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Title: Binding and stability of MgO monomers on anatase TiO2(101)

Journal Article · · Journal of Chemical Physics
DOI: https://doi.org/10.1063/5.0047521 · OSTI ID:1798961

In catalysis, MgO is often used to modify the acid-base properties of support oxides and to stabilize supported metal atoms and particles on oxides. In this study, we show how the sublimation of MgO powder can be used to deposit MgO monomers, hither on anatase TiO2(101). A combination of X-ray electron spectroscopy, high-resolution scanning tunneling microscopy, and density functional theory is employed to gain insight into the MgO monomer binding, electronic and vibrational properties, and thermal stability. In the most stable configuration, the Mg and O of the MgO monomer bind to two surface oxygens and one undercoordinated surface titanium, respectively. The additional binding weakens the Mg-O monomer bond and makes the Mg more ionic. The monomers are thermally stable up to 650 K, where the onset of diffusion into the TiO2 bulk is observed. Finally, the monomeric MgO species on TiO2(101) represent an ideal, atomically precise system with modified acid-base properties and will be employed in our future catalytic studies.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1798961
Report Number(s):
PNNL-SA-160001
Journal Information:
Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 20 Vol. 154; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (109)

The role of databases in support of computational chemistry calculations journal October 1996
Formation of Monodisperse (WO3)3 Clusters on TiO2(110) journal July 2006
An Atomic-Scale View of CO and H 2 Oxidation on a Pt/Fe 3 O 4 Model Catalyst journal September 2015
Semiempirical GGA-type density functional constructed with a long-range dispersion correction journal January 2006
cp2k: atomistic simulations of condensed matter systems
  • Hutter, Jürg; Iannuzzi, Marcella; Schiffmann, Florian
  • Wiley Interdisciplinary Reviews: Computational Molecular Science, Vol. 4, Issue 1 https://doi.org/10.1002/wcms.1159
journal June 2013
Gaussian basis sets for use in correlated molecular calculations. VII. Valence, core-valence, and scalar relativistic basis sets for Li, Be, Na, and Mg journal May 2010
Perturbative corrections to account for triple excitations in closed and open shell coupled cluster theories journal September 1994
Characterization of oxide layers on Mg(0001) and comparison of H2O adsorption on surface and bulk oxides journal July 1990
TiO2-MgO mixed oxide nanomaterials for solar energy conversion journal February 2018
Impact of surface hydroxylation in MgO-/SnO-nanocluster modified TiO2 anatase (101) composites on visible light absorption, charge separation and reducibility journal June 2018
Critic2: A program for real-space analysis of quantum chemical interactions in solids journal March 2014
The role of H2 on the stability of the single-metal-site Ir1/AC catalyst for heterogeneous methanol carbonylation journal January 2020
Modified TiO 2 photocatalyst for CO 2 photocatalytic reduction: An overview journal December 2017
Enhancing TiO2 activity for CO2 photoreduction through MgO decoration journal January 2020
Magnesium oxide as an efficient catalyst for CO 2 fixation and N-formylation reactions under ambient conditions journal May 2018
Dispersion corrected DFT calculations for the adsorption of N2O on MgO journal September 2014
A fifth-order perturbation comparison of electron correlation theories journal May 1989
Oxidation and growth of Mg thin films on Ru(001) journal August 1999
The surface science of titanium dioxide journal January 2003
Single-Atom Alloy Catalysis journal June 2020
Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles journal April 2018
Benchmark Calculations of Energetic Properties of Groups 4 and 6 Transition Metal Oxide Nanoclusters Including Comparison to Density Functional Theory journal July 2016
Thermodynamics of Metal Carbonates and Bicarbonates and Their Hydrates for Mg, Ca, Fe, and Cd Relevant to Mineral Energetics journal January 2020
Growth and Stability of Titanium Dioxide Nanoclusters on Graphene/Ru(0001) journal August 2017
Substitution of Titanium for Magnesium Ions at the Surface of Mg-Doped Rutile journal May 2020
Preparation and Characterization of V 2 O 5 /a-TiO 2 (101) Model Catalysts journal November 2020
Electronic Interactions of Size-Selected Oxide Clusters on Metallic and Thin Film Oxide Supports journal September 2017
Formation of Metastable Water Chains on Anatase TiO 2 (101) journal September 2017
Understanding the Binding of Aromatic Hydrocarbons on Rutile TiO 2 (110) journal June 2019
Surface Modification of Rutile TiO 2 with Alkaline-Earth Oxide Nanoclusters for Enhanced Oxygen Evolution journal May 2020
Catalysis Applications of Size-Selected Cluster Deposition journal November 2015
Understanding Heterolytic H 2 Cleavage and Water-Assisted Hydrogen Spillover on Fe 3 O 4 (001)-Supported Single Palladium Atoms journal July 2019
Low-Temperature Oxidation of Methanol to Formaldehyde on a Model Single-Atom Catalyst: Pd Atoms on Fe 3 O 4 (001) journal October 2019
First-Principles Prediction of New Photocatalyst Materials with Visible-Light Absorption and Improved Charge Separation: Surface Modification of Rutile TiO 2 with Nanoclusters of MgO and Ga 2 O 3 journal October 2012
Basis Set Exchange:  A Community Database for Computational Sciences journal March 2007
Structure and Composition of the Nanocrystalline Phases in a MgO−TiO 2 System Prepared via Sol−Gel Technique journal October 1999
Nanostructured Oxides in Chemistry:  Characterization and Properties journal September 2004
Infrared Characterization of Hydroxyl Groups on MgO:  A Periodic and Cluster Density Functional Theory Study journal April 2007
Radical versus Nucleophilic Mechanism of Formaldehyde Polymerization Catalyzed by (WO 3 ) 3 Clusters on Reduced or Stoichiometric TiO 2 (110) journal August 2012
Catalytic Dehydration of 2-Propanol on (WO 3 ) 3 Clusters on TiO 2 (110) journal April 2008
Catalytic Oxidation of Carbon Monoxide on Monodispersed Platinum Clusters:  Each Atom Counts journal April 1999
Formaldehyde Polymerization on (WO 3 ) 3 /TiO 2 (110) Model Catalyst journal May 2010
Structures and Heats of Formation of Simple Alkaline Earth Metal Compounds: Fluorides, Chlorides, Oxides, and Hydroxides for Be, Mg, and Ca journal September 2010
Structures and Stabilities of (MgO) n Nanoclusters journal April 2014
Ethanol Conversion on Cyclic (MO 3 ) 3 (M = Mo, W) Clusters journal February 2014
Surface Dipoles and Electron Transfer at the Metal Oxide–Metal Interface: A 2PPE Study of Size-Selected Metal Oxide Clusters Supported on Cu(111) journal June 2014
Catalytic Dehydration of 2-Propanol by Size-Selected (WO 3 ) n and (MoO 3 ) n Metal Oxide Clusters journal July 2014
Oxidation, Reduction, and Condensation of Alcohols over (MO 3 ) 3 (M = Mo, W) Nanoclusters journal September 2014
Accurate Thermochemistry for Transition Metal Oxide Clusters journal July 2009
Competitive Oxidation and Reduction of Aliphatic Alcohols over (WO 3 ) 3 Clusters journal May 2009
Adsorption of Late Transition Metal Atoms on MgO/Mo(100) and MgO/Ag(100) Ultrathin Films: A Comparative DFT Study journal September 2009
Subnanometer cobalt oxide clusters as selective low temperature oxidative dehydrogenation catalysts journal February 2019
Controlling the charge state of supported nanoparticles in catalysis: lessons from model systems journal January 2018
Adsorbate-induced structural evolution changes the mechanism of CO oxidation on a Rh/Fe 3 O 4 (001) model catalyst journal January 2020
Oxygen-induced restructuring of rutile TiO2(110): formation mechanism, atomic models, and influence on surface chemistry journal January 1999
Fundamental aspects of catalysis on supported metal clusters journal January 2004
Charge transfers at metal/oxide interfaces: a DFT study of formation of K δ+ and Au δ− species on MgO/Ag(100) ultra-thin films from deposition of neutral atoms journal January 2006
Dehydration, dehydrogenation, and condensation of alcohols on supported oxide catalysts based on cyclic (WO 3 ) 3 and (MoO 3 ) 3 clusters journal January 2014
CO 2 photoreduction with H 2 O vapor by porous MgO–TiO 2 microspheres: effects of surface MgO dispersion and CO 2 adsorption–desorption dynamics journal January 2014
Surface core-level binding energy shifts for MgO(100) journal January 2014
Surface organometallic chemistry in heterogeneous catalysis journal January 2018
Alkaline earth metal oxide nanocluster modification of rutile TiO 2 (110) promotes water activation and CO 2 chemisorption journal January 2018
Comparative assessment of a new nonempirical density functional: Molecules and hydrogen-bonded complexes journal December 2003
Transpiration Study of Magnesium Oxide journal December 1963
A Thermodynamic and Spectroscopic Study of Gaseous Magnesium Oxide journal November 1954
Gaussian basis sets for accurate calculations on molecular systems in gas and condensed phases journal September 2007
A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu journal April 2010
A full coupled‐cluster singles and doubles model: The inclusion of disconnected triples journal February 1982
A unified formulation of the constant temperature molecular dynamics methods journal July 1984
Electron affinities of the first‐row atoms revisited. Systematic basis sets and wave functions journal May 1992
Coupled‐cluster methods with noniterative triple excitations for restricted open‐shell Hartree–Fock and other general single determinant reference functions. Energies and analytical gradients journal June 1993
Density‐functional thermochemistry. III. The role of exact exchange journal April 1993
Coupled cluster theory for high spin, open shell reference wave functions journal October 1993
Density-functional thermochemistry. V. Systematic optimization of exchange-correlation functionals journal November 1997
Generalized gradient approximation to the angle- and system-averaged exchange hole journal September 1998
Toward reliable density functional methods without adjustable parameters: The PBE0 model journal April 1999
Erratum: “Coupled cluster theory for high spin, open shell reference wave functions” [ J. Chem. Phys. 99 , 5219 (1993)] journal February 2000
Chemistry of NO2 on CeO2 and MgO: Experimental and theoretical studies on the formation of NO3 journal June 2000
Gaussian basis sets for use in correlated molecular calculations. XI. Pseudopotential-based and all-electron relativistic basis sets for alkali metal (K–Fr) and alkaline earth (Ca–Ra) elements journal December 2017
Perspective: Size selected clusters for catalysis and electrochemistry journal March 2018
Morphology and reactivity of size-selected titanium oxide nanoclusters on Au(111) journal February 2020
Probing structural changes upon carbon monoxide coordination to single metal adatoms journal February 2020
The Molpro quantum chemistry package journal April 2020
Dual role of CO in the stability of subnano Pt clusters at the Fe 3 O 4 (001) surface journal July 2016
Creating self-assembled arrays of mono-oxo (MoO 3 ) 1 species on TiO 2 (101) via deposition and decomposition of (MoO 3 ) n oligomers journal January 2021
Size-Selected Clusters on Solid Surfaces journal October 2001
The atomic simulation environment—a Python library for working with atoms journal June 2017
A family of variable-metric methods derived by variational means journal January 1970
Conditioning of quasi-Newton methods for function minimization journal September 1970
A new approach to variable metric algorithms journal March 1970
The Convergence of a Class of Double-rank Minimization Algorithms 1. General Considerations journal January 1970
Tuning the surface metal work function by deposition of ultrathin oxide films: Density functional calculations journal January 2006
Canonical dynamics: Equilibrium phase-space distributions journal March 1985
Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density journal January 1988
Accurate and simple analytic representation of the electron-gas correlation energy journal June 1992
Separable dual-space Gaussian pseudopotentials journal July 1996
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
Bonding of Pd, Ag, and Au atoms on MgO(100) surfaces and Mg O ∕ Mo ( 100 ) ultra-thin films: A comparative DFT study journal September 2005
Restoring the Density-Gradient Expansion for Exchange in Solids and Surfaces journal April 2008
Evidence for the Predominance of Subsurface Defects on Reduced Anatase TiO 2 ( 101 ) journal March 2009
Generalized Gradient Approximation Made Simple journal October 1996
Generalized Gradient Approximation Made Simple [Phys. Rev. Lett. 77, 3865 (1996)] journal February 1997
Coupled-cluster theory in quantum chemistry journal February 2007
An object-oriented scripting interface to a legacy electronic structure code journal January 2002
Optimization of Gaussian-type basis sets for local spin density functional calculations. Part I. Boron through neon, optimization technique and validation journal February 1992
S Adsorption at Regular and Defect Sites of the MgO (001) Surface: Cluster Model Study at DFT Level journal August 2003
First Principles Modelling of Surface Modified TiO2 for Water Activation and Oxygen Evolution journal May 2020
Thermal Phase Stability and Catalytic Properties of Nanostructured TiO 2 -MgO Sol–Gel Mixed Oxides journal December 2008
MgO–TiO 2 mixed oxide nanoparticles: Comparison of flame synthesis versus aerogel method; characterization, and photocatalytic activities journal September 2012