Delsante Simona, Borzone Gabriella, Novakovic Rada, Piazza Daniele, Pigozzi Giancarlo, Janczak-Rusch Jolanta, Pilloni Martina, Ennas Guido
Department of Chemistry and Industrial Chemistry, Genoa University and Genoa Research Unit of the National Consortium of Materials Science and Technology (INSTM), Via Dodecaneso 31, I-16146 Genoa, Italy.
Phys Chem Chem Phys. 2015 Nov 14;17(42):28387-93. doi: 10.1039/c5cp02058a. Epub 2015 Jun 26.
Metallic silver, copper, and Ag-Cu nanoparticles (NPs) have been produced by a chemical reduction method. The obtained nanoparticles were characterized by powder X-ray diffraction (XRD) and transmission electron microscopy (TEM). A side-segregated configuration was observed for the one-pot synthesized Ag-Cu NPs, and the melting temperature depression of about 14 °C was found by differential scanning calorimetry (DSC). A comparison between the new experimental data, the literature data on Ag-Cu bimetallic NPs and the corresponding theoretical values obtained from the Ag-Cu nano-sized phase diagram was done, whereas the melting behaviour of Ag and Cu metal nanoparticles was discussed in the framework of the liquid layer model (LLM).
通过化学还原法制备了金属银、铜以及银铜纳米颗粒（NPs）。采用粉末X射线衍射（XRD）和透射电子显微镜（TEM）对所得纳米颗粒进行了表征。对于一锅法合成的银铜纳米颗粒，观察到了侧偏析构型，并且通过差示扫描量热法（DSC）发现其熔点降低了约14℃。将新的实验数据、银铜双金属纳米颗粒的文献数据以及从银铜纳米尺寸相图获得的相应理论值进行了比较，同时在液层模型（LLM）的框架内讨论了银和铜金属纳米颗粒的熔化行为。
