Synthesis of hex nut shaped Au–Ag nanostructures via a galvanic replacement reaction and their optical properties

Synthesis of Pd–AuAg trimetal nanohybrids with controlled heterostructures and their application in the continuous flow catalytic reduction of Cr(vi)

“…The standard reduction potential of Ag + /Ag is 0.8 V relative to the standard hydrogen electrode (SHE), which is lower than that of AuCl 4 − /Au (1.0 V vs. SHE). Therefore, the reduced Ag atoms are rapidly oxidized and Au 3+ ions can be further reduced without the action of the reducing agent (PVP) because of the following reaction: 67–69 3Ag + AuCl 4 − → 3Ag + + Au + 4Cl − …”

High-yield synthesis and hybridizations of Cu microplates for catalytic applications

“…6(c) shows that these microparticles exhibit an LSPR extinction peak at 554 nm, indicating that the peak was slightly blue-shifted after the galvanic replacement reaction. Given that the surface plasmon resonance for small Au nanoparticles appears at wavelengths near 500 nm, 89 this change in LSPR properties occurred because alloy structures of Cu microplates and Au nanocrystals were formed through the galvanic replacement reaction. The element mapping images of the Cu-Au hybrid microplates are displayed in Fig.…”

Multiple Scattering from Electrospun Nanofibers with Embedded Silver Nanoparticles of Tunable Shape for Random Lasers and White-Light-Emitting Diodes

“…The Ag NPs were synthesized through an ordinary solution processing method described in the literature. , Briefly, 20 mL of an aqueous solution containing trisodium citrate (Na 3 CA 75 mM, 1 mL), silver nitrate (AgNO 3 , 0.05 M, 100 μL), polyvinylpyrrolidone (PVP, Mw = 58000), ethanol (99.8%, 200 μL), and H 2 O 2 (30 wt %, 60 μL) was stirred vigorously at room temperature. Sodium borohydride (NaBH 4 , 100 mM) was infused into the solution to stimulate reduction, and upon infusion, the color of the solution rapidly became light yellow.…”