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Title: Turning the halide switch in the synthesis of Au–Pd alloy and core–shell nanoicosahedra with terraced shells: Performance in electrochemical and plasmon-enhanced catalysis

Journal Article · · Nano Letters
 [1];  [2];  [3];  [3];  [4];  [5]
  1. Academia Sinica, Taipei (Taiwan); National Taipei Univ. of Technology, Taipei (Taiwan)
  2. National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. National Taipei Univ. of Technology, Taipei (Taiwan)
  5. Academia Sinica, Taipei (Taiwan)

Au Pd nanocrystals are an intriguing system to study the integrated functions of localized surface plasmon resonance (LSPR) and heterogeneous catalysis. Gold is both durable and can harness incident light energy to enhance the catalytic activity of another metal, such as Pd, via the SPR effect in bimetallic nanocrystals. Despite the superior catalytic performance of icosahedral (IH) nanocrystals compared to alternate morphologies, the controlled synthesis of alloy and core shell IH is still greatly challenged by the disparate reduction rates of metal precursors and lack of continuous epigrowth on multiply twinned boundaries of such surfaces. Herein, we demonstrate a one-step strategy for the controlled growth of monodisperse Au Pd alloy and core shell IH with terraced shells by turning an ionic switch between [Br ]/[Cl] in the coreduction process. The core shell IH nanocrystals contain AuPd alloy cores and ultrathin Pd shells (<2 nm). They not only display more than double the activity of the commercial Pd catalysts in ethanol electrooxidation attributed to monatomic step terraces but also show SPR-enhanced conversion of 4-nitrophenol. Furthermore, this strategy holds promise toward the development of alternate bimetallic IH nanocrystals for electrochemical and plasmon-enhanced catalysis.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Nuclear Science User Facility (NSUF)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1330559
Journal Information:
Nano Letters, Vol. 16, Issue 9; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 62 works
Citation information provided by
Web of Science

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Cited By (16)

A general seed-mediated approach to the synthesis of AgM (M = Au, Pt, and Pd) core–shell nanoplates and their SERS properties journal January 2017
Bimetallic Pd 96 Fe 4 nanodendrites embedded in graphitic carbon nanosheets as highly efficient anode electrocatalysts journal January 2019
High-efficient catalytic reduction of 4-nitrophenol based on reusable Ag nanoparticles/graphene-loading loofah sponge hybrid journal May 2018
Microbial synthesis of graphene‐supported highly‐dispersed Pd‐Ag bimetallic nanoparticles and its catalytic activity journal July 2019
Enhanced photoelectrochemical water oxidation performance of a hematite photoanode by decorating with Au–Pt core–shell nanoparticles journal January 2017
Three-dimensional graphene oxide foams loaded with AuPd alloy: a sensitive electrochemical sensor for dopamine journal August 2018
Plasmon-Enhanced Electrocatalytic Properties of Rationally Designed Hybrid Nanostructures at a Catalytic Interface journal November 2018
Tunable bimetallic Au–Pd@CeO 2 for semihydrogenation of phenylacetylene by ammonia borane journal January 2019
Porous Trimetallic PtRhCu Cubic Nanoboxes for Ethanol Electrooxidation journal June 2018
Simple synthesis and surface facet-tuning of ultrathin alloy-shells of Au@AuPd nanoparticles via silver-assisted co-reduction onto facet-controlled Au nanoparticles journal January 2018
Monodisperse ordered indium–palladium nanoparticles: synthesis and role of indium for boosting superior electrocatalytic activity for ethanol oxidation reaction journal January 2019
Reduction rate as a quantitative knob for achieving deterministic synthesis of colloidal metal nanocrystals journal January 2017
Tuning and Locking the Localized Surface Plasmon Resonances of CuS (Covellite) Nanocrystals by an Amorphous CuPdxS Shell journal February 2017
The Many “Facets” of Halide Ions in the Chemistry of Colloidal Inorganic Nanocrystals journal July 2018
Seed-Mediated Growth of Ag@Au Nanodisks with Improved Chemical Stability and Surface-Enhanced Raman Scattering journal October 2018
Controlled Fabrication of Flower-Shaped Au–Cu Nanostructures Using a Deep Eutectic Solvent and Their Performance in Surface-Enhanced Raman Scattering-Based Molecular Sensing journal February 2020