Synthesis and Study of Some Physicochemical Features of Co-Pt Nanostructured System | Sciact - CRIS-system of Boreskov Institute of Catalysis

Synthesis and Study of Some Physicochemical Features of Co-Pt Nanostructured System Full article

Conference

International Scientific Forestry Forum 2023: Forest Ecosystems as Global Resource of the Biosphere: Calls, Threats, Solutions (Forestry Forum 2023)
23-25 Oct 2023 , Воронеж

Journal

BIO web of conferences
ISSN: 2273-1709 , E-ISSN: 2117-4458

Output data

Year: 2024, Volume: 93, Article number : 04012, Pages count : 6 DOI: 10.1051/bioconf/20249304012

Authors

Zakharov Nikita ¹ , Tikhonova Irina ¹ , Popova Anna ¹ , Pugachev Valery ¹ , Dodonov Vadim ¹ , Prosvirin Igor ² , Krasheninin Viktor ¹ , Zakharov Yuri ¹

Affiliations

1	Federal Research Center of Coal and Coal Chemistry of SB RAS, 650000, Kemerovo
2	Federal Research Center Boreskov Institute of Catalysis of SB RAS, 630090, Novosibirsk

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

FWEZ-2021-0009 (121031500211-9)(075-00485-21-00)

In the work by methods of XRD, TEM, SAED, XPS combined with mass-spectrometry of gaseous products, SAXS, and elemental analysis of samples the phase compositions and morphology of particles of nanostructured Co-Pt system synthesized by the method of reduction of hydrazine-hydrate aqueous solutions of precursors were studied (in the region rich in Pt for the first time). It was found that in the composition range up to ≈ 60 at. % Co. XRD-analysis of synthesized samples fixes as the only FCC phase of solid solution of Co in Pt, with the established upper limit of solubility %18±1 at. At the content of Co above the limit, along with it, the X-ray diffraction unregistered phases with the content of Co above the limit in solid solution are also formed. Their presence was confirmed by the SAXS method, and their metallic nature (not oxide-hydroxide) nature follows from the results of XRD, SAED. When FCC phase formed metal reduction process proceeded directly without cobalt hydroxides forming. According to results of XPS with the Ar-etching of samples there were internal platinum-rich sub-regions in Co-Pt nanoalloys.

Zakharov N. , Tikhonova I. , Popova A. , Pugachev V. , Dodonov V. , Prosvirin I. , Krasheninin V. , Zakharov Y.
Synthesis and Study of Some Physicochemical Features of Co-Pt Nanostructured System
BIO web of conferences. 2024. V.93. 04012 :1-6. DOI: 10.1051/bioconf/20249304012 РИНЦ OpenAlex

Published online:

Mar 20, 2024

Elibrary:	66473743
OpenAlex:	W4393007607

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