Preparation of Porous Co-Pt Alloys for Catalytic Synthesis of Carbon Nanofibers Научная публикация
| Журнал |
Nanotechnology
ISSN: 0957-4484 , E-ISSN: 1361-6528 |
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| Вых. Данные | Год: 2020, Том: 31, Номер: 49, Номер статьи : 495604, Страниц : 11 DOI: 10.1088/1361-6528/abb430 | ||||||
| Ключевые слова | cobalt, platinum, porous nanoalloys, X-ray diffraction, alloy catalysts, carbon nanofibers | ||||||
| Авторы |
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| Организации |
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Информация о финансировании (2)
| 1 | Федеральное агентство научных организаций России | 0303-2016-0014 |
| 2 | Российский фонд фундаментальных исследований | 18-03-00777 |
Реферат:
A simple and convenient procedure for the production of porous Co-Pt nanoalloys to be used as catalysts for the synthesis of nanostructured carbon fibers (CNF) has been developed. The technique is based on the thermal decomposition of specially synthesized multicomponent precursors in a reducing atmosphere. A series of porous single-phase Co-Pt nanoalloys (10-75 at.% Pt) have been synthesized. The nanoalloys containing 75 and 50 at.% Pt were identified by the x-ray diffraction analysis as the intermetallics CoPt3 and CoPt, respectively. Within the region of 10-35 at.% Pt, the synthesized nanoalloys are represented by Co1-xPtx random solid solutions with face-centered cubic lattice. The alloys obtained are characterized by a porous structure consisting of assembled fragments with a size of 50-150 nm. These nanoalloys were tested in the catalytic chemical vapor deposition of the ethylene to CNF. A significant synergistic effect between Co and Pt in the synthesis of carbon nanomaterials was revealed. The yield of CNF (for 30 min reaction) for catalysts containing 25-35 at.% Pt was 30-38 g(CNF)/g(cat), whereas those for Co (100%) and Pt (100%) samples were as low as 5.6 and > 0.1 g(CNF)/g(cat), respectively. The produced carbon nanomaterial composed of fibers with a segmented structure was shown to be characterized by a rather high specific surface area (200-250 m2/g) and structural homogeneity.
Библиографическая ссылка:
Popov A.A.
, Shubin Y.V.
, Bauman Y.I.
, Plyusnin P.E.
, Mishakov I.V.
, Sharafutdinov M.R.
, Maximovskii E.A.
, Korenev S.V.
, Vedyagin A.A.
Preparation of Porous Co-Pt Alloys for Catalytic Synthesis of Carbon Nanofibers
Nanotechnology. 2020. V.31. N49. 495604 :1-11. DOI: 10.1088/1361-6528/abb430 WOS Scopus РИНЦ CAPlus PMID OpenAlex
Preparation of Porous Co-Pt Alloys for Catalytic Synthesis of Carbon Nanofibers
Nanotechnology. 2020. V.31. N49. 495604 :1-11. DOI: 10.1088/1361-6528/abb430 WOS Scopus РИНЦ CAPlus PMID OpenAlex
Даты:
| Поступила в редакцию: | 26 июн. 2020 г. |
| Принята к публикации: | 1 сент. 2020 г. |
| Опубликована online: | 28 сент. 2020 г. |
| Опубликована в печати: | 4 дек. 2020 г. |
Идентификаторы БД:
| Web of science: | WOS:000576359200001 |
| Scopus: | 2-s2.0-85092638143 |
| РИНЦ: | 45226594 |
| Chemical Abstracts: | 2020:2265693 |
| PMID (PubMed): | 32990267 |
| OpenAlex: | W3082644074 |