A green and fast approach to nanoporous carbons with tuned porosity: UV-assisted condensation of organic compounds at room temperature
| Autor: | María C. Fernández de Córdoba, Conchi O. Ania, Mohamed Zaier, Lavinia Balan |
|---|---|
| Přispěvatelé: | Département de Photochimie Générale, Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche sur la Matière Divisée (CRMD), Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), The City College of New York (CCNY), City University of New York [New York] (CUNY), Instituto Nacional del Carbon (INCAR), Instituto Nacional del Carbón, Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université d'Orléans (UO), European Commission, Ministerio de Economía y Competitividad (España), Université d'Orléans (UO)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Chemistry(all) 02 engineering and technology 010402 general chemistry 01 natural sciences 7. Clean energy Organic compound Catalysis Organic chemistry General Materials Science Porosity ComputingMilieux_MISCELLANEOUS chemistry.chemical_classification Aqueous solution Nanoporous [SDE.IE]Environmental Sciences/Environmental Engineering Condensation General Chemistry Polymer [CHIM.CATA]Chemical Sciences/Catalysis [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical engineering 13. Climate action 0210 nano-technology Mesoporous material |
| Zdroj: | Carbon Carbon, Elsevier, 2017, 116, pp.264-274. ⟨10.1016/j.carbon.2017.01.088⟩ Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0008-6223 |
| DOI: | 10.1016/j.carbon.2017.01.088⟩ |
| Popis: | This work reports a green and fast approach to the synthesis of nanoporous carbon materials based on the UV-assisted condensation of organic compounds as precursors. This new approach offers several improvements over the classical soft template and sol-gel routes for the synthesis of materials: versatility of organic precursors, shorter synthesis time, and ambient conditions. Owing to the specificity of the UV-assisted reactions mechanisms, organic compounds of varied chemical composition can be used as precursors in the preparation of nanoporous carbons with tuned porous features. The method consisted in the exposure of an aqueous solution of the organic precursors to UV light for 60 min at room temperature in the absence of a catalyst, allowing an outstanding shortening of the synthesis time compared to sol-gel routes. Furthermore, UV irradiation promoted the cross-linking of the polymer chains of precursors at room temperature, as opposed to classical methods that require an additional step at mild/high temperatures. By changing the chemistry of the organic compound used as precursor, it was possible to modulate the surface area (from 10 to 720 m2 g−1) and the porosity of the synthesized carbons within the micro-/mesopore range. The obtained carbons also presented varied morphology depending on the precursor, from dense aggregates to ordered hexagonal arrangements of nanometric dimensions. This study was supported by the European Research Council through a ERC-Consolidator Grant (648161-PHOROSOL) and the Spanish MINECO (grant CTM2014-56770-R). |
| Databáze: | OpenAIRE |
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