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

Title: A Discovery of Strong Metal–Support Bonding in Nanoengineered Au–Fe 3 O 4 Dumbbell-like Nanoparticles by in Situ Transmission Electron Microscopy

Journal Article · · Nano Letters
 [1];  [1];  [1];  [1];  [2];  [1];  [3];  [3];  [1];  [2];  [1];  [1];  [1]
  1. Purdue Univ., West Lafayette, IN (United States)
  2. Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Chemical and Biomolecular Engineering
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)

The strength of metal-support bonding in heterogeneous catalysts determines their thermal stability, therefore, a tremendous amount of effort has been expended to understand metal-support interactions. Herein, we report the discovery of an anomalous “strong metal-support bonding” between gold nanoparticles and “nano-engineered” Fe3O4 substrates by in-situ microscopy. During in-situ vacuum annealing of Au-Fe3O4 dumbbell-like nanoparticles, synthesized by the epitaxial growth of nano-Fe3O4 on Au nanoparticles, the gold nanoparticles transform into the monolayered gold thinfilms and wet the surface of nano-Fe3O4, as the surface reduction of nano-Fe3O4 proceeds. This phenomenon results from a unique coupling of the size-and shape-dependent high surface reducibility of nano-Fe3O4 and the extremely strong adhesion between Au and the reduced Fe3O4. This strong-metal support bonding reveals the significance of controlling the metal oxide support size and morphology for optimizing metal-support bonding and, ultimately, for the development of improved catalysts and functional nanostructures.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1399979
Journal Information:
Nano Letters, Vol. 17, Issue 8; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

References (38)

Ceria Maintains Smaller Metal Catalyst Particles by Strong Metal-Support Bonding journal August 2010
Vapor phase hydrochlorination of acetylene: Correlation of catalytic activity of supported metal chloride catalysts journal November 1985
Novel Gold Catalysts for the Oxidation of Carbon Monoxide at a Temperature far Below 0 °C journal February 1987
Gold Catalysis journal December 2006
Rutile-Supported Ir, Au, and Ir−Au Catalysts for CO Oxidation journal July 2010
Active Nonmetallic Au and Pt Species on Ceria-Based Water-Gas Shift Catalysts journal August 2003
Activity of CeOx and TiOx Nanoparticles Grown on Au(111) in the Water-Gas Shift Reaction journal December 2007
Stabilized Gold Nanoparticles on Ceria Nanorods by Strong Interfacial Anchoring journal December 2012
‘Shape effects’ in metal oxide supported nanoscale gold catalysts journal January 2011
Nanocrystalline CeO2 Increases the Activity of Au for CO Oxidation by Two Orders of Magnitude journal May 2004
Dumbbell-like Bifunctional Au−Fe 3 O 4 Nanoparticles journal February 2005
Colloidal deposition synthesis of supported gold nanocatalysts based on Au–Fe3O4 dumbbell nanoparticles journal January 2008
Synthetic Tuning of the Catalytic Properties of Au-Fe3O4 Nanoparticles journal January 2010
Ab initio molecular dynamics for open-shell transition metals journal November 1993
Ab initio molecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium journal May 1994
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Projector augmented-wave method journal December 1994
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Relaxed core projector-augmented-wave method journal September 2006
Generalized Gradient Approximation Made Simple [Phys. Rev. Lett. 77, 3865 (1996)] journal February 1997
Generalized Gradient Approximation Made Simple journal October 1996
Band theory and Mott insulators: Hubbard U instead of Stoner I journal July 1991
Density-functional theory and strong interactions: Orbital ordering in Mott-Hubbard insulators journal August 1995
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
Implementation of the projector augmented-wave LDA+U method: Application to the electronic structure of NiO journal December 2000
Special points for Brillouin-zone integrations journal June 1976
Composition, structure, and stability of RuO 2 ( 110 ) as a function of oxygen pressure journal December 2001
Comparative study of Pt, Au and Ag growth on Fe3O4(001) surface journal July 2006
Epitaxial growth of Au and Pt on Fe3O4(111) surface journal February 2007
A DFT study of the structures, stabilities and redox behaviour of the major surfaces of magnetite Fe 3 O 4 journal January 2014
Morphology-Controlled Synthesis of Magnetites with Nanoporous Structures and Excellent Magnetic Properties journal December 2007
Bonding of Gold Nanoclusters to Oxygen Vacancies on Rutile T i O 2 ( 110 ) journal January 2003
Interaction of Au with titania: the role of reduced Ti journal June 2007
Raman Analysis of Mode Softening in Nanoparticle CeO 2−δ and Au-CeO 2−δ during CO Oxidation journal August 2011
X-ray photoelectron spectroscopic studies of iron oxides journal September 1977
Investigation of multiplet splitting of Fe 2p XPS spectra and bonding in iron compounds journal January 2004
Change of Magnetic Properties and Structure in Fe3O4 Films on Si Substrates with Annealing Temperature journal January 2008
An x‐ray photoelectron spectroscopy study of Au x In y alloys
  • Jayne, Douglas T.; Fatemi, Navid S.; Weizer, Victor G.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 9, Issue 3 https://doi.org/10.1116/1.577637
journal May 1991

Cited By (1)

Recent Advances in Magnetite Nanoparticle Functionalization for Nanomedicine journal December 2019

Similar Records

Self-assembly of Janus Dumbbell Nanocrystals and Their Enhanced Surface Plasmon Resonance
Journal Article · Wed Dec 26 00:00:00 EST 2018 · Nano Letters · OSTI ID:1399979

Exchange bias effect in Au-Fe3O4 dumbbell nanoparticles induced by the charge transfer from gold
Journal Article · Mon Aug 10 00:00:00 EDT 2015 · Physical Review. B, Condensed Matter and Materials Physics · OSTI ID:1399979

Catalysis Science Initiative: Catalyst Design by Discovery Informatics
Technical Report · Fri Jul 08 00:00:00 EDT 2016 · OSTI ID:1399979