Conventional solvothermal synthesis of core-shell nanoparticles results in them being covered with surfactant molecules for size control and stabilization, undermining their practicality as electrocatalysts. Here, we report an electrochemical method for the synthesis of core-shell nanoparticles directly on electrodes, free of surfactants. By implementation of selective electrodeposition on gold cores, 1st-row transition metal shells were constructed with facile and precise thickness control. This type of metal-on-metal core-shell synthesis by purely electrochemical means is the first of its kind. The applicability of the nanoparticle decorated electrodes was demonstrated by alkaline oxygen evolution catalysis, during which the Au-Ni example displayed stable catalysis with low overpotential.
|Number of pages||7|
|Publication status||Published - 2021 Oct 28|
Bibliographical noteFunding Information:
This work was nancially supported by the Basic Science Research Program through the National Research Foundation (NRF) of Korea (NRF-2020R1C1C1007409, NRF-2020R1A4A1017737 and NRF-2019M3E6A1064707).
© The Royal Society of Chemistry 2021.
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