Nitrogen Adsorption on Graphene Sponges Synthesized by Annealing a Mixture of Nickel and Carbon Powders
Latvian Journal of Physics and Technical Sciences 2017
V. Grehov, Jānis Kalnačs, Anatolijs Mišņovs, K. Kundziņš

Adsorption by graphene sponge (GS) manufactured by annealing nickel-carbon powder mixture in inert atmosphere has been studied. By determining the specific surface area (SSA) for the GS sample, it has been found that Brunauer, Emmett, Teller method (BET) of approximation of experimental isotherms gives wrong results in the pressure range of 0.025-0.12 because adsorption in this pressure region is affected by walls of ampoule. Real SSA value has been found by subtracting pore effect method (SPE) or by BET approximation in a low range of relative pressure of 0.0004-0.002.


Atslēgas vārdi
BET approximation | graphene sponge | nitrogen adsorption | specific surface area
DOI
10.1515/lpts-2017-0025
Hipersaite
https://www.degruyter.com/view/j/lpts.2017.54.issue-4/lpts-2017-0025/lpts-2017-0025.xml

Grehov, V., Kalnačs, J., Mišņovs, A., Kundziņš, K. Nitrogen Adsorption on Graphene Sponges Synthesized by Annealing a Mixture of Nickel and Carbon Powders. Latvian Journal of Physics and Technical Sciences, 2017, Vol.54, Iss.4, 36.-48.lpp. ISSN 0868-8257. Pieejams: doi:10.1515/lpts-2017-0025

Publikācijas valoda
English (en)
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