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Effect of TiOx Substrate Interactions on the Electrocatalytic Oxygen Reduction Reaction at Au Nanoparticles

Journal Article · · Journal of Physical Chemistry. C
Here, we report a robust model for studying electrocatalytic reactions at metal nanoparticles (NPs) in contact with metal oxide surfaces. The metal oxide layer (TiOx) is prepared by atomic layer deposition, and it is sufficiently thin that it does not hinder electron transfer from the underlying conductive electrode to the supported AuNP electrocatalysts. In advance of the experiments, density functional theory (DFT) predicted that direct contact between AuNPs and TiOx would lead to enhanced activity for the oxygen reduction reaction (ORR). DFT attributes the observed ORR enhancement to partial charge transfer from oxygen vacancies within the TiOx film to the supported AuNPs and hence formation of anionic Au species. The experimental findings are in near quantitative agreement with the DFT results. Specifically, compared to isolated AuNPs, decreases of ~ 100 and ~ 50 mV in the ORR onset potential are observed experimentally for AuNPs supported on TiO1.9 and TiO2.0 films, respectively.
Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
Robert A. Welch Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
SC0010576
OSTI ID:
1618844
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Journal Issue: 18 Vol. 124; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (55)

Materials Pushing the Application Limits of Wire Grid Polarizers further into the Deep Ultraviolet Spectral Range journal July 2016
Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces journal March 2011
Improved grid-based algorithm for Bader charge allocation journal January 2007
Interaction of Au with titania: the role of reduced Ti journal June 2007
Hydrogen evolution reaction on anodic titanium oxide films journal September 1987
Channel and tubular electrodes journal June 1986
Hydrodynamic voltammetry at channel electrodes journal June 1977
XPS characterization of Au/TiO2 catalysts: Binding energy assessment and irradiation effects journal January 2011
Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Sc, Ti, V, Cu and Zn journal November 2010
A fast and robust algorithm for Bader decomposition of charge density journal June 2006
Ti 2p and O 1s core levels and chemical bonding in titanium-bearing oxides journal June 2006
Investigation of the electronic interaction between TiO2(110) surfaces and Au clusters by PES and STM journal September 2004
Synthesis and catalytic properties of metal nanoparticles: Size, shape, support, composition, and oxidation state effects journal April 2010
On the initial growth of atomic layer deposited TiO2 films on silicon and copper surfaces journal September 2012
Electroanalytical Performance of Carbon Films with Near-Atomic Flatness journal March 2001
Microelectrochemical Flow Cell for Studying Electrocatalytic Reactions on Oxide-Coated Electrodes journal October 2017
Mechanism of Oxygen Reduction Reaction on Pt(111) in Alkaline Solution: Importance of Chemisorbed Water on Surface journal July 2016
Electrocatalytic Reduction of Oxygen on Platinum Nanoparticles in the Presence and Absence of Interactions with the Electrode Surface journal September 2016
Calculations of CO Oxidation over a Au/TiO 2 Catalyst: A Study of Active Sites, Catalyst Deactivation, and Moisture Effects journal January 2018
Dendrimers as Encapsulating, Stabilizing, or Directing Agents for Inorganic Nanoparticles journal September 2011
Band Bending in Semiconductors: Chemical and Physical Consequences at Surfaces and Interfaces journal June 2012
CO Oxidation at the Au/TiO 2 Boundary: The Role of the Au/Ti 5c Site journal February 2015
Properties of platinum supported on oxides of titanium journal September 1982
On the Origin of the Efficient Nanoparticle Mediated Electron Transfer across a Self-Assembled Monolayer journal February 2011
Tunneling Dendrimers. Enhancing Charge Transport through Insulating Layer Using Redox Molecular Objects journal December 2014
Preparation of Cu Nanoclusters within Dendrimer Templates journal May 1998
Electrochemistry at a Metal Nanoparticle on a Tunneling Film: A Steady-State Model of Current Densities at a Tunneling Ultramicroelectrode journal August 2015
Electron Transfer Facilitated by Dendrimer-Encapsulated Pt Nanoparticles Across Ultrathin, Insulating Oxide Films journal May 2016
Electrocatalytic Study of the Oxygen Reduction Reaction at Gold Nanoparticles in the Absence and Presence of Interactions with SnO x Supports journal September 2018
Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode journal November 2004
Enhancement in Ethanol Electrooxidation by SnO x Nanoislands Grown on Pt(111): Effect of Metal Oxide–Metal Interface Sites journal August 2011
Metal–Support Interactions between Nanosized Pt and Metal Oxides (WO 3 and TiO 2 ) Studied Using X-ray Photoelectron Spectroscopy journal September 2011
Atomic Layer Deposition, Characterization, and Growth Mechanistic Studies of TiO 2 Thin Films journal June 2014
Electrochemical Properties of Metal-Oxide-Coated Carbon Electrodes Prepared by Atomic Layer Deposition journal November 2014
Dendrimer Templates for the Formation of Gold Nanoclusters journal August 2000
Ternary Pt/Rh/SnO2 electrocatalysts for oxidizing ethanol to CO2 journal January 2009
Niobium oxide-supported platinum ultra-low amount electrocatalysts for oxygen reduction journal January 2008
Steady state oxygenreduction and cyclic voltammetry journal January 2009
Oxygen vacancy and hole conduction in amorphous TiO 2 journal January 2015
A combined theoretical and experimental EXAFS study of the structure and dynamics of Au 147 nanoparticles journal January 2016
Oxygen vacancies on TiO 2 promoted the activity and stability of supported Pd nanoparticles for the oxygen reduction reaction journal January 2018
Surface Pourbaix diagrams and oxygen reduction activity of Pt, Ag and Ni(111) surfaces studied by DFT journal January 2008
How copper catalyzes the electroreduction of carbon dioxide into hydrocarbon fuels journal January 2010
Electrochemical charge transfer mediated by metal nanoparticles and quantum dots journal January 2011
Dendrimer-encapsulated nanoparticles: New synthetic and characterization methods and catalytic applications journal January 2011
Generator-collector double electrode systems: A review journal January 2012
Understanding the electrocatalysis of oxygen reduction on platinum and its alloys journal January 2012
Accurate and efficient algorithm for Bader charge integration journal February 2011
A grid-based Bader analysis algorithm without lattice bias journal January 2009
Titanium dioxide thin films by atomic layer deposition: a review journal August 2017
Accurate and simple analytic representation of the electron-gas correlation energy journal June 1992
Ultraviolet-Ozone Oxidation of Metal Films journal January 2003
Imaging of Defects Contained within n‐Alkylthiol Monolayers by Combination of Underpotential Deposition and Scanning Tunneling Microscopy: Kinetics of Self‐Assembly journal August 1991
Structure and optical properties of TiO2 thin films deposited by ALD method journal December 2017
Nanoparticle Mediated Electron Transfer Across Organic Layers: From Current Understanding to Applications journal January 2013

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