Online citations, reference lists, and bibliographies.
Referencing for people who value simplicity, privacy, and speed.
Get Citationsy
← Back to Search

Structural And Architectural Evaluation Of Bimetallic Nanoparticles: A Case Study Of Pt-Ru Core-shell And Alloy Nanoparticles.

Selim Alayoǧlu, P. Zavalij, B. Eichhorn, Q. Wang, A. Frenkel, P. Chupas
Published 2009 · Materials Science, Medicine

Save to my Library
Download PDF
Analyze on Scholarcy Visualize in Litmaps
Reduce the time it takes to create your bibliography by a factor of 10 by using the world’s favourite reference manager
Time to take this seriously.
Get Citationsy
A comprehensive structural/architectural evaluation of the PtRu (1:1) alloy and Ru@Pt core-shell nanoparticles (NPs) provides spatially resolved structural information on sub-5 nm NPs. A combination of extended X-ray absorption fine structure (EXAFS), X-ray absorption near edge structure (XANES), pair distribution function (PDF) analyses, Debye function simulations of X-ray diffraction (XRD), and field emission transmission electron microscopy/energy dispersive spectroscopy (FE-TEM/EDS) analyses provides complementary information used to construct a detailed picture of the core/shell and alloy nanostructures. The 4.4 nm PtRu (1:1) alloys are crystalline homogeneous random alloys with little twinning in a typical face-centered cubic (fcc) cell. The Pt atoms are predominantly metallic, whereas the Ru atoms are partially oxidized and are presumably located on the NP surface. The 4.0 nm Ru@Pt NPs have highly distorted hcp Ru cores that are primarily in the metallic state but show little order beyond 8 A. In contrast, the 1-2 monolayer thick Pt shells are relatively crystalline but are slightly distorted (compressed) relative to bulk fcc Pt. The homo- and heterometallic coordination numbers and bond lengths are equal to those predicted by the model cluster structure, showing that the Ru and Pt metals remain phase-separated in the core and shell components and that the interface between the core and shell is quite normal.
This paper references
Electronic factors determining the reactivity of metal surfaces
B. Hammer (1995)
Analysis of EXAFS data on bimetallic clusters
G. H. Via (1990)
International tables for crystallography
T. Hahn (2002)
Chemical synthesis of large metal clusters and their properties
G. Schmid (1995)
EXPGUI, a graphical user interface for GSAS
B. Toby (2001)
Effect of Strain on the Reactivity of Metal Surfaces
M. Mavrikakis (1998)
J. Am. Chem. Soc
CO chemisorption at metal surfaces and overlayers.
Hammer (1996)
Formation of Pt islets on facets of Ru nanoparticles : First-principles study
M. A. Ortigoza (2008)
Core Shell Inversion during Nucleation and Growth of Bimetallic Pt/Ru Nanoparticles
M. Nashner (1998)
EXAFS/XANES, chemisorption and IR investigations of colloidal Pt/Rh bimetallic catalysts
K. Siepen (2000)
A review of modern transition-metal nanoclusters: their synthesis, characterization, and applications in catalysis
J. Aiken (1999)
Designing surface alloys with specific active sites
P. Holmblad (1996)
Structural incoherency and structure reversal in bimetallic Au- Pd nanoclusters
H. Liu (2005)
Controlled Synthesis and Characterization of Rucore−Ptshell Bimetallic Nanoparticles
B. Hwang (2008)
Ru-Pt core-shell nanoparticles for preferential oxidation of carbon monoxide in hydrogen.
Selim Alayoǧlu (2008)
ATHENA, ARTEMIS, HEPHAESTUS: data analysis for X-ray absorption spectroscopy using IFEFFIT.
B. Ravel (2005)
Shell Structure of Clusters. J. Phys. Chem
T P Martin (1991)
Direct observation of the structure of gold nanoparticles by total scattering powder neutron diffraction
Katharine Page (2004)
Rh-Pt bimetallic catalysts: synthesis, characterization, and catalysis of core-shell, alloy, and monometallic nanoparticles.
Selim Alayoǧlu (2008)
Characterization of superparamagnetic "core-shell" nanoparticles and monitoring their anisotropic phase transition to ferromagnetic "solid solution" nanoalloys.
Jong-il Park (2004)
Characterization of Superpararnagnetic " CoreϪShell " Nanoparticles and Monitoring Their Anisotropic Phase Transition to Ferromagnetic " Solid Solution
J I Park (2004)
Controlled Synthesis and Characterization of Ru-CoreϪPt- Shell Bimetallic Nanoparticles
B J Hwang (2008)
Platinum nanoparticle shape effects on benzene hydrogenation selectivity.
K. M. Bratlie (2007)
HAADF study of Au-Pt core-shell bimetallic nanoparticles
D. Garcia-Gutierrez (2004)
Epitaxial growth of heterogeneous metal nanocrystals: from gold nano-octahedra to palladium and silver nanocubes.
F. Fan (2008)
Design of a surface alloy catalyst for steam reforming
Besenbacher (1998)
How To Make Electrocatalysts More Active for Direct Methanol OxidationAvoid PtRu Bimetallic Alloys
J. Long (2000)
Tuning of catalytic CO oxidation by changing composition of Rh-Pt bimetallic nanoparticles.
J. Park (2008)
Carbon Support Effects on Bimetallic Pt−Ru Nanoparticles Formed from Molecular Precursors
Charles W. Hills (1999)
Structural models and atomic distribution of bimetallic nanoparticles as investigated by X-ray absorption spectroscopy.
B. Hwang (2005)
3-D Structure of Nanosized Catalysts by High-Energy X-ray Diffraction and Reverse Monte Carlo Simulations: Study of Ru
Nicholas M. Bedford (2007)
Large clusters and colloids. Metals in the embryonic state
G. Schmid (1992)
Pt Submonolayers on Metal NanoparticlesONovel Electrocatalysts for H2 Oxidation and O2 Reduction. Electrochim
K. Sasaki (2003)
Bagus, P. S. XPS and Reactivity Study of Bimetallic Nanoparticles Containing Ru and Pt Supported on a Gold Disk. Electrochim. Acta
A Lewera (2006)
Multiple-scattering calculations of x-ray-absorption spectra.
Zabinsky (1995)
Applications of an amorphous silicon-based area detector for high-resolution, high-sensitivity and fast time-resolved pair distribution function measurements
P. Chupas (2007)
Ni@Pt Core−Shell Nanoparticles: Synthesis, Structural and Electrochemical Properties
Yumei Chen (2008)
Pt-Cu core-shell and alloy nanoparticles for heterogeneous NO(x) reduction: anomalous stability and reactivity of a core-shell nanostructure.
Shenghu Zhou (2005)
Shaping binary metal nanocrystals through epitaxial seeded growth.
S. E. Habas (2007)
Pt submonolayers on metal nanoparticles—novel electrocatalysts for H2 oxidation and O2 reduction
K. Sasaki (2003)
Surface strain versus substrate interaction in heteroepitaxial metal layers: Pt on Ru(0001).
A. Schlapka (2003)
International Tables for Crystallography
Géard A. Langlet (2002)
Designing Surface Alloys with Specific
P. M. Holmblad (1996)
Preparation of Pd−Pt Bimetallic Colloids with Controllable Core/Shell Structures
Yuan Wang† and (1997)
Exact model calculations of the total radial distribution functions for the X‐ray diffraction case and systems of complicated chemical composition
V. I. Korsunskiy (2005)
PDFfit2 and PDFgui: computer programs for studying nanostructure in crystals.
C. Farrow (2007)
XPS and reactivity study of bimetallic nanoparticles containing Ru and Pt supported on a gold disk
A. Lewera (2006)
Shape-Controlled Syntheses of Gold Nanoprisms and Nanorods Influenced by Specific Adsorption of Halide Ions
T. Ha (2007)
Shape-Controlled Conversion of β-Sn Nanocrystals into Intermetallic M-Sn (M: Fe, Co, Ni, Pd) Nanocrystals.
N. H. Chou (2007)
Rapid acquisition pair distribution function (RA-PDF) analysis.
P. Chupas (2003)
Kinetically controlled synthesis of triangular and hexagonal nanoplates of palladium and their SPR/SERS properties.
Y. Xiong (2005)
DISCUS: a program for diffuse scattering and defect‐structure simulation
T. Proffen (1997)
Structural Characterization of Carbon-Supported Platinum−Ruthenium Nanoparticles from the Molecular Cluster Precursor PtRu5C(CO)16
M. Nashner (1997)
Pt(x)Ru(1-x)/Ru(0001) surface alloys-formation and atom distribution.
H. Hoster (2008)
Near-monodisperse tetrahedral rhodium nanoparticles on charcoal: the shape-dependent catalytic hydrogenation of arenes.
K. Park (2007)
Shell Structure in Clusters
Marvin L. Cohen (1987)

This paper is referenced by
A robust and highly active hydrogen evolution catalyst based on Ru nanocrystals supported on vertically oriented Cu nanoplates
Dipak V Shinde (2020)
Synergetic effect of Ni and Co in Ni–Co/SBA-15-CD catalysts and their catalytic performance in carbon dioxide reforming of methane to syngas
Hao Wu (2016)
The potential of zero total charge and electrocatalytic properties of Ru@Pt core-shell nanoparticles
Jørgen Svendby (2019)
Silver, gold, and silver@gold nanoparticle-anchored l-cysteine-functionalized reduced graphene oxide as electrocatalyst for methanol oxidation
N. Atar (2015)
Enhanced catalytic CO oxidation by Cu13-mNim (m = 0, 1, 13) clusters at ambient temperatures with more active sites and distinct mechanistic pathways
T. Li (2019)
Nickel–Gallium Intermetallic Nanocrystal Catalysts in the Semihydrogenation of Phenylacetylene
Changming Li (2014)
Preparation of carbon-supported Pt–Ru core-shell nanoparticles using carbonized polydopamine and ozone for a CO tolerant electrocatalyst
Gilltae Roh (2019)
Synergistic effect in heterogeneously catalyzed reduction of U(VI) and Np(V) and decomposition of hydrazine and oxalic acid with bimetallic Pt-Ru catalysts
M. Tyumentsev (2013)
Reactivity of surface species in heterogeneous catalysts probed by in situ X-ray absorption techniques.
S. Bordiga (2013)
Microwave-assisted polyol synthesis of bimetallic RuRe nanoparticles stabilized by PVP or oxide supports (γ-alumina and silica)
K. Baranowska (2016)
Application of bimetallic PtPd alloy decorated graphene in peroxydisulfate electrochemiluminescence aptasensor based on Ag dendrites decorated indium tin oxide device
Weiyan Liu (2015)
Improved modeling of nanocrystals from atomic pair distribution function data
Soham Banerjee (2020)
Equilibrium atomic conformation of Pt2Ru3 nanoparticles under gas atmosphere of CO/H2 investigated by density functional theory and Monte Carlo simulation
K. Alam (2018)
Surface Segregation in Bimetallic Nanoparticles: A Critical Issue in Electrocatalyst Engineering.
Hanbin Liao (2015)
Study of core–shell platinum-based catalyst for methanol and ethylene glycol oxidation
D. Kaplan (2011)
Structure–property–activity correlations of Pt-bimetallic nanoparticles: A theoretical study
Qingying Jia (2013)
Robust Phase Control through Hetero-Seeded Epitaxial Growth for Face-Centered Cubic Pt@Ru Nanotetrahedrons with Superior Hydrogen Electro-Oxidation Activity
J. Gu (2015)
X-ray spectroscopic and scattering methods applied to the characterisation of cobalt-based Fischer–Tropsch synthesis catalysts
J. J. Herbert (2016)
Synthesis and X ‐ ray Characterization of Cobalt Phosphide ( Co 2 P ) Nanorods for the Oxygen Reduction Reaction
Vicky V. T. Doan-Nguyen (2015)
One-step seeding growth of magnetically recyclable Au@Co core-shell nanoparticles: highly efficient catalyst for hydrolytic dehydrogenation of ammonia borane.
Jun-Min Yan (2010)
Facile sonochemical synthesis of carbon nanotube-supported bimetallic Pt–Rh nanoparticles for room temperature hydrogenation of arenes
Horng-Bin Pan (2011)
Effect of heat treatment on the electrocatalytic properties of nano-structured Ru cores with Pt shells
Mikhail Tsypkin (2013)
Platinum catalyzed growth of NiPt hollow spheres with an ultrathin shell
Q. Sun (2011)
Current advances in precious metal core–shell catalyst design
X. Wang (2014)
Structural evolution of bimetallic Pd-Ru catalysts in oxidative and reductive applications
Jing Shen (2015)
Pt–Ru electrocatalysts for fuel cells: developments in the last decade
Y. V. Tolmachev (2016)
Bimetallic nanoalloys in heterogeneous catalysis of industrially important reactions: synergistic effects and structural organization of active components
O. G. Éllert (2014)
Preparation of highly active heterogeneous Au@Pd bimetallic catalyst using plant tannin grafted collagen fiber as the matrix
J. Ma (2013)
A General Perspective of the Characterization and Quantification of Nanoparticles: Imaging, Spectroscopic, and Separation Techniques
A. Lapresta-Fernández (2014)
A novel synthetic route for the preparation of core shell like carbon-supported nanoparticles with a Pt-rich shell
Youngick Cho (2014)
PtSn intermetallic, core-shell, and alloy nanoparticles as CO-tolerant electrocatalysts for H2 oxidation.
Z. Liu (2010)
Influence of electrolyte chemistry on the structure and reactivity of Fe(III) precipitates generated by Fe(0) electrocoagulation: Implications for low-cost arsenic treatment
Van Genuchten (2013)
See more
Semantic Scholar Logo Some data provided by SemanticScholar