The effect of graphene oxide reduction temperature on the kinetics of low-temperature sorption of hydrogen
| Autor: | Alexander V. Dolbin, N. A. Vinnikov, Ana M. Benito, R. M. Basnukaeva, M. V. Khlistuck, V. G. Gavrilko, Wolfgang K. Maser, V. B. Esel'son |
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| Přispěvatelé: | National Academy of Sciences of Ukraine, Dolbin, A. V. [0000-0001-8631-505], Vinnikov, N. A. [0000-0001-8934-6478], Gavrilko, V. G. [0000-0003-1351-5145], Basnukaeva, R. M. [0000-0003-4706-3837], Khlistyuck, M. V. [0000-0003-4244-2870], Maser, Wolfgang K. [0000-0003-4253-0758], Benito, Ana M. [0000-0002-8654-7386], Dolbin, A. V., Vinnikov, N. A., Gavrilko, V. G., Basnukaeva, R. M., Khlistyuck, M. V., Maser, Wolfgang K., Benito, Ana M. |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Hydrogen Graphene Oxide General Physics and Astronomy chemistry.chemical_element Graphite oxide Sorption Activation energy Atmospheric temperature range law.invention chemistry.chemical_compound chemistry Chemical engineering law Thermal reduction Desorption Kinetics of hydrogen sorption Graphene oxide |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | 5 Figuras.- 2 Tablas.- This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Low Temp. Phys.45, 422 (2019) and may be found at http://dx.doi.org/10.1063/1.5093523 The effect of thermal reduction of graphene oxide on the hydrogen sorption and desorption kinetics was studied by temperature-programmed desorption in the 7–120 K temperature range. The heat treatment of graphene oxide samples resulted in a decrease in the activation energy for hydrogen diffusion by more than an order of magnitude (by a factor of 12–13) compared with the initial graphite oxide. This change in the activation energy is, most likely, caused by exfoliation (loosening) of the graphite oxide carbon sheets upon the thermal removal of intercalated water, which changes the sorption character by decreasing the influence of the opposite walls in the interlayer spaces. The authors are grateful to Prof. A.I. Prokhvatilov for the fruitful discussion of the results of the study, and to the National Academy of Sciences of Ukraine for the financial support within the framework of the program “Fundamental Problems of the Development of New Nanomaterials and Nanotechnologies” (Project No. 0115U001397). |
| Databáze: | OpenAIRE |
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