Melamine-derived carbon sponges for oil-water separation
| Autor: | Dominique Baillis, Sylvie Le Floch, Nicholas Blanchard, Philippe Chaudet, Yasushi Soneda, Alfonso San-Miguel, Laurence Reinert, Laurent Duclaux, Stella M. M. Ramos, Aude Stolz, J. Tuaillon-Combes |
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| Přispěvatelé: | Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie Moléculaire et Environnement (LCME), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), National Institute of Advanced Industrial Science and Technology (AIST), Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Thermogravimetric analysis
Materials science chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound [CHIM]Chemical Sciences General Materials Science Fourier transform infrared spectroscopy Composite material Porosity Melamine foam ComputingMilieux_MISCELLANEOUS Carbonization General Chemistry 021001 nanoscience & nanotechnology 6. Clean water 0104 chemical sciences Chemical engineering chemistry [SDE]Environmental Sciences 0210 nano-technology Melamine Pyrolysis Carbon |
| Zdroj: | Carbon Carbon, Elsevier, 2016, 107, pp.198-208. ⟨10.1016/j.carbon.2016.05.059⟩ |
| ISSN: | 0008-6223 |
| DOI: | 10.1016/j.carbon.2016.05.059⟩ |
| Popis: | The elaboration and characterization of hydrophobic melamine-based sponges are presented. Sponges were obtained by single-step carbonization of commercial melamine foam having a 3D interconnected network. We show that optimized sponges can be elaborated from a simple pyrolysis treatment with rather low temperatures of 500–600 °C. These materials exhibited excellent absorption capacities (they absorbed 90 to 200 times their own weight), a very high porosity of 99.5%, a low density around 7 mg/cm3 and water contact angles ranging from 120° to 140° close to superhydrophobicity. The relationship between hydrophobicity and physicochemical evolution on heat treatment (carbonization process, diffusion of additives, porosity evolution) was studied in detail. The as-prepared carbon sponges are compressible up to 80% with a Young’s modulus ranging from 0.58 kPa to 0.80 kPa, and keep part of their elastic properties after a hundred compression-decompression cycles. The carbonized sponges were characterized by thermogravimetric analysis (TGA), infra-red spectroscopy (FTIR), Raman spectroscopy, elemental analysis (EA), X-ray photoelectron spectroscopy (XPS) and scanning electronic microscopy (SEM). These characteristics make these materials promising absorbents for water depollution: oil-spill clean-ups or removal of oils and organic solvents from water, especially for the recovering of the pollutant by simple squeezing of the absorbent. |
| Databáze: | OpenAIRE |
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