Seedless, silver-induced synthesis of star-shaped gold/silver bimetallic nanoparticles as high efficiency photothermal therapy reagent

Optical properties and microstructure of Au nanorods via seed solution amount variation synthesized by seed-mediated growth method

“…On the other hand, when the concentration of silver ions in solution decreased, this promoted the formation of irregular quasi-spherical gold/silver bimetallic nanoparticles. The results of Cheng et al [35] do not agree with the present study due to the different processes and compositions.…”

Mechanistic study on reduction reaction of nitro compounds catalyzed by gold nanoparticles using in situ SERS monitoring

“…1b). Gold nanostars were prepared using a versatile, room-temperature, surfactant free, one-step method as reported previously [20]. Ascorbic acid, a weak reducing agent, was added quickly into the HAuCl 4 aqueous solution containing a small amount of AgNO 3 as the structure director.…”

Synthesis of bimetallic gold/silver nanoparticles via in situ seeding

“…The synthesis of large (>100 nm) star-shaped nanoparticles has been thoroughly studied. Both seed-growth [8] and seedless [7,9] methods are now well known. Compared to the seedless method, seed-growth allows slightly smaller nanoparticles to be obtained under identical conditions (pH, precursor ratio, temperature, and intensity of mixing).…”

“…As our understanding of the SERS mechanism developed, different researchers attempted to calculate and synthesize nanostructures with greater Raman enhancement, including star-shaped gold and silver nanoparticles. A number of works proposed ways of obtaining nanostars with different numbers of rays [6], the lengths of which can be varied by changing the molar ratio between reacting AgNO 3 and HAuCl 4 [7]. The synthesis of large (>100 nm) star-shaped nanoparticles has been thoroughly studied.…”