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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