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Título: | Predicting the suitability of aqueous solutions of deep eutectic solvents for preparation of co-continuous porous carbons via spinodal decomposition processes |
Autor: | Posada, E.; López‐Salas, Nieves; Carriazo, Daniel CSIC ORCID; Muñoz-Márquez, Miguel Ángel CSIC ORCID; Ovín Ania, María Concepción CSIC ORCID ; Jiménez Riobóo, R. J. CSIC ORCID; Gutiérrez, María C. CSIC ORCID ; Ferrer, M. Luisa CSIC ORCID; Monte, Francisco del CSIC ORCID | Fecha de publicación: | oct-2017 | Editor: | Elsevier | Citación: | Carbon 123: 536-547 (2017) | Resumen: | Spinodal decomposition (SD) processes have proved effective for the synthesis of macro- and mesoporous materials. Despite the theoretical aspects of SD processes are well understood, finding the proper experimental conditions – both the components as well as the ratio in which they have to be combined – to attain co-continuous structures is a non-predictable and quite tedious process, typically based on trial and error. The challenge is finding a “tool” capable to predict the suitability of a particular starting solution to undergo SD processes. Here in, we used aqueous solutions of deep eutectic solvents (DESs) for the preparation via SD of co-continuous porous carbons, the morphologies of which ranged from spinodal to aggregates-of-particles-like just depending on dilution. Despite the starting DES/HO binary mixture was macroscopically homogeneous, Brillouin spectroscopy revealed the occurrence of certain nanostructural rearrangements within a dilution range that coincided with that used for preparation of carbons with morphologies transitioning from spinodal to aggregates-of-particles-like. Moreover, carbons exhibited a noticeable degree of heteroatom co-doping – e.g. N and P – and proved particularly effective for CO capture with adsorptions of up to 4.7 mmol/g at 0 °C and 760 mbar. | Versión del editor: | https://doi.org/10.1016/j.carbon.2017.07.083 | URI: | http://hdl.handle.net/10261/159261 | DOI: | 10.1016/j.carbon.2017.07.083 | ISSN: | 0008-6223 |
Aparece en las colecciones: | (INCAR) Artículos (ICMM) Artículos |
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