One-pot synthesis and enhanced catalytic performance of Pd and Pt nanocages via galvanic replacement reactions

Polyamine-assisted hydrothermal synthesis of bimetallic Pd1Cu3 multipods and their high catalytic ability in 4-nitrophenol reduction

“…For example, highly branched Pd multipod nanocrystals with structural anisotropy exhibited remarkably improved electrocatalytic/ catalytic activities and stabilities owing to high density of lowcoordinated atoms (such as steps, kinks, terraces, islands and vacancies) and particular self-supported structures that could effectively suppress Ostwald ripening or grain growth. [6][7][8][9][10] Recently, Pd-Cu alloy nanocrystals have been widely used as effective catalysts for the methanol oxidation reaction, nitrate electroreduction, oxygen reduction reaction, formic acid oxidation reaction, etc., which not only exhibited higher catalytic activities compared with monometallic Pd nanocrystals but also reduced the cost signicantly. 3,[11][12][13][14][15][16] Nielsenite (Pd 1 Cu 3 ), a palladium-group bimetallic mineral material, was discovered and named by Nielsen.…”

A minireview on the synthesis of single atom catalysts

“…11). The galvanic replacement method has been successfully adopted in the synthesis of atomic layer deposited PtRu, 114,115 PdCu, [116][117][118] PdAu, [119][120][121] PtPd, [122][123][124] and Hg (1Àx) Cd x Te. 125 In occasional cases, to protect the intact structure of the template metal, a ternary metal might be introduced as sacri-cial metal template for the galvanic replacement method.…”

“…11). The galvanic replacement method has been successfully adopted in the synthesis of atomic layer deposited PtRu, 114,115 PdCu, 116–118 PdAu, 119–121 PtPd, 122–124 and Hg (1− x ) Cd x Te. 125…”

Enhancing Galvanic Replacement in Plasmonic Hollow Nanoparticles: Understanding the Role of the Speciation of Metal Ion Precursors

“…The idea of a galvanic replacement reaction fashioned by speciation was further investigated by using and precursors. Although the galvanic replacement reaction between Ag templates and Pd or Pt precursors has been widely studied, the synthesis of hollow nanoparticles with continuous and smooth walls is challenging compared to Au. For Ag−Pt, the main limitation reported in the control of the final particle morphology is attributed to the poor miscibility between Ag and Pt due to lattice mismatch and the stronger bonding energy of Pt−Pt compared to that of Pt−Ag; favoring the formation of Pt island growth pattern rather than alloying.…”

“…The versatility offered by standard galvanic replacement methods can be expanded by introducing a secondary reducing agent in the reaction medium that will act upon both metals . More recently, altering the speciation of the oxidant metal to prevent the galvanic replacement reaction from occurring or to control the outcome of the galvanic replacement process was also reported . Manipulation of the metal‐complexing ligands as a control parameter has been little explored so far and will be discussed in this paper using the results from co‐reducer‐assisted galvanic replacement reactions carried out on silver nanoparticles using , and precursors for which we have manipulated the speciation in water with pH and pCl (by analogy to pH, the letter p in the expression pL is used to indicate the decimal cologarithm associated with the concentration of the ligand Cl).…”