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Title: CO oxidation on gold-supported iron oxides: New insights into strong oxide–metal interactions

Journal Article · · Journal of Physical Chemistry. C
 [1];  [2];  [1];  [3];  [4];  [4]
  1. Xiamen Univ., Xiamen (China); Dalian Institute of Chemical Physics, Dalian (China)
  2. Xiamen Univ., Xiamen (China)
  3. Univ. Central de Venezuela, Caracas (Venezuela)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)

Very active FeOx–Au catalysts for CO oxidation are obtained after depositing nanoparticles of FeO, Fe3O4, and Fe2O3 on a Au(111) substrate. Neither FeO nor Fe2O3 is stable under the reaction conditions. Under an environment of CO/O2, they undergo oxidation (FeO) or reduction (Fe2O3) to yield nanoparticles of Fe3O4 that are not formed in a bulk phase. Using a combined experimental and theoretical approach, we show a strong oxide–metal interaction (SOMI) between Fe3O4 nanostructures and Au(111), which gives the oxide special properties, allows the formation of an active phase, and provides a unique interface to facilitate a catalytic reaction. This work highlights the important role that the SOMI can play in enhancing the catalytic performance of the oxide component in metal–oxide catalysts.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
21303195; 21473191; 2013CB933100; SC0012704
OSTI ID:
1222616
Report Number(s):
BNL-108422-2015-JA; R&D Project: CO009; KC0302010
Journal Information:
Journal of Physical Chemistry. C, Vol. 119, Issue 29; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 57 works
Citation information provided by
Web of Science

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Growth and structural studies of In/Au(111) alloys and InO x /Au(111) inverse oxide/metal model catalysts journal February 2020
Strong metal–support interactions between palladium nanoclusters and hematite toward enhanced acetylene dicarbonylation at low temperature journal January 2020
Stabilitätsanforderungen von Elektrokatalysatoren für die Sauerstoffentwicklung: der Weg zu einem grundlegenden Verständnis und zur Minimierung der Katalysatordegradation journal May 2017
CO 2 Hydrogenation over Oxide-Supported PtCo Catalysts: The Role of the Oxide Support in Determining the Product Selectivity journal May 2016
Engineering the Metal/Oxide Interface of Pd Nanowire@CuO x Electrocatalysts for Efficient Alcohol Oxidation Reaction journal December 2019
Geometrical Structure of the Gold-Iron(III) Oxide Interfacial Perimeter for CO Oxidation journal July 2018
The Stability Challenges of Oxygen Evolving Catalysts: Towards a Common Fundamental Understanding and Mitigation of Catalyst Degradation journal May 2017
CO 2 Hydrogenation over Oxide-Supported PtCo Catalysts: The Role of the Oxide Support in Determining the Product Selectivity journal May 2016
Geometrical Structure of the Gold-Iron(III) Oxide Interfacial Perimeter for CO Oxidation journal July 2018
Controlled fabrication and microwave absorbing mechanism of hollow Fe3O4@C microspheres journal April 2017
Structural transformation of Pd-α-Fe 2 O 3 and Pd-γ-Fe 2 O 3 catalysts and application in the CO oxidation reaction journal January 2017
Design Rules for Self‐Assembly of 2D Nanocrystal/Metal–Organic Framework Superstructures journal September 2018
Metal Clusters Dispersed on Oxide Supports: Preparation Methods and Metal-Support Interactions journal May 2018