Design of highly microporous activated carbons based on walnut shell biomass for H2 and CO2 storage

Low-cost walnut shell-based carbons with high microporosity were prepared by simple one-step carbonization with chemical activation using KOH, exhibiting the promising potential to be a very good CO2 and H2 adsorbent. The physicochemical properties of the obtained carbons were characterized by N2 an...

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Autores: Serafin, Jarosław, Dziejarski, Bartosz, Cruz Junior, Orlando F., Sreńscek-Nazzal, Joanna
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/216472
Acceso en línea:https://hdl.handle.net/2445/216472
Access Level:acceso abierto
Palabra clave:Espectroscòpia Raman
Carbonització
Adsorció
Raman spectroscopy
Carbonization
Adsorption
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spelling Design of highly microporous activated carbons based on walnut shell biomass for H2 and CO2 storageSerafin, JarosławDziejarski, BartoszCruz Junior, Orlando F.Sreńscek-Nazzal, JoannaEspectroscòpia RamanCarbonitzacióAdsorcióRaman spectroscopyCarbonizationAdsorptionLow-cost walnut shell-based carbons with high microporosity were prepared by simple one-step carbonization with chemical activation using KOH, exhibiting the promising potential to be a very good CO2 and H2 adsorbent. The physicochemical properties of the obtained carbons were characterized by N2 and CO2 adsorption isotherms, X-ray powder diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and elemental analysis. The activated carbon AC-800 was characterized by a highly developed specific surface area of 1868 cm2/g and a high micropore content of 0.94 cm3/g. It highly exhibited CO2 uptake in 1 bar was up to 9.54, 5.17, 4.33 mmol/g for 0, 25 and 40 °C, respectively. In addition, the H2 storage capacity was 3.15 mmol/g at 40 bars. Significantly, confirmed an exceptionally high dependency of CO2 and H2 uptake vs micropores structure of activated carbon. AC-800 also shows good selectivity for CO2/N2 and fast adsorption kinetics that be easily regenerated with superior cyclic stability after multiple cycles The experimental isotherm data of activated carbon produced from walnut shells were analyzed using Langmuir, Freundlich, Temkin, Sips, and Toth isotherm equations. The fitting details showed that the multitemperature Toth equation is a powerful tool to mathematically represent CO2 and H2 isotherms on activated carbon. The easy way of preparation and high capture abilities endow this kind of activated carbon attractive as a promising adsorbent for CO2 and H2 storage.Elsevier Ltd2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/216472Articles publicats en revistes (Química Inorgànica i Orgànica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1016/j.carbon.2022.09.013Carbon, 2023, vol. 201, p. 633-647https://doi.org/10.1016/j.carbon.2022.09.013cc-by-nc-nd (c) Serafin, Jarosław, et al., 2023http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/2164722026-05-27T06:46:51Z
dc.title.none.fl_str_mv Design of highly microporous activated carbons based on walnut shell biomass for H2 and CO2 storage
title Design of highly microporous activated carbons based on walnut shell biomass for H2 and CO2 storage
spellingShingle Design of highly microporous activated carbons based on walnut shell biomass for H2 and CO2 storage
Serafin, Jarosław
Espectroscòpia Raman
Carbonització
Adsorció
Raman spectroscopy
Carbonization
Adsorption
title_short Design of highly microporous activated carbons based on walnut shell biomass for H2 and CO2 storage
title_full Design of highly microporous activated carbons based on walnut shell biomass for H2 and CO2 storage
title_fullStr Design of highly microporous activated carbons based on walnut shell biomass for H2 and CO2 storage
title_full_unstemmed Design of highly microporous activated carbons based on walnut shell biomass for H2 and CO2 storage
title_sort Design of highly microporous activated carbons based on walnut shell biomass for H2 and CO2 storage
dc.creator.none.fl_str_mv Serafin, Jarosław
Dziejarski, Bartosz
Cruz Junior, Orlando F.
Sreńscek-Nazzal, Joanna
author Serafin, Jarosław
author_facet Serafin, Jarosław
Dziejarski, Bartosz
Cruz Junior, Orlando F.
Sreńscek-Nazzal, Joanna
author_role author
author2 Dziejarski, Bartosz
Cruz Junior, Orlando F.
Sreńscek-Nazzal, Joanna
author2_role author
author
author
dc.subject.none.fl_str_mv Espectroscòpia Raman
Carbonització
Adsorció
Raman spectroscopy
Carbonization
Adsorption
topic Espectroscòpia Raman
Carbonització
Adsorció
Raman spectroscopy
Carbonization
Adsorption
description Low-cost walnut shell-based carbons with high microporosity were prepared by simple one-step carbonization with chemical activation using KOH, exhibiting the promising potential to be a very good CO2 and H2 adsorbent. The physicochemical properties of the obtained carbons were characterized by N2 and CO2 adsorption isotherms, X-ray powder diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and elemental analysis. The activated carbon AC-800 was characterized by a highly developed specific surface area of 1868 cm2/g and a high micropore content of 0.94 cm3/g. It highly exhibited CO2 uptake in 1 bar was up to 9.54, 5.17, 4.33 mmol/g for 0, 25 and 40 °C, respectively. In addition, the H2 storage capacity was 3.15 mmol/g at 40 bars. Significantly, confirmed an exceptionally high dependency of CO2 and H2 uptake vs micropores structure of activated carbon. AC-800 also shows good selectivity for CO2/N2 and fast adsorption kinetics that be easily regenerated with superior cyclic stability after multiple cycles The experimental isotherm data of activated carbon produced from walnut shells were analyzed using Langmuir, Freundlich, Temkin, Sips, and Toth isotherm equations. The fitting details showed that the multitemperature Toth equation is a powerful tool to mathematically represent CO2 and H2 isotherms on activated carbon. The easy way of preparation and high capture abilities endow this kind of activated carbon attractive as a promising adsorbent for CO2 and H2 storage.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/216472
url https://hdl.handle.net/2445/216472
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1016/j.carbon.2022.09.013
Carbon, 2023, vol. 201, p. 633-647
https://doi.org/10.1016/j.carbon.2022.09.013
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Serafin, Jarosław, et al., 2023
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Serafin, Jarosław, et al., 2023
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Ltd
publisher.none.fl_str_mv Elsevier Ltd
dc.source.none.fl_str_mv Articles publicats en revistes (Química Inorgànica i Orgànica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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