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The effect of the temperature of graphene oxide reduction on low-temperature sorption of ⁴He
Репозиторій DSpace/Manakin
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The effect of the temperature of graphene oxide reduction on low-temperature sorption of ⁴He
Тема:
Наноструктуры при низких температурах
Інший ID:
PACS: 65.80.+n
Посилання:
The effect of the temperature of graphene oxide reduction on low-temperature sorption of ⁴He / A.V. Dolbin, M.V. Khlistyuck, V.B. Esel'son, V.G. Gavrilko, N.A.Vinnikov, R.M. Basnukaeva, I. Maluenda, W.K. Maser, A.M. Benito // Физика низких температур. — 2016. — Т. 42, № 1. — С. 75–78. — Бібліогр.: 23 назв. — англ.
Підтримка:
Financial support from Spanish Ministry MINECO and
the European Regional Development Fund (project
ENE2013-48816-C5-5-R), the Regional Government of Aragon
and the European Social Fund DGA-ESF (project T66)
and Targeted Comprehensive Fundamental Research Program
of NASU (project 6/15-Н) is gratefully acknowledged.
Дата:
2016
Переглядів:
638
Завантажень:
447
Анотація:
The sorption of⁴He by graphene oxide powders thermally reduced at T = 200, 300, 500, 700, 900 ºC has been
investigated in the interval 1.5–290 K. The measured dependence of the quantity of sorbed helium upon the reduction
temperature shows up as a nonmonotonic curve. The highest quantities of helium were sorbed by the
samples reduced at T = 300 and 900 ºC. It is assumed that the thermal reduction of graphite oxide by heating it to
300 ºC causes evaporation of the water intercalated in the spacings of the carbon layers, this results in exfoliation
of the graphene planes, which enhances the sorptive capacity. Heating the samples to 900 ºC generates numerous
defects in the carbon planes, as a result, the interlayer spacings become accessible for sorption, which enhances
the sorptive capacity.
