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

Title: Local atomic structure in disordered and nanocrystalline catalytic materials.

Abstract

The power of the atomic pair density function method to study the local atomic structure of dispersed materials is discussed for three examples (I) supercapacitor hydrous ruthenia, (II) electroctalyst platinum-iron phosphate and (III) nanoparticle gold catalyst. Hydrous ruthenia appears to be amorphous, but was found to be nanocomposite with RuO{sub 2} nanocrystals supporting electronic and hydrous boundaries protonic conductivity. A platinum-iron phosphate electrocatalyst, that exhibits activity for the oxygen reduction reaction has platinum in a non-metallic state. In catalysts comprised of gold nanoparticles supported on TiO{sub 2}, atomic correlations in the second atomic shell were observed suggesting interaction with the support that could modify gold chemical activity.

Authors:
 [1];  [1];  [2];  [3];  [4]
  1. University of Tennessee, Knoxville (UTK)
  2. Naval Research Laboratory, Washington, D.C.
  3. ORNL
  4. {Steve} H [ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
972002
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Zeitschrift fur Kristallographie; Journal Volume: 222; Journal Issue: 11
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; CATALYSTS; ELECTRONIC STRUCTURE; GOLD; IRON PHOSPHATES; PLATINUM; RUTHENIUM OXIDES; NANOSTRUCTURES; DENSITY FUNCTIONAL METHOD

Citation Formats

Dmowski, W., Egami, T., Swider-Lyons, K., Dai, Sheng, and Overbury, Steven. Local atomic structure in disordered and nanocrystalline catalytic materials.. United States: N. p., 2007. Web. doi:10.1524/zkri.2007.222.11.617.
Dmowski, W., Egami, T., Swider-Lyons, K., Dai, Sheng, & Overbury, Steven. Local atomic structure in disordered and nanocrystalline catalytic materials.. United States. doi:10.1524/zkri.2007.222.11.617.
Dmowski, W., Egami, T., Swider-Lyons, K., Dai, Sheng, and Overbury, Steven. Mon . "Local atomic structure in disordered and nanocrystalline catalytic materials.". United States. doi:10.1524/zkri.2007.222.11.617.
@article{osti_972002,
title = {Local atomic structure in disordered and nanocrystalline catalytic materials.},
author = {Dmowski, W. and Egami, T. and Swider-Lyons, K. and Dai, Sheng and Overbury, Steven},
abstractNote = {The power of the atomic pair density function method to study the local atomic structure of dispersed materials is discussed for three examples (I) supercapacitor hydrous ruthenia, (II) electroctalyst platinum-iron phosphate and (III) nanoparticle gold catalyst. Hydrous ruthenia appears to be amorphous, but was found to be nanocomposite with RuO{sub 2} nanocrystals supporting electronic and hydrous boundaries protonic conductivity. A platinum-iron phosphate electrocatalyst, that exhibits activity for the oxygen reduction reaction has platinum in a non-metallic state. In catalysts comprised of gold nanoparticles supported on TiO{sub 2}, atomic correlations in the second atomic shell were observed suggesting interaction with the support that could modify gold chemical activity.},
doi = {10.1524/zkri.2007.222.11.617},
journal = {Zeitschrift fur Kristallographie},
number = 11,
volume = 222,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}