NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2018, 9 (4), P. 568–572
Formation mechanism of core-shell nanocrystals obtained via dehydration of coprecipitated hydroxides at hydrothermal conditions
O.V. Almjasheva – Saint-Petersburg Electrotechnical University “LETI”, Saint-Petersburg, 197376; Ioffe Institute, Saint-Petersburg, 194021, Russia; almjasheva@mail.ru
A. A. Krasilin – Ioffe Institute, Saint-Petersburg, 194021, Russia; ikrasilin@mail.ioffe.ru
V.V. Gusarov -Ioffe Institute, Saint-Petersburg, 194021, Russia; victor.v.gusarov@gmail.com
Here, we propose a formation mechanism for core-shell nanoparticles by self-organization in coprecipitated mixed hydroxides under hydrothermal conditions. A thermodynamic reason for this process is because of a decrease in the components’ solubilities together with an increase of structure’s dimension. As a particular example of such type of behavior, we investigate core-shell nanoparticle formation in the ZrO2–Y2O3–H2O system.
Keywords: core-shell nanoparticles, hydrothermal synthesis, multi-component systems, solid solution, zirconia, formation mechanism.
DOI 10.17586/2220-8054-2018-9-4-568-572
