Activated carbon materials with a rich surface chemistry prepared from L-cysteine amino acid
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Título: | Activated carbon materials with a rich surface chemistry prepared from L-cysteine amino acid |
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Autor/es: | Reljic, Snezana | Cuadrado-Collados, Carlos | Jardim, Erika de Oliveira | Farrando Pérez, Judit | Martinez-Escandell, Manuel | Silvestre-Albero, Joaquín |
Grupo/s de investigación o GITE: | Materiales Avanzados | Laboratorio de Nanotecnología Molecular (NANOMOL) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Activated carbon | Amino acids | Cysteine | Surface chemistry |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 19-mar-2022 |
Editor: | Elsevier |
Cita bibliográfica: | Fluid Phase Equilibria. 2022, 558: 113446. https://doi.org/10.1016/j.fluid.2022.113446 |
Resumen: | A series of activated carbon materials have been successfully prepared from a non-essential amino acid, such as L-cysteine. The synthesized carbons combine a widely developed porous structure (BET surface area up to 1000 m2/g) and a rich surface chemistry (mainly oxygen, nitrogen and sulphur functionalities). These surface functional groups are relatively stable even after a high temperature thermal treatment (O>N∼S). Experimental results show that these samples with a rich surface chemistry exhibit a significant improvement in their hydrophilic character. Although the role of the surface functional groups is less pronounced for the adsorption of non-polar molecules such as CO2, CH4 and C2H4, their adsorption at atmospheric pressure is to some extend conditioned by the characteristics of the adsorbent-adsorbate interactions. The synthesized carbons exhibit an excellent adsorption performance for CO2 (up to 3 mmol/g at 0°C). Furthermore, samples with a low activation degree exhibit molecular sieving properties with very promising CO2/CH4 (up to 4.5) and C2H4/CH4 (up to 6) selectivity ratios. These results anticipate that non-essential amino acids are a versatile platform to obtain carbon materials combining a tailored porous structure and rich multifunctional surface chemistry and with potential application for gas adsorption/separation processes. |
Patrocinador/es: | Authors would like to acknowledge financial support from the MINECO (Projects PID2019-108453GB-C21 and PCI2020-111968/ERANET-M/3D-Photocat) and NATO SPS program (Project G5683). |
URI: | http://hdl.handle.net/10045/122271 |
ISSN: | 0378-3812 (Print) | 1879-0224 (Online) |
DOI: | 10.1016/j.fluid.2022.113446 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.fluid.2022.113446 |
Aparece en las colecciones: | INV - LMA - Artículos de Revistas INV - NANOMOL - Artículos de Revistas |
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