CO2 adsorption on crystalline graphitic nanostructures
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http://hdl.handle.net/10045/37738
Títol: | CO2 adsorption on crystalline graphitic nanostructures |
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Autors: | Casco, Mirian Elizabeth | Morelos Gómez, Aarón | Vega Díaz, Sofia Magdalena | Cruz Silva, Rodolfo | Tristán López, Ferdinando | Muramatsu, Hiroyuki | Hayashi, Takuya | Martinez-Escandell, Manuel | Terrones, Mauricio | Endo, Morinobu | Rodríguez Reinoso, Francisco | Silvestre-Albero, Joaquín |
Grups d'investigació o GITE: | Materiales Avanzados |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Paraules clau: | CO2 capture | Carbon | MWCNTs | Nanoribbons | Graphene |
Àrees de coneixement: | Química Inorgánica |
Data de publicació: | de març-2014 |
Editor: | Elsevier |
Citació bibliogràfica: | Journal of CO2 Utilization. 2014, 5: 60-65. doi:10.1016/j.jcou.2014.01.001 |
Resum: | CO2 adsorption has been measured in different types of graphitic nanostructures (MWCNTs, acid treated MWCNTs, graphene nanoribbons and pure graphene) in order to evaluate the effect of the different defective regions/conformations in the adsorption process, i.e., sp3 hybridized carbon, curved regions, edge defects, etc. This analysis has been performed both in pure carbon and nitrogen-doped nanostructures in order to monitor the effect of surface functional groups on surface created after using different treatments (i.e., acid treatment and thermal expansion of the MWCNTs), and study their adsorption properties. Interestingly, the presence of exposed defective regions in the acid treated nanostructures (e.g., uncapped nanotubes) gives rise to an improvement in the amount of CO2 adsorbed; the adsorption process being completely reversible. For N-doped nanostructures, the adsorption capacity is further enhanced when compared to the pure carbon nanotubes after the tubes were unzipped. The larger proportion of defect sites and curved regions together with the presence of stronger adsorbent–adsorbate interactions, through the nitrogen surface groups, explains their larger adsorption capacity. |
Patrocinadors: | Financial support from the MICINN (project PLE2009-0052) and Generalitat Valenciana (PROMETEO/2009-002). SMVD, FTL, HM, TH, RCS, MT, and ME acknowledge support from the Research Center for Exotic Nanocarbons, Japan regional Innovation Strategy Program by the Excellence, JST. AMG acknowledges support from NEDO for postdoctoral position. |
URI: | http://hdl.handle.net/10045/37738 |
ISSN: | 2212-9820 (Print) | 2212-9839 (Online) |
DOI: | 10.1016/j.jcou.2014.01.001 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Revisió científica: | si |
Versió de l'editor: | http://dx.doi.org/10.1016/j.jcou.2014.01.001 |
Apareix a la col·lecció: | INV - LMA - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2014_Casco_etal_JCOU_final.pdf | Versión final (acceso restringido) | 1,21 MB | Adobe PDF | Obrir Sol·licitar una còpia |
2014_Casco_etal_JCOU.pdf | Versión revisada (acceso abierto) | 1,7 MB | Adobe PDF | Obrir Vista prèvia |
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