated carbon fibers for CO2 capture
Abstract
Hierarchical porous activated carbon fibers with a BET surface area of 2231 m2 g−1 and a pore volume of 1.16 cm3 g−1 were made from polyacrylonitrile through pre-oxidation and chemical activation. This type of material contains a large amount of nitrogen-containing groups (N content > 8.1 wt%) and consequently basic sites, resulting in a faster adsorption rate and a higher adsorption capacity for CO2 than pure carbon materials with analogous structures under the same conditions. Moreover, its adsorption capacity for CO2 was more than 3.3-times higher than that for N2. In particular, it showed a much higher CO2 adsorption capacity than zeolite 13X, which is conventionally used to capture CO2, in the presence of H2O.
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CO2 uptake of activated carbon is not only contributed by functional groups on the surface, but also determined by the porous structure and specific surface area.
“This is due to the fact that the CO2 uptake of activated carbon was not only contributed by functional groups on the surface, but also determined by the porous structure and specific surface area [61].”
From Preparation of Microporous Carbon from <i>Sargassum horneri</i> by Hydrothermal Carbonization and KOH Activation for CO<sub>2</sub> Capture (2018) · cites this paper as [61]
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“is is due to the fact that the CO2 uptake of activated carbon was not only contributed by functional groups on the surface, but also determined by the porous structure and specic surface area [61].”
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- Authors
- Shen, W., Zhang, S., He, Y., Li, J., & Fan, W.
- Affiliations
- Chinese Academy of Sciences (CN)
- Corresponding author
- Shen, Wenzhong
- Fan, Weibin
- Venue
- Journal of Materials Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2011
- Volume
- 21
- Issue
- 36
- Pages
- 14036
- ISSN
- 0959-9428 (ISSN-L)
- 1364-5501
- OpenAlex
- W1984626393
- Cited by
- 154
- References
- 29
- Citations by year
- 2026: 5 · 2025: 4 · 2024: 7 · 2023: 13 · 2022: 9 · 2021: 12 · 2020: 8 · 2019: 15 · 2018: 14 · 2017: 8 · 2016: 11 · 2015: 15 · 2014: 11 · 2013: 8 · 2012: 14
- FWCI
- 18.71
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Materials Chemistry (publishedVersion)
- Funders
- National Science Foundation
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
- Physical Sciences › Chemistry › Spectroscopy › Adsorption, diffusion, and thermodynamic properties of materials
- Physical Sciences › Engineering › Mechanical Engineering › Industrial Gas Emission Control
- Keywords
- activated carbon fiber, polyacrylonitrile, hierarchical porosity, CO2 capture, CO2 adsorption, pre-oxidation, chemical activation, nitrogen-containing functional groups, basic sites
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