| SOPOUŠEK, Jiří, Ondřej ZOBAČ, Jiří BURŠÍK, Pavla ROUPCOVÁ, Vít VYKOUKAL, Pavel BROŽ, Jiří PINKAS and Jan VŘEŠŤÁL. Heat-induced spinodal decomposition of Ag–Cu nanoparticles. PHYSICAL CHEMISTRY CHEMICAL PHYSICS. Royal Society of Chemistry, 2015, vol. 17, No 42, p. 28277-28285. ISSN 1463-9076. Available from: https://dx.doi.org/10.1039/c5cp00198f. |
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@article{1308633,
author = {Sopoušek, Jiří and Zobač, Ondřej and Buršík, Jiří and Roupcová, Pavla and Vykoukal, Vít and Brož, Pavel and Pinkas, Jiří and Vřešťál, Jan},
article_number = {42},
doi = {http://dx.doi.org/10.1039/c5cp00198f},
keywords = {Nanoparticle synthesis; alloy; CALPHAD; XRD},
language = {eng},
issn = {1463-9076},
journal = {PHYSICAL CHEMISTRY CHEMICAL PHYSICS},
note = {Opraveno},
title = {Heat-induced spinodal decomposition of Ag–Cu nanoparticles},
url = {http://pubs.rsc.org/en/content/articlepdf/2015/cp/c5cp00198f},
volume = {17},
year = {2015}
}
TY - JOUR
ID - 1308633
AU - Sopoušek, Jiří - Zobač, Ondřej - Buršík, Jiří - Roupcová, Pavla - Vykoukal, Vít - Brož, Pavel - Pinkas, Jiří - Vřešťál, Jan
PY - 2015
TI - Heat-induced spinodal decomposition of Ag–Cu nanoparticles
JF - PHYSICAL CHEMISTRY CHEMICAL PHYSICS
VL - 17
IS - 42
SP - 28277-28285
EP - 28277-28285
PB - Royal Society of Chemistry
SN - 14639076
N1 - Opraveno
KW - Nanoparticle synthesis
KW - alloy
KW - CALPHAD
KW - XRD
UR - http://pubs.rsc.org/en/content/articlepdf/2015/cp/c5cp00198f
L2 - http://pubs.rsc.org/en/content/articlepdf/2015/cp/c5cp00198f
N2 - Solvothermal synthesis was used for Ag–Cu nanoparticle (NP) preparation from metallo-organic precursors. The detailed NP characterization was performed to obtain information about nanoparticle microstructure and both phase and chemical compositions. The resulting nanoparticles exhibited chemical composition inside a FCC_Ag + FCC_Cu two-phase region. The microstructure study was performed by various methods of electron microscopy including high-resolution transmission electron microscopy (HRTEM) at an atomic scale. The HRTEM and X-ray diffraction studies showed that the prepared nanoparticles form the face centred cubic (FCC) crystal lattice where the silver atoms are randomly mixed with copper. The CALPHAD approach was used for predicting the phase diagram of the Ag–Cu system in both macro- and nano-scales. The predicted spinodal decomposition of the metastable Ag–Cu nanoparticles was experimentally induced by heating on an X-ray powder diffractometer (HT XRD). The nucleation of the Cu-rich phase was detected and its growth was studied. Changes in the Ag-rich phase were observed in situ by X-ray diffraction under vacuum. The heat treatment was conducted at different maximum temperatures up to 450 °C and the resulting particle product was analysed. The experiments were complemented by differential scanning calorimetry (DSC) measurements up to liquidus temperature. The start temperatures of the spinodal phase transformation and particle aggregation were evaluated.
ER -
SOPOUŠEK, Jiří, Ondřej ZOBAČ, Jiří BURŠÍK, Pavla ROUPCOVÁ, Vít VYKOUKAL, Pavel BROŽ, Jiří PINKAS and Jan VŘEŠŤÁL. Heat-induced spinodal decomposition of Ag–Cu nanoparticles. \textit{PHYSICAL CHEMISTRY CHEMICAL PHYSICS}. Royal Society of Chemistry, 2015, vol.~17, No~42, p.~28277-28285. ISSN~1463-9076. Available from: https://dx.doi.org/10.1039/c5cp00198f.
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