Bi-phase dispersible Cu-ZnO hybrid nanoparticles were synthesized by one-pot non-aqueous nanoemulsion with the use of poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEO-PPO-PEO) as the surfactant. The transmission electron microscopy (TEM) and X-ray diffraction (XRD) show high crystallinity of the Cu-ZnO hybrid nanoparticles and an average particle size of ~19.4...

The interaction between azurin from Pseudomonas aeruginosa and Ag(I), Cu(II), Hg(II), was investigated as a function of protein state, i.e. apo-, reduced and oxidised azurin. Two different metal binding sites, characterized by two different spectroscopic absorbancies, were detected: one is accessible to Ag(I) and Cu(II) but not to Hg(II); the other one binds Ag(I) and Hg(II) but not copper. Whe...

While gold partitioning into hydrothermal fluids responsible for the formation of porphyry and epithermal deposits is currently well understood, its behavior during differentiation metal-rich silicate melts still subject an intense scientific debate. Typically, scavenged sulfides crustal fractionation sulfur-rich mafic to intermediate magmas development native forms alloys this important precio...

The metal binding properties of the human copper chaperone ATOXI and its yeast homologue Atxl have been characterized. Complexes of these proteins with Cu(I), Ag (1), Cd(II) and Hg(II) were studied by native gel electrophoresis, chemical cross-linking followed by SDS-PAGE, as well as by size exclusion chromatography, mutagenesis and UV-visible absorption spectroscopy. Results indicate that bind...

The supersaturated solid-solution interfaces between Cu core and Ag shell structures improve their bonding strength greatly prevent the outward diffusion of atoms slow down growth oxides. printed CuAg x electrodes maintain high conductivity for a long time even at 220 °C, which is far better than conventional core/Ag Cu/Ag mixed that rapidly oxidize below 150 °C. These findings not only promote...

Abstract To improve the tribological performance of CSS-42L bearing steel, smooth surfaces (SSs), groove-textured (GSs), GSs with Sn-Ag-Cu (GSs-SAC), and Sn-Ag-Cu-Ti 3 C 2 (GSs-SACT) were prepared on CSS-42L. In addition, experimental studies conducted properties. The obtained results indicated that GSs-SACT exhibited best anti-friction noise reduction performances. These remarkable performance...

Abstract A three-dimensional (3D) band-gap energy ( E g ) map was constructed for a (Cu 1− y Ag )(Ga x In )Se 2 (CAGISe) system. This system’s increases monotonically from CuInSe (CISe) as the ratios of both Ga/(Ga+In) [GGI], , and Ag/(Cu+Ag) [ACA], increase. Furthermore, levels VB maximum (VBM) conduction band minimum (CBM) were also mapped in 3D. this CAGISe system, there is no significant ch...

Fluorescent DNA-Ag NCs are demonstrated as novel, label-free, and turn-on fluorescence probes for Cu(2+) ions sensors. We also used this novel fluorescent probe to determine Cu(2+) ions in Montana soil (SRM 2710) and pond water.

Eutectic structures in Ag-based brazing filler metals play an important role improving the properties of alloys and brazed joints. The typical microstructures morphological evolution Ag-Cu eutectic solidified at various cooling rates with addition different Sn contents were investigated. formation mechanisms anomalous structure (AES) transition from lamellar (LES) to AES elucidated. a slow rate...