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Title: CO Oxidation Catalyzed by Au Dispersed on SBA-15 Modified with TiO2 Films Grown via Atomic Layer Deposition (ALD)

Journal Article · · Catalysts

It has been established that gold, when in nanoparticle (NP) form and in contact with reducible oxides, can promote oxidation reactions under mild conditions. Here, we report results from our exploration of the catalytic oxidation of carbon monoxide using catalysts where Au NPs were combined with thin titanium oxide films deposited on SBA-15 using atomic layer deposition (ALD). Both orders of deposition, with TiO2 added either before or after Au dispersion, were tested for two titania film thicknesses amounting to about half and full TiO2 monolayers. The resulting catalysts were characterized using various techniques, mainly electron microscopy and N2 adsorption–desorption isotherms, and the kinetics of the oxidation of CO with O2 were followed using infrared absorption spectroscopy. A synergy between the Au and TiO2 phases as it relates to the bonding and conversion of CO was identified, the tuning of which could be controlled by varying the synthetic parameters. The ALD of TiO2 films proved to be an effective way to maximize the Au-TiO2 interface sites, and with that help with the activation of molecular oxygen.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0023119
OSTI ID:
1989969
Journal Information:
Catalysts, Journal Name: Catalysts Vol. 13 Journal Issue: 7; ISSN 2073-4344
Publisher:
MDPI AGCopyright Statement
Country of Publication:
Switzerland
Language:
English

References (42)

Heterogeneous partial oxidation catalysis on metal oxides journal October 2016
Controlling Selectivity in Unsaturated Aldehyde Hydrogenation Using Single-Site Alloy Catalysts journal September 2019
Catalytic oxidation of carbon monoxide at cryogenic temperatures journal November 2014
Preparation of Highly Active Silica-Supported Au Catalysts for CO Oxidation by a Solution-Based Technique journal June 2006
Sub-Monolayer Control of Mixed-Oxide Support Composition in Catalysts via Atomic Layer Deposition: Selective Hydrogenation of Cinnamaldehyde Promoted by (SiO 2 -ALD)-Pt/Al 2 O 3 journal August 2018
Catalytic selective oxidation: The forefront in the challenge for a more sustainable chemical industry journal November 2010
Sub-monolayer control of the growth of oxide films on mesoporous materials journal January 2018
Au@Void@TiO2 yolk–shell nanostructures as catalysts for the promotion of oxidation reactions at cryogenic temperatures journal June 2016
CO Oxidation on Gold-Supported Iron Oxides: New Insights into Strong Oxide–Metal Interactions journal July 2015
Growth of ZrO2 films on mesoporous silica sieve via atomic layer deposition journal March 2023
Catalyst Design with Atomic Layer Deposition journal February 2015
Aerobic oxidative esterification of primary alcohols over Pd-Au bimetallic catalysts supported on mesoporous silica nanoparticles journal May 2018
Molecular approaches to heterogeneous catalysis journal December 2021
Atomic Layer Deposition (ALD) as a Way to Prepare New Mixed-Oxide Catalyst Supports: The Case of Alumina Addition to Silica-Supported Platinum for the Selective Hydrogenation of Cinnamaldehyde journal March 2019
Recent advances in heterogeneous selective oxidation catalysis for sustainable chemistry journal January 2014
New advances in the use of infrared absorption spectroscopy for the characterization of heterogeneous catalytic reactions journal January 2014
Industrial Catalysis book January 2015
Effect of metal nanoparticle size and titania crystallinity on the performance of Au/TiO 2 catalysts for the promotion of carbon monoxide oxidation at cryogenic temperatures journal August 2019
Catalytically active gold on ordered titania supports journal January 2008
Heterogeneous Gold-Based Catalysis for Green Chemistry:  Low-Temperature CO Oxidation and Propene Oxidation journal June 2007
Nanoengineering Heterogeneous Catalysts by Atomic Layer Deposition journal June 2017
Redox Properties of TiO2 Thin Films Grown on Mesoporous Silica by Atomic Layer Deposition journal May 2023
A golden age of catalysis: A perspective journal September 2005
A Yolk@Shell Nanoarchitecture for Au/TiO2 Catalysts journal April 2011
Atomic Layer Deposition on Porous Materials: Problems with Conventional Approaches to Catalyst and Fuel Cell Electrode Preparation journal March 2018
Catalysis by gold: New insights into the support effect journal August 2013
Surface chemistry of Au/TiO2: Thermally and photolytically activated reactions journal March 2016
Enhancing the activity of gold supported catalysts by oxide coating: towards efficient oxidations journal January 2021
Adsorption of Gases in Multimolecular Layers journal February 1938
Designing Sites in Heterogeneous Catalysis: Are We Reaching Selectivities Competitive With Those of Homogeneous Catalysts? journal March 2022
Importance of Size and Contact Structure of Gold Nanoparticles for the Genesis of Unique Catalytic Processes journal December 2019
CO oxidation over supported gold nanoparticles as revealed by operando grazing incidence X-ray scattering analysis journal January 2018
Gold-catalysed oxidation of carbon monoxide journal June 2000
Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984) journal January 1985
Infrared Absorption Spectroscopy of Adsorbed CO: New Applications in Nanocatalysis for an Old Approach journal July 2012
Nucleation and Initial Stages of Growth during the Atomic Layer Deposition of Titanium Oxide on Mesoporous Silica journal August 2020
CO Oxidation over Supported Gold Catalysts—“Inert” and “Active” Support Materials and Their Role for the Oxygen Supply during Reaction journal January 2001
Gold-Titania Catalysts for Low-Temperature Oxidation and Water Splitting journal October 2017
Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO Oxidation journal September 2008
The Determination of Pore Volume and Area Distributions in Porous Substances. I. Computations from Nitrogen Isotherms journal January 1951
Spectroscopic Observation of Dual Catalytic Sites During Oxidation of CO on a Au/TiO2 Catalyst journal August 2011
Use of Au@Void@TiO 2 yolk-shell nanostructures to probe the influence of oxide crystallinity on catalytic activity for low-temperature oxidations journal December 2019

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