Hydrogen-bond supramolecular hydrogels as efficient precursors in the preparation of freestanding 3D carbonaceous architectures containing BCNO nanocrystals and exhibiting a high CO2/CH4 adsorption ratio
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Title: | Hydrogen-bond supramolecular hydrogels as efficient precursors in the preparation of freestanding 3D carbonaceous architectures containing BCNO nanocrystals and exhibiting a high CO2/CH4 adsorption ratio |
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Authors: | López Salas, Nieves | Ferrer Pla, María Luisa | Gutiérrez Pérez, María Concepción | Fierro, J.L.G. | Cuadrado-Collados, Carlos | Gandara-Loe, Jesús | Silvestre-Albero, Joaquín | Monte Muñoz de la Peña, Francisco del |
Research Group/s: | Materiales Avanzados |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Keywords: | Hydrogen-bond | Supramolecular hydrogels | 3D carbonaceous architectures | BCNO nanocrystals | CO2/CH4 adsorption ratio |
Knowledge Area: | Química Inorgánica |
Issue Date: | Aug-2018 |
Publisher: | Elsevier |
Citation: | Carbon. 2018, 134: 470-479. doi:10.1016/j.carbon.2018.03.066 |
Abstract: | Oxygen-enriched boron carbonitrides – known as boron carbon oxinitrides, BCNOs – have exhibited remarkable properties with numerous works reporting on their performance as phosphors and some few ones as H2-adsorbents. However, the study of BCNOs capability for CO2 uptaking has yet to be achieved. Herein, we have designed a simple process for preparation of freestanding three-dimensional (3D) BCNO structures via pyrolysis of supramolecular gels formed by H-bonding of melamine, boric acid and glucose. The 3D porous materials obtained by pyrolysis of supramolecular gels containing glucose exhibited a seaweed-like 3D structure formed by BCNO nanocrystals embedded within a carbonaceous matrix with a certain content of amorphous hydrogenated carbon. The particularly narrow porosities exhibited by these samples proved effective for CO2 adsorption with uptakes of up to ca. 1.8 mmol/g at 25 °C. More interestingly, those samples prepared with high concentration of glucose behaved as molecular sieves and exhibited an excellent performance for CO2–CH4 separation, especially at low pressures with kH values of up to 1.04∙103. |
Sponsor: | This work was supported by MINECO/FEDER (Project Numbers MAT2015-68639-R and MAT2016-80285-P). N. López-Salas also acknowledges MINECO/FEDER for a FPI research contract. C. Cuadrado-Collados and J. Gandara-Loe acknowledge UA and GV (GRISOLIAP/2016/089) for their respective research contracts. |
URI: | http://hdl.handle.net/10045/74892 |
ISSN: | 0008-6223 (Print) | 1873-3891 (Online) |
DOI: | 10.1016/j.carbon.2018.03.066 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2018 Elsevier Ltd. |
Peer Review: | si |
Publisher version: | https://doi.org/10.1016/j.carbon.2018.03.066 |
Appears in Collections: | INV - LMA - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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2018_Lopez-Salas_etal_Carbon_final.pdf | Versión final (acceso restringido) | 2,75 MB | Adobe PDF | Open Request a copy |
2018_Lopez-Salas_etal_Carbon_accepted.pdf | Accepted Manuscript (acceso abierto) | 16,13 MB | Adobe PDF | Open Preview |
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