Enhancement of spectral shift of plasmon resonances in bimetallic noble metal nanoparticles in core–shell structure

Recyclable Magnetic MIP-Based SERS Sensors for Selective, Sensitive, and Reliable Detection of Paclobutrazol Residues in Complex Environments

“…The peak at ∼404 nm is contributed by Ag shells, while the one at ∼714 nm can be attributed to the electric interaction between the Au core and Ag shell, which helps prove the formation of bimetallic core−shell Au@Ag nanocrystals. 34,35 Figure S1e shows that Au@Ag nanocrystals are uniformly anchored on the surfaces of Fe 3 O 4 @SiO 2 nanocrystals.…”

Mapping the effects of physical and chemical reduction parameters on local atomic distributions within bimetallic nanoparticles

“…Bi-and multi-metallic nanoparticles (NPs) have promising applications in the electronic, energy, and medical industries due to the synergistic optical and electronic characteristics resulting from combining favorable aspects of their monometallic constituents. 1 NPs made of noble metals are of particular interest towards these applications: the ability to finely tune their local surface plasmon resonance (LSPR), [2][3][4][5] their efficacy as catalysts, [6][7][8][9][10][11] their low biotoxicity, and their facile synthesis in aqueous media under air-stable conditions make them an attractive and accessible technology. Additionally, the common FCC crystal structure as well as similar lattice parameters and bonding characteristics inherent to noble metals make them ideal candidates for the successful synthesis of NP alloys that exhibit mixed metal bonding.…”

Hollow platinum-gold and palladium-gold nanoparticles: synthesis and characterization of composition-structure relationship

“…Bimetallic nanoparticles have received great attention in the last years, as they exhibit outstanding properties in comparison with the corresponding monometallic forms. These unique properties include the tuned frequency shift of plasmon modes [1][2][3], the high catalytic activity towards hydrogen generation [4], the carbon dioxide reduction [5], and the reduction and oxidation of various chemical compounds such as nitrophenol [6], caffeine [7], benzyl alcohol [8], and formic acid [9]. Bimetallic nanoparticles with different shapes and structures have been reported such as nanoframes [9], nanoprisms [10], core-shell [1,11], nanoflowers [12], and hollow nanoparticles [13,14].…”