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Title: Hydrogen migration at restructuring palladium–silver oxide boundaries dramatically enhances reduction rate of silver oxide

Journal Article · · Nature Communications

Heterogeneous catalysts are complex materials with multiple interfaces. A critical proposition in exploiting bifunctionality in alloy catalysts is to achieve surface migration across interfaces separating functionally dissimilar regions. Herein, we demonstrate the enhancement of more than 104 in the rate of molecular hydrogen reduction of a silver surface oxide in the presence of palladium oxide compared to pure silver oxide resulting from the transfer of atomic hydrogen from palladium oxide islands onto the surrounding surface formed from oxidation of a palladium-silver alloy. The palladium-silver interface also dynamically restructures during reduction, resulting in silver-palladium intermixing. This study clearly demonstrates the migration of reaction intermediates and catalyst material across surface interfacial boundaries in alloys with a significant effect on surface reactivity, having broad implications for the catalytic function of bimetallic materials.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Integrated Mesoscale Architectures for Sustainable Catalysis (IMASC); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Harvard Univ., Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231; SC0012573
OSTI ID:
1695723
Alternate ID(s):
OSTI ID: 1843584
Journal Information:
Nature Communications, Vol. 11, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (65)

Mobility of Ag adatoms on Ag(100) journal May 1996
Phase diagrams for surface alloys journal September 1997
Dynamic restructuring drives catalytic activity on nanoporous gold–silver alloy catalysts journal December 2016
Thermodynamic and spectroscopic properties of oxygen on silver under an oxygen atmosphere journal January 2015
Catalyst deactivation via decomposition into single atoms and the role of metal loading journal August 2019
The reaction of atomic copper with chemisorbed hydrogen on ruthenium journal December 1985
Atomic and Molecular Adsorption on Ag(111) journal January 2018
Inverse Oxide/Metal Catalysts in Fundamental Studies and Practical Applications: A Perspective of Recent Developments journal June 2016
CO Oxidation on Inverse CeO x /Cu(111) Catalysts: High Catalytic Activity and Ceria-Promoted Dissociation of O 2 journal March 2011
Catalysis by alloys and bimetallic clusters journal January 1977
Activity of CeOx and TiOx Nanoparticles Grown on Au(111) in the Water-Gas Shift Reaction journal December 2007
Hydrogen Dissociation and Spillover on Individual Isolated Palladium Atoms journal December 2009
Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxide journal February 1989
Surface composition of clean and oxidized Pd75Ag25(100) from photoelectron spectroscopy and density functional theory calculations journal December 2012
Adsorbate-mediated strong metal–support interactions in oxide-supported Rh catalysts journal September 2016
Bimetallic Particle Formation in Pt–Re/Al2O3Reforming Catalysts Revealed by Energy-Dispersive X-Ray Spectrometry in the Analytical Electron Microscope journal May 1998
Reaction-Driven Restructuring of Rh-Pd and Pt-Pd Core-Shell Nanoparticles journal November 2008
Hydrogen Activation on Silver:  A Computational Study on Surface and Subsurface Oxygen Species journal February 2008
Alloys in catalysis: phase separation and surface segregation phenomena in response to the reactive environment journal January 2012
Hydrogen Spillover. Facts and Fiction journal February 2012
Kinetic modelling of the H2O2 reaction on Pd and of its influence on the hydrogen response of a hydrogen sensitive Pd metal-oxide-semiconductor device journal April 1996
A computational study of H 2 dissociation on silver surfaces: The effect of oxygen in the added row structure of Ag(110) journal January 2007
Density functional theory in surface chemistry and catalysis journal January 2011
Catalysis Science of Bulk Mixed Oxides journal April 2012
Evolution of steady-state material properties during catalysis: Oxidative coupling of methanol over nanoporous Ag0.03Au0.97 journal December 2019
Reactivity of methanol on TiO2 nanoparticles supported on the Au(111) surface journal October 2005
Surface mobility of Re2O7 in the system Re7+Pd0/$gamma;-Al2O3 journal May 1986
Catalyst support effects on hydrogen spillover journal January 2017
Spectroscopic Observation of Dual Catalytic Sites During Oxidation of CO on a Au/TiO2 Catalyst journal August 2011
Influence of Pretreatment Temperature on the Bimetallic Interactions in Pt-Re/Al2O3 Reforming Catalysts Studied by X-Ray Absorption Spectroscopy journal December 2001
The adsorption of water and oxygen on Ag(110): A study of the interactions among water molecules, hydroxyl groups, and oxygen atoms journal May 1987
Bimetallic catalysts for hydrogen generation journal January 2012
In Situ Spectroscopic Study of the Oxidation and Reduction of Pd(111) journal December 2005
Alloy formation and metal oxide segregation in PtRe/γ-AlO catalysts as investigated by temperature-programmed reduction journal October 1979
Dynamics of Surface Alloys: Rearrangement of Pd/Ag(111) Induced by CO and O 2 journal October 2018
Observation and simulation of hydrogen storage via spillover journal September 2018
Investigation of the Support Effect in Atomically Dispersed Pt on WO 3− x for Utilization of Pt in the Hydrogen Evolution Reaction journal November 2019
Direct observation of mobility and interactions of oxygen molecules chemisorbed on the Ag(110) surface journal May 1997
New approaches to hydrogen storage journal January 2009
The effect of drying temperature on the temperature-programmed reduction profile of a platinum/rhenium/alumina catalyst journal September 1982
Catalytic Role of Metal Oxides in Gold-Based Catalysts: A First Principles Study of CO Oxidation on T i O 2 Supported Au journal December 2003
Some recent theoretical advances in the understanding of the catalytic activity of Au journal September 2005
Activation of Cu(111) surface by decomposition into nanoclusters driven by CO adsorption journal January 2016
Many-electron singularity in X-ray photoemission and X-ray line spectra from metals journal February 1970
Low-Temperature Oxidation of CO over Gold Supported on TiO2, α-Fe2O3, and Co3O4 journal November 1993
Understanding Heterolytic H 2 Cleavage and Water-Assisted Hydrogen Spillover on Fe 3 O 4 (001)-Supported Single Palladium Atoms journal July 2019
Hydrogen Dissociation, Spillover, and Desorption from Cu-Supported Co Nanoparticles journal September 2014
Generalized nano-thermodynamic model for capturing size-dependent surface segregation in multi-metal alloy nanoparticles journal January 2018
Alloy surface segregation in reactive environments: First-principles atomistic thermodynamics study of Ag 3 Pd ( 111 ) in oxygen atmospheres journal February 2008
Adsorption of hydrogen on palladium single crystal surfaces journal February 1974
Alloy surfaces: segregation, reconstruction and phase transitions journal June 1999
Single atom alloy surface analogs in Pd0.18Cu15 nanoparticles for selective hydrogenation reactions journal January 2013
Structural evolution of atomically dispersed Pt catalysts dictates reactivity journal April 2019
Dissociative Adsorption of Hydrogen on PdO(101) Studied by HRCLS and DFT journal June 2013
Density functional calculations of hydrogen adsorption on palladium–silver alloy surfaces journal February 2003
Mechanisms for H 2 Reduction on the PdO{101} Surface and the Pd{100}-(√5 × √5) R 27°-O Surface Oxide journal August 2009
Temperature Programmed Reduction journal January 1982
Mesoscopic restructuring and mass transport of metal atoms during reduction of the Ag(111)-p(4×4)-O surface with CO journal February 2007
Highly porous non-precious bimetallic electrocatalysts for efficient hydrogen evolution journal March 2015
Chemisorption of atomic hydrogen on clean and Cl-covered Ag(111) journal August 1989
The kinetics and mechanism of spillover journal February 1974
Direct evidence of hydrogen spillover from Ni to Cu on Ni–Cu bimetallic catalysts journal March 2014
Hydrogen evolution reaction (h.e.r.) in an acidic or basic medium on nickel electrodeposited with PW12O 40 3- and Cu2+ journal September 1993
A scanning tunneling microscopy study of the reaction between hydrogen and oxygen to form water on Pd(111) journal September 2002
A systematic theoretical study of water dissociation on clean and oxygen-preadsorbed transition metals journal November 2006

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