Palladium Nanoparticles Supported on Nitrogen-Doped Carbon Nanofibers: Synthesis, Microstructure, Catalytic Properties, and Self-Sustained Oscillation Phenomena in Carbon Monoxide Oxidation
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
ChemCatChem
ISSN: 1867-3880
, E-ISSN: 1867-3899
|
| Вых. Данные |
Год: 2014,
Том: 6,
Номер: 7,
Страницы: 2115-2128
Страниц
: 14
DOI:
10.1002/cctc.201402108
|
| Ключевые слова |
Carbon nanofibers, nanoparticles, nitrogen, oscillation mechanisms, oxidation |
| Авторы |
Stonkus Olga A.
1,2
,
Kibis Lidiya S.
1,2
,
Podyacheva Olga Yu.
1
,
Slavinskaya Elena M.
1
,
Zaikovskii Vladimir I.
1,2
,
Hassan Abdelwahab H.
3,4
,
Hampel Silke
3
,
Leonhardt Albrecht
3
,
Ismagilov Zinfer R.
1,5
,
Noskov Aleksandr S.
1
,
Boronin Andrey I.
1,2
|
| Организации |
| 1 |
Boreskov Institute of Catalysis SB RAS, Pr. Lavrentieva, 5, Novosibirsk, 630090 (Russia)
|
| 2 |
Novosibirsk State University, Pirogova 2, Novosibirsk, 630090 (Russia)
|
| 3 |
Leibniz Institute of Solid State and Material Research Dresden, PF 270116, 01171 Dresden (Germany)
|
| 4 |
Department of Physics, Faculty of Science, Fayoum University, 63514 Fayoum (Egypt)
|
| 5 |
Institute of Coal Chemistry and Material Science SB RAS, Kemerovo, 650000 (Russia)
|
|
Информация о финансировании (3)
|
1
|
Российский фонд фундаментальных исследований
|
12-03-01091
|
|
2
|
Президиум СО РАН
|
75
|
|
3
|
Министерство образования и науки Российской Федерации
|
|
The oxidation of CO over Pd nanoparticles supported on carbon nanofibers (CNFs) and N-doped carbon nanofibers (N-CNFs) has been studied. Investigation by scanning transmission electron microscopy together with electron energy-loss spectroscopy revealed that Pd nanoparticles are located on the N-CNFs surface patches that have a high concentration of N atoms. The N-doping of CNFs was shown to change the electric conductivity of N-CNFs and redox properties of Pd, which thus determines the self-oscillatory behavior of the catalysts during CO oxidation, the type of oscillations, and the conditions of their generation. Mechanisms that underlie the effect of N in N-CNFs on the electronic state of Pd as well as the occurrence of two types of oscillation mechanisms—the known redox mechanism and the mechanism related to Pd intercalation into graphene layers—are discussed.