Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Pair distribution function analysis of discrete nanomaterials in PDFgui

Journal Article · · Journal of Applied Crystallography (Online)
Pair distribution functions (PDFs) are a leading tool for atomic structure analysis of nanomaterials. However, the most widely used programs for refining atomic structure against PDF data are based on extended crystallographic models, which cannot be applied to discrete, whole nanoparticles. Furthermore, this work describes a straightforward approach to simulate and refine atomistic models of discrete clusters and nanoparticles employing widely used PDF modelling programs such as PDFgui that utilize extended crystallographic models. In this approach, the whole particle to be modelled is contained within an expanded, and otherwise empty, unit cell that is sufficiently large to avoid correlations between atoms in neighbouring unit cells over the r range analyzed. The PDF of the particle is simulated as a composite using two conventional `phases': one that calculates the atom–atom correlations and one that approximates the local number density. This approach is first validated for large nanoparticles that are well modelled by a conventional shape factor model, and then applied to simulate the PDF of discrete particles and low-dimensional materials (graphene and MXene) and to model the experimental PDF data for single-layer FeS nanosheets. A comparison of this approach with the DiffPy-CMI program, which calculates the PDF of discrete species, shows that the composite modelling approach is equally or more accurate. Example input files for implementing this approach within PDFgui and TOPAS, and recommendations for selecting model parameters for reliable application of this refinement strategy, are provided.
Research Organization:
University of Chicago, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
SC0012702; SC0012704; SC0019212; SC0023383
OSTI ID:
2404489
Journal Information:
Journal of Applied Crystallography (Online), Journal Name: Journal of Applied Crystallography (Online) Journal Issue: 2 Vol. 56; ISSN 1600-5767
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English

References (47)

Ligand‐Protected Au 55 with a Novel Structure and Remarkable CO 2 Electroreduction Performance journal August 2021
A new determination of the structure of water at 25°C journal August 1986
Neutron diffraction studies of Ti3Si0.9Al0.1C2 compound journal September 2005
Homologous Structural, Chemical, and Biological Behavior of Sc and Lu Complexes of the Picaga Bifunctional Chelator: Toward Development of Matched Theranostic Pairs for Radiopharmaceutical Applications journal December 2020
Resolving the Structure of Ti 3 C 2 T x MXenes through Multilevel Structural Modeling of the Atomic Pair Distribution Function journal December 2015
Quantitative Analysis of the Morphology of {101} and {001} Faceted Anatase TiO 2 Nanocrystals and Its Implication on Photocatalytic Activity journal June 2017
Resolving Single-layer Nanosheets as Short-lived Intermediates in the Solution Synthesis of FeS journal April 2021
Nanoporous Structure and Medium-Range Order in Synthetic Amorphous Calcium Carbonate journal May 2010
A Comparison of Neptunyl(V) and Neptunyl(VI) Solution Coordination: The Stability of Cation−Cation Interactions journal June 2008
Structure of V 2 O 5 · n H 2 O Xerogel Solved by the Atomic Pair Distribution Function Technique journal August 2002
Chasing Changing Nanoparticles with Time-Resolved Pair Distribution Function Methods journal March 2012
Revealing the Mechanisms behind SnO 2 Nanoparticle Formation and Growth during Hydrothermal Synthesis: An In Situ Total Scattering Study journal April 2012
Computational and Experimental Characterization of the Ligand Environment of a Ni-Oxo Catalyst Supported in the Metal–Organic Framework NU-1000 journal January 2023
Study of Supported PtCu and PdAu Bimetallic Nanoparticles Using In-Situ X-ray Tools journal June 2010
Mechanisms for Iron Oxide Formation under Hydrothermal Conditions: An in Situ Total Scattering Study journal October 2014
Radial Distribution Functions from Small Packings of Spheres journal February 1968
Molecular segregation observed in a concentrated alcohol–water solution journal April 2002
Polymorphism in magic-sized Au144(SR)60 clusters journal June 2016
Single-atom gold oxo-clusters prepared in alkaline solutions catalyse the heterogeneous methanol self-coupling reactions journal October 2019
Intrinsic glassy-metallic transport in an amorphous coordination polymer journal October 2022
Solvation structure and energetics of electrolytes for multivalent energy storage journal January 2014
Cluster–π electronic interaction in a superatomic Au 13 cluster bearing σ-bonded acetylide ligands journal January 2015
Mechanistic insights into sodium storage in hard carbon anodes using local structure probes journal January 2016
Reverse Monte Carlo Simulation: A New Technique for the Determination of Disordered Structures journal December 1988
Neutron and x-ray diffraction studies of liquids and glasses journal November 2005
Reverse Monte Carlo modelling journal November 2001
PDFfit2 and PDFgui: computer programs for studying nanostructure in crystals journal July 2007
Short-range atomic structure of Nd 2 − x Ce x CuO 4 − y determined by real-space refinement of neutron-powder-diffraction data journal June 1993
A comparison of various commonly used correlation functions for describing total scattering journal April 2001
Application of the reverse Monte Carlo method to crystalline materials journal September 2001
Finite size effects on the real-space pair distribution function of nanoparticles journal May 2008
Building and refining complete nanoparticle structures with total scattering data journal February 2011
PDFFIT , a program for full profile structural refinement of the atomic pair distribution function journal June 1999
Finite size effects of nanoparticles on the atomic pair distribution functions journal October 2006
Fast synthesis and refinement of the atomic pair distribution function journal May 2015
DShaper : an approach for handling missing low- Q data in pair distribution function analysis of nanostructured systems journal October 2015
TOPAS and TOPAS-Academic : an optimization program integrating computer algebra and crystallographic objects written in C++ journal February 2018
Reverse Monte Carlo modeling for low-dimensional systems journal August 2019
Structure analysis of supported disordered molybdenum oxides using pair distribution function analysis and automated cluster modelling journal February 2020
Exact and fast calculation of the X-ray pair distribution function journal May 2020
Complex modeling: a strategy and software program for combining multiple information sources to solve ill posed structure and nanostructure inverse problems journal September 2015
Nanoparticles: Strained and Stiff journal July 2004
The Structure of Ferrihydrite, a Nanocrystalline Material journal June 2007
Porous Semiconducting Gels and Aerogels from Chalcogenide Clusters journal July 2007
Molten uranium dioxide structure and dynamics journal November 2014
New Insights into Complex Materials Using Reverse Monte Carlo Modeling journal July 2014
Synthesis and Rietveld crystal structure refinement of mackinawite, tetragonal FeS journal December 1995

Similar Records

Reverse Monte Carlo modeling for low-dimensional systems
Journal Article · Wed Aug 28 20:00:00 EDT 2019 · Journal of Applied Crystallography (Online) · OSTI ID:1665978

diffpy.mpdf: open-source software for magnetic pair distribution function analysis
Journal Article · Tue Aug 23 20:00:00 EDT 2022 · Journal of Applied Crystallography (Online) · OSTI ID:1887813