Atomic force microscopy of the dissolution of cubic Pt nanoparticle on a carbon substrate

Shape‐directed platinum nanoparticle synthesis: nanoscale design of novel catalysts

“…Some common polymers used for this directing method include polyvinylpyrrolidone (PVP), block copolymers and even short peptide sequences . Other directing agents which also act as stabilizers include sodium citrate, sodium polyacrylate and sodium succinate …”

“…Platinum's face‐centered cubic structure tends to most easily produce low index facets such as {100}, {111} and {110}. Under purely thermodynamic growth conditions, a growing platinum nanoparticle will minimize its surface energy to take on an amorphous shape; however, kinetic growth conditions where precursor reduction rate is reduced and directing agent concentration are controlled allow for spherical, cubic, tetrahedral, octahedral, branched, plate‐like, wire‐like and porous nanostructures to be created.…”

High Speed AFM Study on the Potential Dependence of the Dissolution of Shape-controlled Pt Nanoparticles

“…Shape-controlled Pt nanoparticles play a key role in this strategy. Previous atomic force microscopy (AFM) study shows that cubic Pt nanoparticles are dissolved from the upper terrace in neutral solution [1,2]. In acidic solution, however, Pt nanoparticles change too fast to be measured using the conventional AFM.…”