Fig. 5: Rapid dissolution of a thin-shell Pd@Au nanocube. | Nature Communications

Fig. 5: Rapid dissolution of a thin-shell Pd@Au nanocube.

From: Imaging the kinetics of anisotropic dissolution of bimetallic core–shell nanocubes using graphene liquid cells

Fig. 5

a Time-lapse TEM images and corresponding simulation snapshots extracted from Supplementary Movies 4 and 7a showing rapid dissolution of thin-shell nanocubes (70-nm Pd core and 22-nm Au shell) when exposed to a weakly oxidative environment. Chemical potential in simulation: −3.525 eV. b, c Au-shell volume to the power of 1/3 and 2/3 as a function of time based on data from experiment b and simulation c. d Schematic description of the galvanic corrosion protection mechanism responsible for the passivation of Au domain. The electrons released from oxidation of Pd either react with oxidative species in the liquid environment or migrate to Au.

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