skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Modelling and validation of particle size distributions of supported nanoparticles using the pair distribution function technique

Journal Article · · Journal of Applied Crystallography (Online)

The particle size of supported catalysts is a key characteristic for determining structure–property relationships. It is a challenge to obtain this information accurately and in situ using crystallographic methods owing to the small size of such particles (<5 nm) and the fact that they are supported. In this work, the pair distribution function (PDF) technique was used to obtain the particle size distribution of supported Pt catalysts as they grow under typical synthesis conditions. The PDF of Pt nanoparticles grown on zeolite X was isolated and refined using two models: a monodisperse spherical model (single particle size) and a lognormal size distribution. The results were compared and validated using scanning transmission electron microscopy (STEM) results. Both models describe the same trends in average particle size with temperature, but the results of the number-weighted lognormal size distributions can also accurately describe the mean size and the width of the size distributions obtained from STEM. Since the PDF yields crystallite sizes, these results suggest that the grown Pt nanoparticles are monocrystalline. As a result, this work shows that refinement of the PDF of small supported monocrystalline nanoparticles can yield accurate mean particle sizes and distributions.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704
OSTI ID:
1357953
Report Number(s):
BNL-113663-2017-JA; JACGAR; R&D Project: PM032; KC0202010
Journal Information:
Journal of Applied Crystallography (Online), Vol. 50, Issue 3; ISSN 1600-5767
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

References (45)

SAXS study of the kinetics of formation of ZnO colloidal suspensions journal June 1999
Beyond crystallography: the study of disorder, nanocrystallinity and crystallographically challenged materials with pair distribution functions journal January 2004
Support effects on electronic structure of platinum clusters in Y zeolite journal May 1991
Detection and characterization of nanoparticles in suspension at low concentrations using the X-ray total scattering pair distribution function technique journal January 2015
Preparation of Highly Dispersed Pt Particles in Zeolite Y with a Narrow Particle Size Distribution: Characterization by Hydrogen Chemisorption, TEM, EXAFS Spectroscopy, and Particle Modeling journal October 2001
Evidence for Anomalous Bond Softening and Disorder Below 2 nm Diameter in Carbon-Supported Platinum Nanoparticles from the Temperature-Dependent Peak Width of the Atomic Pair Distribution Function journal March 2013
In Situ UV/Vis, SAXS, and TEM Study of Single-Phase Gold Nanoparticle Growth journal February 2012
Robust structure and morphology parameters for CdS nanoparticles by combining small-angle X-ray scattering and atomic pair distribution function data in a complex modeling framework journal March 2014
Location and dispersion of platinum in PtY zeolites journal September 1975
Tailoring the particle size of sol–gel derived silver nanoparticles in SiO2 journal June 2001
PDFgetX3 : a rapid and highly automatable program for processing powder diffraction data into total scattering pair distribution functions journal March 2013
In Situ Study on the Evolution of Multimodal Particle Size Distributions of ZnO Quantum Dots: Some General Rules for the Occurrence of Multimodalities journal November 2015
Quantitative size-dependent structure and strain determination of CdSe nanoparticles using atomic pair distribution function analysis journal September 2007
Reciprocal-space instrumental effects on the real-space neutron atomic pair distribution function journal January 2004
On the determination of platinum particle size in carbon-supported platinum electrocatalysts for fuel cell applications journal January 2003
Nitrogen-doped coatings on carbon nanotubes and their stabilizing effect on Pt nanoparticles journal January 2012
Agglomerative Sintering of an Atomically Dispersed Ir 1 /Zeolite Y Catalyst: Compelling Evidence Against Ostwald Ripening but for Bimolecular and Autocatalytic Agglomeration Catalyst Sintering Steps journal May 2015
Complex modeling: a strategy and software program for combining multiple information sources to solve ill posed structure and nanostructure inverse problems journal September 2015
Determination of Nanocrystal Sizes:  A Comparison of TEM, SAXS, and XRD Studies of Highly Monodisperse CoPt 3 Particles journal March 2005
Effect of using polyimide capillaries during thermal experiments on the particle size distribution of supported Pt nanoparticles journal September 2015
Finite size effects of nanoparticles on the atomic pair distribution functions journal October 2006
N-methyl isatin nanoparticles as a novel probe for selective detection of Cd2+ ion in aqueous medium based on chelation enhanced fluorescence and application to environmental sample journal December 2015
Pt agglomeration and entombment in single channel zeolites: Pt/LTL journal April 1999
Catalytic structure and reaction performance of PtSnK/ZSM-5 catalyst for propane dehydrogenation: influence of impregnation strategy journal June 2015
Complementary Structure Sensitive and Insensitive Catalytic Relationships journal January 2009
PDFfit2 and PDFgui: computer programs for studying nanostructure in crystals journal July 2007
Particle Size Distribution of an Ni/SiO2 Catalyst Determined by ASAXS journal February 2000
Mercaptosilane-Assisted Synthesis of Metal Clusters within Zeolites and Catalytic Consequences of Encapsulation journal July 2010
Nucleation and Growth of Metal Nanoparticles during Photoreduction Using In Situ Time-Resolved SAXS Analysis journal June 2011
Fragmentation mechanism of the generation of colloidal copper( i ) iodide nanoparticles by pulsed laser irradiation in liquids journal January 2015
Particle-Support Interferences in Small-Angle X-Ray Scattering from Supported-Catalyst Materials journal February 2015
Supported Metal Clusters: Synthesis, Structure, and Catalysis journal May 1995
Structures of Alkali Metals in Silica Gel Nanopores:  New Materials for Chemical Reductions and Hydrogen Production journal February 2007
Size and composition distribution dynamics of alloy nanoparticle electrocatalysts probed by anomalous small angle X-ray scattering (ASAXS) journal January 2009
Relationship between the atomic pair distribution function and small-angle scattering: implications for modeling of nanoparticles journal April 2009
Nanocrystalline domain size distributions from powder diffraction data journal July 2004
Gold Nanocluster Agglomeration Kinetic Studies: Evidence for Parallel Bimolecular Plus Autocatalytic Agglomeration Pathways as a Mechanism-Based Alternative to an Avrami-Based Analysis journal May 2012
mixtools : An R Package for Analyzing Finite Mixture Models journal January 2009
FIT2D : a multi-purpose data reduction, analysis and visualization program journal March 2016
Two-dimensional detector software: From real detector to idealised image or two-theta scan journal January 1996
In Situ Anomalous Small-Angle X-ray Scattering Investigation of Carbon-Supported Electrocatalysts journal October 1997
Watching Nanoparticles Grow:  The Mechanism and Kinetics for the Formation of TiO 2 -Supported Platinum Nanoparticles journal November 2007
Pair distribution function and structure factor of spherical particles journal March 2006
Accuracy of pair distribution function analysis applied to crystalline and non-crystalline materials journal May 1992
Application of high-energy X-rays and Pair-Distribution-Function analysis to nano-scale structural studies in catalysis journal July 2009

Cited By (1)

X-ray total scattering study of magic-size clusters and quantum dots of cadmium sulphide journal January 2019