Phase behavior of Pt–Cu nanoparticles with different architecture upon their thermal treatment
- Авторы: Belenov S.V.1, Volochaev V.A.1, Pryadchenko V.V.1, Srabionyan V.V.1, Shemet D.B.1, Tabachkova N.Y.2, Guterman V.E.1
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Учреждения:
- Southern Federal University
- MISiS National Research Technological University
- Выпуск: Том 12, № 3-4 (2017)
- Страницы: 147-155
- Раздел: Article
- URL: https://journals.rcsi.science/2635-1676/article/view/219927
- DOI: https://doi.org/10.1134/S1995078017020033
- ID: 219927
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Аннотация
Using the methods of powder X-ray diffraction, transmission electron microscopy, and EXAFS spectroscopy, the phase behavior of bimetallic Pt–Cu nanoparticles with different architecture that are deposited on a highly disperse carbon carrier has been investigated during their thermal treatment in inert atmosphere. It is established that Pt–Cu nanoparticles with a Cu-core–Pt-shell structure rearrange into nanoparticles with a Pt–Cu solid-solution structure in the temperature range from 280 to 300°C. This transformation is accompanied by a sharp change in the unit-cell parameter. Such a change in the crystal lattice parameter does not occur during the thermal treatment of material with similar composition containing Pt–Cu nanoparticles with a solid-solution structure. The results can be used in elucidating the structure of Pt–M/C materials with different nanoparticle architectures.
Об авторах
S. Belenov
Southern Federal University
Автор, ответственный за переписку.
Email: serg1986chem@mail.ru
Россия, Rostov-on-Don, 344090
V. Volochaev
Southern Federal University
Email: serg1986chem@mail.ru
Россия, Rostov-on-Don, 344090
V. Pryadchenko
Southern Federal University
Email: serg1986chem@mail.ru
Россия, Rostov-on-Don, 344090
V. Srabionyan
Southern Federal University
Email: serg1986chem@mail.ru
Россия, Rostov-on-Don, 344090
D. Shemet
Southern Federal University
Email: serg1986chem@mail.ru
Россия, Rostov-on-Don, 344090
N. Tabachkova
MISiS National Research Technological University
Email: serg1986chem@mail.ru
Россия, Moscow, 119991
V. Guterman
Southern Federal University
Email: serg1986chem@mail.ru
Россия, Rostov-on-Don, 344090
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