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High-Performance Ac...
High-Performance Activated Carbons Synthesized from Nanocellulose for CO2 Capture and Extremely Selective Removal of Volatile Organic Compounds
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- Xu, Chao (författare)
- Uppsala universitet,Nanoteknologi och funktionella material
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- Ruan, Chang-Qing (författare)
- Uppsala universitet,Nanoteknologi och funktionella material
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- Li, Yunxiang (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Department of Materials and Environmental Chemistry,Stockholm University, Stockholm, Sweden
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- Lindh, Jonas, 1977- (författare)
- Uppsala universitet,Nanoteknologi och funktionella material
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- Strömme, Maria, 1970- (författare)
- Uppsala universitet,Nanoteknologi och funktionella material
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(creator_code:org_t)
- 2017-12-27
- 2018
- Engelska.
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Ingår i: Advanced Sustainable Systems. - : Wiley. - 2366-7486. ; 2:2
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- A series of sustainable activated carbons (ACs) with large surface areas and tunable pore sizes is synthesized from Cladophora cellulose and its chemically modified derivatives in a one-step physical carbonization/activation process. The molecular structure of the cellulose precursors and the carbonization/activation atmosphere (N-2 or CO2) significantly influence the pore structure of the ACs. When using oxidized cellulose and its further cross-linkages as the precursor, the ACs have a large volume of ultramicropores (pore diameter < 0.8 nm). Activation in CO2 results in ACs with surface areas up to 1241 m(2) g(-1). These ACs have a high CO2 uptake capacity (2.29 mmol g(-1) at 0.15 bar, 5.52 mmol g(-1) at 1 bar; 273 K) and a high CO2-over-N-2 selectivity (42 at 273 K). In addition, the capacity of the ACs to adsorb vapors of volatile organic compounds (VOCs) is remarkable, with values up to 0.97 mmol g(-1) at very low VOC concentrations (200 ppmv). The ACs have ultrahigh VOCs-over-N-2 selectivity up to 9.35 x 10(3) at 293 K for 0.02 vol%/99.8 vol% of benzene/N-2 mixture. It is anticipated that these ACs will be useful as sorbents for the postcombustion capture of CO2 and for indoor removal and direct air capture of various VOCs.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
Nyckelord
- activated carbons
- Cladophora cellulose
- CO2 capture and separation
- volatile organic compounds removal
- GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
- Engineering Science with specialization in Nanotechnology and Functional Materials
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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