Investigation of the Hydrogen Capacity of Composites Based on ZnOCu
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Переводная
|
| Конференция |
19th Conference on Application of Neutron Scattering for Condensed Matter Investigations
11-15 сент. 2006
,
Obninsk
|
| Журнал |
Crystallography Reports
ISSN: 1063-7745
, E-ISSN: 1562-689X
|
| Вых. Данные |
Год: 2007,
Том: 52,
Номер: 3,
Страницы: 474-478
Страниц
: 5
DOI:
10.1134/S1063774507030248
|
| Авторы |
Trunov V.A.
1
,
Lebedev V.T.
1
,
Sokolov A.E.
1
,
Grushko Y.S.
1
,
Török G.
2
,
van den Heuvel J.C.
3
,
Batyrev E.D.
3
,
Yurieva T.M.
4
,
Plyasova L.M.
4
|
| Организации |
| 1 |
Petersburg Nuclear Physics Institute, Russian Academy of Sciences, Gatchina, Leningradskaya oblast, 188300 Russia
|
| 2 |
Research Institute for Solid State Physics and Optics, Konkoly-Thege ut. 29–33, POB-49 Budapest, 1525 Hungary
|
| 3 |
Department of Chemical Engineering, University of Amsterdam, Nieuwe Achtergracht 166,1018 WV Amsterdam, Netherlands
|
| 4 |
Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences,pr. Akademika Lavrent’eva 5, Novosibirsk, 630090 Russia
|
|
Информация о финансировании (1)
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1
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Региональный общественный Фонд содействия отечественной науке
|
|
The composites ZnOCuH(D) saturated with hydrogen (deuterium) to a content of ∼1 wt % are investigated by the neutron scattering methods. Upon cooling of the samples (the ZnO matrix containing Cu crystals ∼10 nm in size) from 300 to 4 K, hydrogen (deuterium) is condensed on the cluster surface and penetrates inside the clusters in which the atomic hydrogen content with respect to copper can be as high as 30% at 20 K. Simultaneously, hydrogen fills nanopores of the ZnO matrix. It is revealed that, at temperatures of 90–300 K, approximately one-third of the hydrogen amount participates in the fast diffusion (the diffusion constant is approximately equal to 8 × 10−5 cm2/s) and the other two-thirds are immobilized. At 20 K, the fraction of mobile hydrogen decreases to ∼10%. An analysis of the results obtained demonstrates that the energy barriers retaining hydrogen in defect regions are relatively low.