Cargando…
Biomass Related Highly Porous Metal Free Carbon for Gas Storage and Electrocatalytic Applications
In this paper we report the synthesis of a N, S co-doped metal free carbon cryogel obtained from a marine biomass derived precursor using urea as nitrogen source. Natural carrageenan intrinsically contains S and inorganic salt. The latter also serves as an activating agent during the pyrolytic step....
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8269557/ https://www.ncbi.nlm.nih.gov/pubmed/34201568 http://dx.doi.org/10.3390/ma14133488 |
_version_ | 1783720607942180864 |
---|---|
author | Andrade, Samantha K. Samaniego Bakos, István Dobos, Gábor Farkas, Attila Kiss, Gábor Klébert, Szilvia Madarász, János László, Krisztina |
author_facet | Andrade, Samantha K. Samaniego Bakos, István Dobos, Gábor Farkas, Attila Kiss, Gábor Klébert, Szilvia Madarász, János László, Krisztina |
author_sort | Andrade, Samantha K. Samaniego |
collection | PubMed |
description | In this paper we report the synthesis of a N, S co-doped metal free carbon cryogel obtained from a marine biomass derived precursor using urea as nitrogen source. Natural carrageenan intrinsically contains S and inorganic salt. The latter also serves as an activating agent during the pyrolytic step. The overall 11.6 atomic % surface heteroatom concentration comprises 5% O, 4.6% N and 1% S. The purified and annealed final carbon (CA) has a hierarchical pore structure of micro-, meso- and macropores with an apparent surface area of 1070 m(2)/g. No further treatment was applied. The gas adsorption potential of the samples was probed with H(2), CO(2) and CH(4), while the electrocatalytic properties were tested in an oxygen reduction reaction. The atmospheric CO(2) and CH(4) storage capacity at 0 °C in the low pressure range is very similar to that of HKUST-1, with the CO(2)/CH(4) selectivity below 20 bar, even exceeding that of the MOF, indicating the potential of CA in biogas separation. The electrocatalytic behavior was assessed in an aqueous KOH medium. The observed specific gravimetric capacitance 377 F/g was exceeded only in B, N dual doped and/or graphene doped carbons from among metal free electrode materials. The CA electrode displays almost the same performance as a commercial 20 wt% Pt/C electrode. The oxygen reduction reaction (ORR) exhibits the 4-electron mechanism. The 500-cycle preliminary stability test showed only a slight increase of the surface charge. |
format | Online Article Text |
id | pubmed-8269557 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-82695572021-07-10 Biomass Related Highly Porous Metal Free Carbon for Gas Storage and Electrocatalytic Applications Andrade, Samantha K. Samaniego Bakos, István Dobos, Gábor Farkas, Attila Kiss, Gábor Klébert, Szilvia Madarász, János László, Krisztina Materials (Basel) Article In this paper we report the synthesis of a N, S co-doped metal free carbon cryogel obtained from a marine biomass derived precursor using urea as nitrogen source. Natural carrageenan intrinsically contains S and inorganic salt. The latter also serves as an activating agent during the pyrolytic step. The overall 11.6 atomic % surface heteroatom concentration comprises 5% O, 4.6% N and 1% S. The purified and annealed final carbon (CA) has a hierarchical pore structure of micro-, meso- and macropores with an apparent surface area of 1070 m(2)/g. No further treatment was applied. The gas adsorption potential of the samples was probed with H(2), CO(2) and CH(4), while the electrocatalytic properties were tested in an oxygen reduction reaction. The atmospheric CO(2) and CH(4) storage capacity at 0 °C in the low pressure range is very similar to that of HKUST-1, with the CO(2)/CH(4) selectivity below 20 bar, even exceeding that of the MOF, indicating the potential of CA in biogas separation. The electrocatalytic behavior was assessed in an aqueous KOH medium. The observed specific gravimetric capacitance 377 F/g was exceeded only in B, N dual doped and/or graphene doped carbons from among metal free electrode materials. The CA electrode displays almost the same performance as a commercial 20 wt% Pt/C electrode. The oxygen reduction reaction (ORR) exhibits the 4-electron mechanism. The 500-cycle preliminary stability test showed only a slight increase of the surface charge. MDPI 2021-06-23 /pmc/articles/PMC8269557/ /pubmed/34201568 http://dx.doi.org/10.3390/ma14133488 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Andrade, Samantha K. Samaniego Bakos, István Dobos, Gábor Farkas, Attila Kiss, Gábor Klébert, Szilvia Madarász, János László, Krisztina Biomass Related Highly Porous Metal Free Carbon for Gas Storage and Electrocatalytic Applications |
title | Biomass Related Highly Porous Metal Free Carbon for Gas Storage and Electrocatalytic Applications |
title_full | Biomass Related Highly Porous Metal Free Carbon for Gas Storage and Electrocatalytic Applications |
title_fullStr | Biomass Related Highly Porous Metal Free Carbon for Gas Storage and Electrocatalytic Applications |
title_full_unstemmed | Biomass Related Highly Porous Metal Free Carbon for Gas Storage and Electrocatalytic Applications |
title_short | Biomass Related Highly Porous Metal Free Carbon for Gas Storage and Electrocatalytic Applications |
title_sort | biomass related highly porous metal free carbon for gas storage and electrocatalytic applications |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8269557/ https://www.ncbi.nlm.nih.gov/pubmed/34201568 http://dx.doi.org/10.3390/ma14133488 |
work_keys_str_mv | AT andradesamanthaksamaniego biomassrelatedhighlyporousmetalfreecarbonforgasstorageandelectrocatalyticapplications AT bakosistvan biomassrelatedhighlyporousmetalfreecarbonforgasstorageandelectrocatalyticapplications AT dobosgabor biomassrelatedhighlyporousmetalfreecarbonforgasstorageandelectrocatalyticapplications AT farkasattila biomassrelatedhighlyporousmetalfreecarbonforgasstorageandelectrocatalyticapplications AT kissgabor biomassrelatedhighlyporousmetalfreecarbonforgasstorageandelectrocatalyticapplications AT klebertszilvia biomassrelatedhighlyporousmetalfreecarbonforgasstorageandelectrocatalyticapplications AT madaraszjanos biomassrelatedhighlyporousmetalfreecarbonforgasstorageandelectrocatalyticapplications AT laszlokrisztina biomassrelatedhighlyporousmetalfreecarbonforgasstorageandelectrocatalyticapplications |