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Hydrogen storage in purified multi-walled carbon nanotubes: gas hydrogenation cycles effect on the adsorption kinetics and their performance
Multi-walled carbon nanotubes (MWCNTs) are an alternative for storage with low cost, eco-friendly, and good performance for both process adsorption and desorption. Herein, a purification procedure of MWCNTs was successfully described and studied by using XRD, TEM, Raman spectroscopy and by means of...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8654801/ https://www.ncbi.nlm.nih.gov/pubmed/34934831 http://dx.doi.org/10.1016/j.heliyon.2021.e08494 |
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author | Mosquera-Vargas, Edgar Tamayo, Rocío Morel, Mauricio Roble, Martín Díaz-Droguett, Donovan E. |
author_facet | Mosquera-Vargas, Edgar Tamayo, Rocío Morel, Mauricio Roble, Martín Díaz-Droguett, Donovan E. |
author_sort | Mosquera-Vargas, Edgar |
collection | PubMed |
description | Multi-walled carbon nanotubes (MWCNTs) are an alternative for storage with low cost, eco-friendly, and good performance for both process adsorption and desorption. Herein, a purification procedure of MWCNTs was successfully described and studied by using XRD, TEM, Raman spectroscopy and by means of N(2) adsorption-desorption isotherms using the BET method. The H(2) storage properties at room temperature of the purified carbon nanotubes exposed to gas under pressures between 0.39 and 13.33 kPa was investigated by using the quartz crystal microbalance technique. It was found that the H(2) adsorption capacity is strongly dependent on the morphological and structural characteristics of the carbon nanotubes and their specific surface area. The best sample with specific surface area of 729.4 ± 3 m(2) g(−1) shows a maximum adsorption capacity of 3.46 wt% at 12.79 kPa of H(2) exposure pressure. The adsorption kinetics (t(95%)) from the different purified MWCNTs was also investigated as a function of the H(2) exposure pressure as well as the performance of these MWCNTs on the reversibility of the H(2) loading/unloading process when underwent to successive cycles of gas exposure. |
format | Online Article Text |
id | pubmed-8654801 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-86548012021-12-20 Hydrogen storage in purified multi-walled carbon nanotubes: gas hydrogenation cycles effect on the adsorption kinetics and their performance Mosquera-Vargas, Edgar Tamayo, Rocío Morel, Mauricio Roble, Martín Díaz-Droguett, Donovan E. Heliyon Research Article Multi-walled carbon nanotubes (MWCNTs) are an alternative for storage with low cost, eco-friendly, and good performance for both process adsorption and desorption. Herein, a purification procedure of MWCNTs was successfully described and studied by using XRD, TEM, Raman spectroscopy and by means of N(2) adsorption-desorption isotherms using the BET method. The H(2) storage properties at room temperature of the purified carbon nanotubes exposed to gas under pressures between 0.39 and 13.33 kPa was investigated by using the quartz crystal microbalance technique. It was found that the H(2) adsorption capacity is strongly dependent on the morphological and structural characteristics of the carbon nanotubes and their specific surface area. The best sample with specific surface area of 729.4 ± 3 m(2) g(−1) shows a maximum adsorption capacity of 3.46 wt% at 12.79 kPa of H(2) exposure pressure. The adsorption kinetics (t(95%)) from the different purified MWCNTs was also investigated as a function of the H(2) exposure pressure as well as the performance of these MWCNTs on the reversibility of the H(2) loading/unloading process when underwent to successive cycles of gas exposure. Elsevier 2021-11-27 /pmc/articles/PMC8654801/ /pubmed/34934831 http://dx.doi.org/10.1016/j.heliyon.2021.e08494 Text en © 2021 Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article Mosquera-Vargas, Edgar Tamayo, Rocío Morel, Mauricio Roble, Martín Díaz-Droguett, Donovan E. Hydrogen storage in purified multi-walled carbon nanotubes: gas hydrogenation cycles effect on the adsorption kinetics and their performance |
title | Hydrogen storage in purified multi-walled carbon nanotubes: gas hydrogenation cycles effect on the adsorption kinetics and their performance |
title_full | Hydrogen storage in purified multi-walled carbon nanotubes: gas hydrogenation cycles effect on the adsorption kinetics and their performance |
title_fullStr | Hydrogen storage in purified multi-walled carbon nanotubes: gas hydrogenation cycles effect on the adsorption kinetics and their performance |
title_full_unstemmed | Hydrogen storage in purified multi-walled carbon nanotubes: gas hydrogenation cycles effect on the adsorption kinetics and their performance |
title_short | Hydrogen storage in purified multi-walled carbon nanotubes: gas hydrogenation cycles effect on the adsorption kinetics and their performance |
title_sort | hydrogen storage in purified multi-walled carbon nanotubes: gas hydrogenation cycles effect on the adsorption kinetics and their performance |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8654801/ https://www.ncbi.nlm.nih.gov/pubmed/34934831 http://dx.doi.org/10.1016/j.heliyon.2021.e08494 |
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