Swelling of Thin Graphene Oxide Films Studied by in Situ Neutron Reflectivity
| العنوان: | Swelling of Thin Graphene Oxide Films Studied by in Situ Neutron Reflectivity |
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| المؤلفون: | Aleksandr V. Talyzin, Alexei Vorobiev, Jinhua Sun, Alexey Klechikov |
| المصدر: | The Journal of Physical Chemistry C. 122:13106-13116 |
| بيانات النشر: | American Chemical Society (ACS), 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Materials science, Inorganic chemistry, Oxide, 02 engineering and technology, 010402 general chemistry, Physical Chemistry, complex mixtures, 01 natural sciences, law.invention, swelling, chemistry.chemical_compound, law, Physical and Theoretical Chemistry, Acetonitrile, Fysikalisk kemi, Graphene, graphene, Sorption, Condensed Matter Physics, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Solvent, General Energy, Membrane, chemistry, graphene oxide, Gravimetric analysis, Dimethylformamide, 0210 nano-technology, Den kondenserade materiens fysik |
| الوصف: | Permeation of multilayered graphene oxide (GO) membranes by polar solvents is known to correlate with their swelling properties and amount of sorbed solvent. However, quantitative estimation of sorption using standard (e.g., gravimetric) methods is technically challenging for few nanometers thick GO membranes/films exposed to solvent vapors. Neutron reflectivity (NR) was used here to evaluate the amount of solvents intercalated into the film which consists of only ∼31.5 layers of GO. Analysis of NR data recorded from the GO film exposed to vapors of polar solvents provides information about change of film thickness due to swelling, amount of intercalated solvent, and selectivity in sorption of solvents from binary mixtures. A quantitative study of GO film sorption was performed for D2O, d-methanol, ethanol, dimethyl sulfoxide (DMSO), acetonitrile, dimethylformamide (DMF), and acetone. Using isotopic contrast, we estimated selectivity in sorption of ethanol/d-methanol mixtures by the GO film. Estimation of sorption selectivity was also performed for D2O/DMF, D2O/DMSO, and D2O/acetonitrile binary mixtures. Sorption of polar solvents was compared for the thin GO film, micrometer thick free standing GO membranes, and graphite oxide powders. |
| وصف الملف: | application/pdf |
| تدمد: | 1932-7455 1932-7447 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::017cdbef923c3d8180553a7ab99bb596 https://doi.org/10.1021/acs.jpcc.8b01616 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....017cdbef923c3d8180553a7ab99bb596 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 19327455 19327447 |
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