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

Title: Noncrystalline-to-Crystalline Transformations in Pt Nanoparticles

Abstract

We show that the noncrystalline-to-crystalline transition of supported Pt nanoparticles (NPs) in the subnanometer to nanometer size range is statistical in nature, and strongly affected by particle size, support, and adsorbates (here we use H2). Unlike in the bulk, a noncrystalline phase exists and is stable in small NPs, reflecting a general mesoscopic feature. Observations of >3000 particles by high-resolution transmission electron microscopy show a noncrystalline-to-crystalline transition zone that is nonabrupt; there is a size regime where disordered and ordered NPs coexist. The NP size at which this transition occurs is strongly dependent on both the adsorbate and the support, and this effect is general for late 5d transition metals. All results are reconciled via a statistical description of particle-support-adsorbate interactions.

Authors:
 [1];  [2];  [2];  [1];  [3];  [3];  [3];  [4];  [4];  [1];  [5];  [6];  [1]
  1. University of Pittsburgh
  2. Ames Laboratory
  3. University of Illinois
  4. Yeshiva University
  5. Lawrence Berkeley National Laboratory
  6. Brookhaven National Laboratory
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1134618
Report Number(s):
IS-J 8238
Journal ID: ISSN 0002-7863
DOE Contract Number:  
DE-AC02-07CH11358
Resource Type:
Journal Article
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 135; Journal Issue: 35; Journal ID: ISSN 0002-7863
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Catalysis, Reaction Kinetics, Inorganic Reaction Mechanisms

Citation Formats

Li, Long, Wang, Lin-Lin, Johnson, Duane D., Zhang, Zhongfan, Sanchez, Sergio I., Kang, Joo H., Nuzzo, Ralph G., Wang, Qi, Frenkel, Anatoly I., Li, Jie, Ciston, James, Stach, Eric A., and Yang, Judith C. Noncrystalline-to-Crystalline Transformations in Pt Nanoparticles. United States: N. p., 2013. Web. doi:10.1021/ja405497p.
Li, Long, Wang, Lin-Lin, Johnson, Duane D., Zhang, Zhongfan, Sanchez, Sergio I., Kang, Joo H., Nuzzo, Ralph G., Wang, Qi, Frenkel, Anatoly I., Li, Jie, Ciston, James, Stach, Eric A., & Yang, Judith C. Noncrystalline-to-Crystalline Transformations in Pt Nanoparticles. United States. https://doi.org/10.1021/ja405497p
Li, Long, Wang, Lin-Lin, Johnson, Duane D., Zhang, Zhongfan, Sanchez, Sergio I., Kang, Joo H., Nuzzo, Ralph G., Wang, Qi, Frenkel, Anatoly I., Li, Jie, Ciston, James, Stach, Eric A., and Yang, Judith C. 2013. "Noncrystalline-to-Crystalline Transformations in Pt Nanoparticles". United States. https://doi.org/10.1021/ja405497p.
@article{osti_1134618,
title = {Noncrystalline-to-Crystalline Transformations in Pt Nanoparticles},
author = {Li, Long and Wang, Lin-Lin and Johnson, Duane D. and Zhang, Zhongfan and Sanchez, Sergio I. and Kang, Joo H. and Nuzzo, Ralph G. and Wang, Qi and Frenkel, Anatoly I. and Li, Jie and Ciston, James and Stach, Eric A. and Yang, Judith C.},
abstractNote = {We show that the noncrystalline-to-crystalline transition of supported Pt nanoparticles (NPs) in the subnanometer to nanometer size range is statistical in nature, and strongly affected by particle size, support, and adsorbates (here we use H2). Unlike in the bulk, a noncrystalline phase exists and is stable in small NPs, reflecting a general mesoscopic feature. Observations of >3000 particles by high-resolution transmission electron microscopy show a noncrystalline-to-crystalline transition zone that is nonabrupt; there is a size regime where disordered and ordered NPs coexist. The NP size at which this transition occurs is strongly dependent on both the adsorbate and the support, and this effect is general for late 5d transition metals. All results are reconciled via a statistical description of particle-support-adsorbate interactions.},
doi = {10.1021/ja405497p},
url = {https://www.osti.gov/biblio/1134618}, journal = {Journal of the American Chemical Society},
issn = {0002-7863},
number = 35,
volume = 135,
place = {United States},
year = {Fri Jul 19 00:00:00 EDT 2013},
month = {Fri Jul 19 00:00:00 EDT 2013}
}