“…For example, following pretreatment, structured bimetallic NPs can undergo atomic rearrangements, [13][14][15][16] the crystal structure, shape, and facets can change, [4,[17][18][19] and atoms can undergo selective dissolution. [7,8,13,16,[20][21][22] Even for polycrystalline gold surfaces, the rate of anodic Au dissolution during potential cycling is highly dependent on the surface structure of the electrode. [23] These atomic-level structural changes are further exacerbated for very small (<~5 nm) NPs due to their inherent instability.…”