Thermal properties of Ag@Ni core-shell nanoparticles

0524057 - ÚFM 2021 RIV GB eng J - Journal Article
Vykoukal, V. - Zelenka, F. - Buršík, Jiří - Káňa, Tomáš - Kroupa, Aleš - Pinkas, J.
Thermal properties of Ag@Ni core-shell nanoparticles.
Calphad - Computer Coupling of Phase Diagrams and Thermochemistry. Roč. 69, JUN (2020), č. článku 101741. ISSN 0364-5916. E-ISSN 1873-2984
R&D Projects: GA MŠMT(CZ) LQ1601; GA ČR(CZ) GA17-15405S
Institutional support: RVO:68081723
Keywords : Core-shell * Melting point depression * Nanoparticles * Nanoparticles * Phase diagram * Transmission electron microscopy
OECD category: Physical chemistry
Impact factor: 2.017, year: 2020
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0364591620300067?via%3Dihub

We synthesized Ag@Ni core-shell nanoparticles by the solvothermal hot injection method and characterized them as for their shape and size by dynamic light scattering (DLS), small-angle X-ray scattering (SAXS), and transmission electron microscopy (TEM). We previously demonstrated their core-shell structure by scanning transmission electron microscopy with energy dispersive spectroscopy (STEM-EDS). The silver/nickel phase diagram was calculated by the CALPHAD method, and the melting points of 10, 15, and 20 nm silver nanoparticles were predicted at 930.2, 940.7, and 946.0 °C, respectively. We took advantage of the nickel shell to avoid silver sintering and to confirm the calculated melting point depression (MPD). The results obtained from the differential scanning calorimetry (DSC) experiments revealed the melting points of 11–15 nm nanoparticles at 944–949 °C in agreement with calculated values.
Permanent Link: http://hdl.handle.net/11104/0309680