Synthesis and Catalytic Studies of Nanoalloy Particles Based on Bismuth, Silver, and Rhenium

The work reports the synthesis and characterization of ternary nanoalloy catalysts silver, bismuth, rhenium from alkaline solutions containing L–cysteine as a complexing agent sodium borohydride reducing agent. UV–Vis spectra dynamic light scattering (DLS) analyses obtained colloids were performed. Additionally, high-resolution transmission electron microscope (HR–TEM) analysis assisted former investigations. influence stabilizer (PVA) was demonstrated for bismuth nanoparticles reaching an average size 8 nm with PVA, whereas they grew large, 514 nm, in case without stabilizing AgReBi particles reach 19 PVA. presence two absorption maxima spectrum suggests shape anisotropy these nanoparticles. TEM micrographs demonstrate crystal structure Cyclic voltamaperometry allows deciphering catalytic properties hydrogen peroxide electro-reduction. Both showed relatively high activity H2O2 electro-reduction amperometric tests.