Abstract:
The catalytic activity of Pt clusters is dependent not only on the nanoparticle size and its composition, but also on its internal structure. To determine the real structure of the nanoparticles used in catalysis, the boundaries of the thermal structure stability of Pt clusters to 8.0 nm in diameter interacting with carbon substrates of two types: a fixed α-graphite plane and a mobile substrate with the diamond structure. The effect of a substrate on the processes melting of Pt nanoclusters is estimated. The role of the cooling rate in the formation of the internal structure of Pt clusters during crystallization is studied. The regularities obtained in the case of “free” Pt clusters and Pt clusters on a substrate are compared. It is concluded that platinum nanoparticles with diameter D⩽ 4.0 nm disposed on a carbon substrate conserve the initial fcc structure during cooling.
Citation:
V. S. Baidyshev, Yu. Ya. Gafner, S. L. Gafner, L. V. Redel', “Thermal stability of Pt nanoclusters interacting to carbon sublattice”, Fizika Tverdogo Tela, 59:12 (2017), 2483–2489; Phys. Solid State, 59:12 (2017), 2512–2518
\Bibitem{BaiGafGaf17}
\by V.~S.~Baidyshev, Yu.~Ya.~Gafner, S.~L.~Gafner, L.~V.~Redel'
\paper Thermal stability of Pt nanoclusters interacting to carbon sublattice
\jour Fizika Tverdogo Tela
\yr 2017
\vol 59
\issue 12
\pages 2483--2489
\mathnet{http://mi.mathnet.ru/ftt9379}
\crossref{https://doi.org/10.21883/FTT.2017.12.45252.154}
\elib{https://elibrary.ru/item.asp?id=30685661}
\transl
\jour Phys. Solid State
\yr 2017
\vol 59
\issue 12
\pages 2512--2518
\crossref{https://doi.org/10.1134/S1063783417120071}
Linking options:
https://www.mathnet.ru/eng/ftt9379
https://www.mathnet.ru/eng/ftt/v59/i12/p2483
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