title: Truncated ditetragonal gold prisms as nanofacet activators of catalytic platinum.
abstract: We report a facile, seed-mediated method to synthesize nanoscale gold truncated ditetragonal nanoprisms (TDPs) enclosed by 12 high-index {310} facets. The method leads to the formation of nanoparticles with high size and shape monodispersity and allows for easy surfactant removal. The dependence of particle shape on the synergetic contribution of metallic ions, halide ions, and surfactant adsorbates during synthesis is described. The resulting high-index nanoparticle facets were demonstrated as efficient activators of a supported catalytic material (platinum). A Pt monolayer deposited onto the Au TDP nanofacets with sharp electrochemical signatures exhibits an enhanced catalytic activity.
authors: Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States. flu@bnl.gov
authors: Fang
authors: F
authors: Lu
authors: Yu
authors: Y
authors: Zhang
authors: Lihua
authors: L
authors: Zhang
authors: Yugang
authors: Y
authors: Zhang
authors: Jia X
authors: JX
authors: Wang
authors: Radoslav R
authors: RR
authors: Adzic
authors: Eric A
authors: EA
authors: Stach
authors: Oleg
authors: O
authors: Gang
mesh_terms: D002384:Catalysis; D004563:Electrochemistry; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D010984:Platinum / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D010984:Platinum; D006046:Gold