Synthesis and thermodynamics of Ag–Cu nanoparticles

Abstract

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).

The Antibacterial and Antifungal Textile Properties Functionalized by Bimetallic Nanoparticles of Ag/Cu with Different Structures

“…However, only limited data on the possible antimicrobial and antifungal activity of textiles modified by combination of silver and copper in the form of bimetallic nanoparticles as well as ionic species are available [59]. Moreover, although the preparation methods of bimetallic nanoparticles of Ag/Cu are welldescribed in the literature [60][61][62][63][64][65], then the antimicrobial properties of those particles were mentioned in only a few papers [66][67][68]. Additionally, one of the scientific challenges is how to produce antimicrobial textiles in easy and cheap way to apply them in facilities with a high risk of infection by pathogens (mainly hospitals facilities).…”

Phase Diagram of Binary Alloy Nanoparticles under High Pressure

“…Application of this model to pure metallic nanoparticles has been validated experimentally and theoretically [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. The validity of this model has also been confirmed through phase diagram studies of various alloy nanoparticle systems (Ag-Au [ 6 , 8 , 20 , 21 , 22 ], Ag-Co [ 23 ], Ag-Cu [ 24 , 25 , 26 ], Ag-Sn [ 9 , 27 , 28 , 29 , 30 ], Au-Cu [ 31 ], Au-Pt [ 32 ], Bi-Cd [ 33 ], Bi-Sn [ 34 , 35 ], Cu-Ni [ 36 , 37 , 38 , 39 , 40 , 41 ], Cu-Pt [ 42 ], In-Sb [ 43 ], Ni-Sn [ 44 ], Si-Ge [ 45 , 46 ], etc.). This model has been extended to phase diagram studies on ceramic nanoparticles [ 47 , 48 , 49 , 50 ] and aerosol nanoparticles [ 51 ].…”

“…During the last several decades, computational modeling of phase diagrams using the CALPHAD (CALculation of PHAse Diagrams) method has been applied to various systems under extreme conditions of small particles and high pressures [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 ...…”

Thermal properties of Ag@Ni core-shell nanoparticles

“…Using the ab-initio results, we can calculate the influence of the particle size on the depression of melting and invariant temperatures for more complex systems than are those studied in Ref. [15][16][17][18][19][20][21][22][23][24].…”

“…Changes in phase transformation temperatures as a function of particle size could be modeled by the CALPHAD method [12][13][14], and these predictions can be verified by thermoanalytical measurements. Such studies has been done for several simple nanosystems, for instance AgSn [15,16], AgSnCu [17,18], CuNi [19], AgCu [20,21], BiSn [22,23], InSn [22], PbSn [22], and BiPb [24] nanoalloys.…”