The Effect of Reduction Temperature of Graphene Oxide on Low Temperature Hydrogen Sorption
| Authors | A.V. Dolbin1, V.B. Esel’son1, V.G. Gavrilko1, N.A. Vinnikov1, R.M. Basnukaeva1, M.V. Khlistuck1, W. Maser2, A. Benito2 |
| Affiliations | 1 B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47, Lenin Ave., 61103 Kharkov, Ukraine 2 Instituto de Carboquímica, 4 Miguel Luesma Castán, E-50018 Zaragoza, Spain |
| Е-mail | |
| Issue | Volume 7, Year 2015, Number 2 |
| Dates | Received 02 April 2015; published online 10 June 2015 |
| Citation | A.V. Dolbin, V.B. Esel’son, V.G. Gavrilko, et al., J. Nano- Electron. Phys. 7 No 2, 02008 (2015) |
| DOI | |
| PACS Number(s) | 68.43.Jk, 68.43.Mn |
| Keywords | Graphene oxide (2) , Thermal reduction, Hydrogen sorption. |
| Annotation | Sorption and subsequent desorption of hydrogen by graphene oxide powder which was thermally redu-ced at temperatures of 200, 300, 500, 700 and 900 °С were investigated in 9-290 K temperature interval. The resulting dependence of the quantity of adsorbed hydrogen on the reduction temperature had a nonmonotonic character. The maximum values of the quantity of sorbed hydrogen were observed for the samples reduced at temperatures of 300 and 900 °С. It was assumed that the increase in the sorption ability of the samples reduced at 300 °C is due to the disordering of the layered structure of graphene oxide by removing the intercalated water. Heat treatment at 900 °C also increased the sorption capacity of the sample due to the formation of multiple defects of carbon surfaces by removing oxygen-containing groups. |
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