Modelling of Reaction of Metallic Nanospheres with Gas

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F11%3A00363674" target="_blank" >RIV/68081723:_____/11:00363674 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.172-174.1028" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/SSP.172-174.1028</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.172-174.1028" target="_blank" >10.4028/www.scientific.net/SSP.172-174.1028</a>

Result language

angličtina

Original language name

Modelling of Reaction of Metallic Nanospheres with Gas

Original language description

The stoichiometric MpXq hollow nanospheres are produced by reaction of metallic M nanospheres with the gaseous X phase. In the first stage a sufficiently thick MpXq nanoshell on the metallic core of phase M is formed. During this stage high supersaturation of vacancies in the M core or very high hydrostatic stress in the M core, due to the misfit between the core and the nanoshell, are developed and provide favourable conditions for the hollow nucleation. The misfit is caused by the Kirkendall effect. Based on the application of the thermodynamic extremal principle a kinetic model of MpXq nanoshell formation is derived. The kinetics is driven by the change of the chemical energy due to reaction of M and X components, of the interface and surface energies, and of the elastic strain energy due to misfit strain of the whole system. The model is used for simulation of the Cu2O shell growth kinetics due to oxidation of a Cu nanosphere, and the results of simulations are discussed.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BJ - Thermodynamics

OECD FORD branch

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Project

<a href="/en/project/GAP108%2F10%2F1781" target="_blank" >GAP108/10/1781: The role of the stress state and vacancy supersaturation in formation of binary-phase hollow nanospheres</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Solid State Phenomena

ISSN

1012-0394

e-ISSN

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Volume of the periodical

172-174

Issue of the periodical within the volume

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Country of publishing house

CH - SWITZERLAND

Number of pages

10

Pages from-to

1028-1037

UT code for WoS article

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EID of the result in the Scopus database

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