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Title: Determination of bimetallic architectures in nanometer-scale catalysts by combining molecular dynamics simulations with x-ray absorption spectroscopy

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4978500· OSTI ID:1388332

In this study, we present an approach for the determination of an atomic structure of small bimetallic nanoparticles by combining extended X-ray absorption fine structure spectroscopy and classical molecular dynamics simulations based on the Sutton-Chen potential. The proposed approach is illustrated in the example of PdAu nanoparticles with ca 100 atoms and narrow size and compositional distributions. Using a direct modeling approach and no adjustable parameters, we were able to reproduce the size and shape of nanoparticles as well as the intra-particle distributions of atoms and metal mixing ratios and to explore the influence of these parameters on the local structure and dynamics in nanoparticles.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Catalysis Center for Energy Innovation (CCEI)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001004
OSTI ID:
1388332
Journal Information:
Journal of Chemical Physics, Vol. 146, Issue 11; Related Information: CCEI partners with the University of Delaware (lead); Brookhaven National Laboratory; California Institute of Technology; Columbia University; University of Delaware; Lehigh University; University of Massachusetts, Amherst; Massachusetts Institute of Technology; University of Minnesota; Pacific Northwest National Laboratory; University of Pennsylvania; Princeton University; Rutgers University; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

References (43)

Applications of extended X-ray absorption fine-structure spectroscopy to studies of bimetallic nanoparticle catalysts journal January 2012
Reverse Monte Carlo Simulation: A New Technique for the Determination of Disordered Structures journal December 1988
Characterization of Palladium Nanoparticles by Using X-ray Reflectivity, EXAFS, and Electron Microscopy journal January 2006
Molecular Dynamics Simulations of Supported Pt Nanoparticles with a Hybrid Sutton–Chen Potential journal June 2016
Wavelet data analysis of EXAFS spectra journal June 2009
The Problem with Determining Atomic Structure at the Nanoscale journal April 2007
A View from the Inside:  Complexity in the Atomic Scale Ordering of Supported Metal Nanoparticles journal December 2001
Operando Effects on the Structure and Dynamics of Pt n Sn m /γ-Al 2 O 3 from Ab Initio Molecular Dynamics and X-ray Absorption Spectra journal June 2013
Carbon-Supported IrNi Core–Shell Nanoparticles: Synthesis, Characterization, and Catalytic Activity journal May 2011
A New Core/Shell NiAu/Au Nanoparticle Catalyst with Pt-like Activity for Hydrogen Evolution Reaction journal May 2015
Probing structural relaxation in nanosized catalysts by combining EXAFS and reverse Monte Carlo methods journal February 2017
Alloy catalysts designed from first principles journal October 2004
Modeling the Structure and Composition of Nanoparticles by Extended X-Ray Absorption Fine-Structure Spectroscopy journal July 2011
Complex structural dynamics of nanocatalysts revealed in Operando conditions by correlated imaging and spectroscopy probes journal June 2015
Quantum-size effects in the thermodynamic properties of metallic nanoparticles journal December 1996
Noncrystalline-to-Crystalline Transformations in Pt Nanoparticles journal August 2013
A theoretical and experimental examination of systematic ligand-induced disorder in Au dendrimer-encapsulated nanoparticles journal January 2013
Model of the local structure of random ternary alloys: Experiment versus theory journal June 1985
Local ordering of nanostructured Pt probed by multiple-scattering XAFS journal September 2007
Solving the 3D structure of metal nanoparticles journal January 2007
Shape-Dependent Catalytic Properties of Pt Nanoparticles journal November 2010
Short-range disorder in pseudobinary ionic alloys journal May 2002
Design of Pt-Shell Nanoparticles with Alloy Cores for the Oxygen Reduction Reaction journal September 2013
Fitting EXAFS data using molecular dynamics outputs and a histogram approach journal February 2012
EXAFS study of hydrogen intercalation into ReO 3 using the evolutionary algorithm journal January 2014
Erratum: Permanent Magnetism, Magnetic Anisotropy, and Hysteresis of Thiol-Capped Gold Nanoparticles [Phys. Rev. Lett. 93 , 087204 (2004)] journal February 2005
A combined theoretical and experimental EXAFS study of the structure and dynamics of Au 147 nanoparticles journal January 2016
Identifying the Atomic-Level Effects of Metal Composition on the Structure and Catalytic Activity of Peptide-Templated Materials journal October 2015
Magnetically Recyclable Fe@Pt Core−Shell Nanoparticles and Their Use as Electrocatalysts for Ammonia Borane Oxidation: The Role of Crystallinity of the Core journal March 2009
Investigation of the extended X-ray absorption fine structure (EXAFS) at L-edges of heavy elements journal March 1979
Reverse Monte Carlo modeling of thermal disorder in crystalline materials from EXAFS spectra journal June 2012
Long-range Finnis–Sinclair potentials journal March 1990
Short range order in bimetallic nanoalloys: An extended X-ray absorption fine structure study journal February 2013
Probing the Limits of Conventional Extended X-ray Absorption Fine Structure Analysis Using Thiolated Gold Nanoparticles journal February 2015
Computational Design of Alloy-Core@Shell Metal Nanoparticle Catalysts journal December 2014
Geometrical Characteristics of Regular Polyhedra: Application to EXAFS Studies of Nanoclusters
  • Glasner, Dana; Frenkel, Anatoly I.
  • X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference, AIP Conference Proceedings https://doi.org/10.1063/1.2644651
conference January 2007
Toward computational screening in heterogeneous catalysis: Pareto-optimal methanation catalysts journal April 2006
Optical properties of metallic nanoparticles: influence of interface effects and interband transitions journal May 2004
Generalized Ramsauer-Townsend effect in extended x-ray-absorption fine structure journal November 1988
On the road to metallic nanoparticles by rational design: bridging the gap between atomic-level theoretical modeling and reality by total scattering experiments journal January 2015
Effects of surface disorder on EXAFS modeling of metallic clusters journal March 2010
Catalytic Activity of Pd/Cu Random Alloy Nanoparticles for Oxygen Reduction journal May 2011
Alloy Catalysts Designed from First Principles. journal January 2005

Cited By (4)

Covalent Organic Frameworks as a Decorating Platform for Utilization and Affinity Enhancement of Chelating Sites for Radionuclide Sequestration journal March 2018
Machine learning for heterogeneous catalyst design and discovery journal May 2018
DFT studies on geometrical structures, stabilities, and electronic properties of AlnCr(n = 1-24) clusters journal December 2018
Determination of Single- and Multi-Component Nanoparticle Sizes by X-ray Absorption Spectroscopy journal January 2018