Electrochemical synthesis of core–shell nanoparticles by seed-mediated selective deposition

Abstract

Conventional solvothermal synthesis of core-shell nanoparticles result in that covered with surfactant molecules for size control and stabilization, undermining their practicality as electrocatalysts. Here, we report an electrochemical method for...

Electrochemical Analysis of Attoliter Water Droplets in Organic Solutions through Partitioning Equilibrium

“…Several groups, including ours, studied single emulsions (water-in-oil and oil-in-water droplets) via single-entity electrochemistry using redox species (e.g., ferrocene and ferrocyanide) contained beforehand [ 23 , 24 , 25 , 26 ]. Furthermore, the electrochemical synthesis of metal particles using a single aqueous droplet has been extensively developed along with the conventional electrodeposition method [ 27 , 28 , 29 ].…”

The discrete single-entity electrochemistry of Pickering emulsions

“…[17][18][19][20][21] Recent investigations into the utility of emulsion electrochemistry pioneered nanomaterial synthesis on electrodes. [22][23][24][25][26][27] An emulsion colliding on an electrode serves simultaneously as a reactor and as a template, typically yielding surfactant-free nanoparticles with designed sizes and compositions. [22][23][24]27 A number of research groups have successfully synthesized various types of nanomaterials (metals, 22 oxides, 23 and polymers 25 ) via utilizing the discrete singleentity electrochemistry of normal and reverse emulsions.…”

“…Conventional electrochemical synthetic approaches thus far, which rely on diffusion and stochastic collisions between emulsions and substrate electrodes, suffer from slow synthesis rates, typically requiring in excess of hours to produce one electrode decorated with an appreciable amount of catalyst nanomaterial. 26 To circumvent these problems, we turned our attention toward Pickering emulsions (Fig. 1).…”

Sonoelectrosynthesis of monodisperse metal nanoparticles

“…Electrons flow from the anode to the cathode, where metal ions are reduced to form metal NPs. 8,[10][11][12][13][14][15][16][17][18] As an alternative to metal salts as precursors, Reetz et al showed that a Pd sheet could be electrochemically stripped and then ions reduced at a Pt sheet to form Pd NPs. However, the method was only capable of synthesizing NPs less than 5 nm in diameter, with little structural control demonstrated.…”