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J Am Chem Soc
2023 Jun 21;14524:13400-13410. doi: 10.1021/jacs.3c03682.
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Twin Proliferation and Prolongation under Kinetic Control: Pd-Au Janus Icosahedra versus Pd@Au Core-Shell Starfishes.
Qiu X
,
Pawlik V
,
Zhou S
,
Tao J
,
Xia Y
.
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Heterogeneous bimetallic nanocrystals featuring explicit spatial configurations and abundant twin defects can simultaneously enable geometric and ligand effects to enhance catalytic and photonic applications. Herein, we report two growth patterns of Au atoms on penta-twinned Pd decahedra, involving twin proliferation to generate asymmetric Pd-Au Janus icosahedra and twin elongation to produce anisotropic Pd@Au core-shell starfishes, respectively. Mechanistic analysis indicates that the injection rate determines the lower-limit number (nlow) of Au(III) ions in the steady state and thus controls the growth pattern. When nlow ≤ 5.5, the kinetic rate is slow enough to initiate asymmetrical one-side growth but fast enough to outpace surface diffusion; Au tetrahedral subunits are successively proliferated along the axial ⟨110⟩ direction of Pd decahedra to form Pd-Au Janus icosahedra. Composed of five Pd and 15 Au tetrahedral subunits, such a heterogeneous icosahedron supports high (2.2 GPa) tensile strain and high strain difference up to +21.9%. In contrast, when nlow > 5.5, the fast reduction kinetics promotes symmetric growth with inadequate surface diffusion. As such, Au atoms are laterally deposited along five high-indexed ⟨211⟩ ridges of Pd decahedra to generate concave Pd@Au core-shell starfishes with tunable sizes (28-40 nm), twin elongation ratios (33.82-162.08%), and lattice expansion ratios (8.82-20.10%).
Bian,
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Bian,
Epitaxial Growth of Twinned Au-Pt Core-Shell Star-Shaped Decahedra as Highly Durable Electrocatalysts.
2015,
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Chen,
Pd-Pt Tesseracts for the Oxygen Reduction Reaction.
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Chen,
Penta-Twin Destruction by Coordinated Twin Boundary Deformation.
2021,
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Gilroy,
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2017,
Pubmed
Huang,
Steam-created grain boundaries for methane C-H activation in palladium catalysts.
2021,
Pubmed
Huo,
One-Dimensional Metal Nanostructures: From Colloidal Syntheses to Applications.
2019,
Pubmed
Li,
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2021,
Pubmed
Lin,
One-Pot Heterointerfacial Metamorphosis for Synthesis and Control of Widely Varying Heterostructured Nanoparticles.
2021,
Pubmed
Liu,
Twin-Directed Deposition of Pt on Pd Icosahedral Nanocrystals for Catalysts with Enhanced Activity and Durability toward Oxygen Reduction.
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Pubmed
Luo,
Facile Synthesis of Ag Nanorods with No Plasmon Resonance Peak in the Visible Region by Using Pd Decahedra of 16 nm in Size as Seeds.
2015,
Pubmed
Lyu,
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2021,
Pubmed
Ma,
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2020,
Pubmed
Majee,
Tweaking Nickel with Minimal Silver in a Heterogeneous Alloy of Decahedral Geometry to Deliver Platinum-like Hydrogen Evolution Activity.
2020,
Pubmed
Peng,
Toward a quantitative understanding of symmetry reduction involved in the seed-mediated growth of Pd nanocrystals.
2015,
Pubmed
Rossi,
Hot-Carrier Generation in Plasmonic Nanoparticles: The Importance of Atomic Structure.
2020,
Pubmed
Smith,
Defect-Directed Growth of Symmetrically Branched Metal Nanocrystals.
2020,
Pubmed
Tsao,
Aqueous phase synthesis of Au-Ag core-shell nanocrystals with tunable shapes and their optical and catalytic properties.
2014,
Pubmed
Velázquez-Salazar,
Controlled Overgrowth of Five-Fold Concave Nanoparticles into Plasmonic Nanostars and Their Single-Particle Scattering Properties.
2019,
Pubmed
Wang,
Kinetic diffusion-controlled synthesis of twinned intermetallic nanocrystals for CO-resistant catalysis.
2022,
Pubmed
Wang,
Palladium-platinum core-shell icosahedra with substantially enhanced activity and durability towards oxygen reduction.
2015,
Pubmed
Wang,
Thermodynamics versus kinetics in nanosynthesis.
2015,
Pubmed
Wang,
Facet-Controlled Synthesis of Platinum-Group-Metal Quaternary Alloys: The Case of Nanocubes and {100} Facets.
2023,
Pubmed
Wang,
Pd@Pt Core-Shell Concave Decahedra: A Class of Catalysts for the Oxygen Reduction Reaction with Enhanced Activity and Durability.
2015,
Pubmed
Wang,
Etching-Assisted Route to Heterophase Au Nanowires with Multiple Types of Active Surface Sites for Silane Oxidation.
2019,
Pubmed
Wang,
Aerobic Oxidation of Cyclohexane on Catalysts Based on Twinned and Single-Crystal Au75Pd25 Bimetallic Nanocrystals.
2015,
Pubmed
Weng,
Twin-Boundary Reduced Surface Diffusion on Electrically Stressed Copper Nanowires.
2022,
Pubmed
Xie,
Surface and Interface Control in Nanoparticle Catalysis.
2020,
Pubmed
Zhou,
Quantitative Analysis of the Reduction Kinetics Responsible for the One-Pot Synthesis of Pd-Pt Bimetallic Nanocrystals with Different Structures.
2016,
Pubmed
Zhu,
Asymmetric Core-Shell Gold Nanoparticles and Controllable Assemblies for SERS Ratiometric Detection of MicroRNA.
2021,
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