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Título

Sorption of 4He, H2, Ne, N2, CH4 and Kr impurities in graphene oxide at low temperatures. Quantum effects

Autor Dolbin, A.V.; Maser, Wolfgang K.; Benito, Ana M.
Palabras clave Graphene oxide
Glucose-reduced graphene oxide
Hydrazine-reduced graphene oxide
Gas impurities
Fecha de publicación 2013
EditorAmerican Institute of Physics
Citación Low Temperature Physics 39(12) : 1390- 1395 (2013)
ResumenSorption and the subsequent desorption of 4He, H2, Ne, N2, CH4, and Kr gas impurities by graphene oxide(GO), glucose-reduced GO (RGO-Gl) and hydrazine-reduced GO (RGO-Hz) powders have been investigated in the temperature interval 2¿290 K. It has been found that the sorptive capacity of the reduced sample RGO-Hz is three to six times higher than that of GO. The reduction of GO with glucose has only a slight effect on its sorptive properties. The temperature dependences of the diffusion coefficients of the GO, RGO-Gl and RGO-Hz samples have been obtained using the measured characteristic times of sorption. It is assumed that the tempera-ture dependences of the diffusion coefficients are determined by the competition of the thermally activated and tunneling mechanisms, the tunneling contribution being dominant at low temperatures.c2013 AIP Publishing LLC
Versión del editorhttp://dx.doi.org/10.1063/1.4830421
URI http://hdl.handle.net/10261/89558
DOI10.1063/1.4830421
Identificadoresdoi: 10.1063/1.4830421
issn: 1063-777X
e-issn: 1090-6517
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