Phase behavior of Pt–Cu nanoparticles with different architecture upon their thermal treatment


Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

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.

Авторлар туралы

S. Belenov

Southern Federal University

Хат алмасуға жауапты Автор.
Email: serg1986chem@mail.ru
Ресей, Rostov-on-Don, 344090

V. Volochaev

Southern Federal University

Email: serg1986chem@mail.ru
Ресей, Rostov-on-Don, 344090

V. Pryadchenko

Southern Federal University

Email: serg1986chem@mail.ru
Ресей, Rostov-on-Don, 344090

V. Srabionyan

Southern Federal University

Email: serg1986chem@mail.ru
Ресей, Rostov-on-Don, 344090

D. Shemet

Southern Federal University

Email: serg1986chem@mail.ru
Ресей, Rostov-on-Don, 344090

N. Tabachkova

MISiS National Research Technological University

Email: serg1986chem@mail.ru
Ресей, Moscow, 119991

V. Guterman

Southern Federal University

Email: serg1986chem@mail.ru
Ресей, Rostov-on-Don, 344090

Қосымша файлдар

Қосымша файлдар
Әрекет
1. JATS XML

© Pleiades Publishing, Ltd., 2017