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Paul Bagot

Dr Paul Bagot
Academic Visitor

Department of Materials
University of Oxford
16 Parks Road
Oxford OX1 3PH
UK

Tel: +44 1865 273711 (Room 179.20.09)
Tel: +44 1865 273777 (reception)
Fax: +44 1865 273789 (general fax)

Atom Probe Group

Summary of Interests

  • Atomic-scale behaviour of alloy catalyst materials in gaseous environments
  • Catalytic core-shell nanoparticles
  • Materials for nuclear power
  • Instrument development for Atom Probe Tomography

Current Research Projects

Hydrogen Embrittlement in Steels
Dr M.P. Moody, Dr. P.A.J. Bagot
A dedicated environmental cell is being designed and constructed for installation on our Local Electrode Atom Probe instrument. This will enable the study of hydrogen charging in a range of steels, aiming to understand the microstructural changes to bearing steels operating in demanding environments

Atom Probe Studies of Aerospace alloys
Dr P.A.J. Bagot, Prof. M.P. Moody
Atom Probe Tomography and complementary high-resolution characterization methods are being employed to study a range of important aerospace materials (Ni and Ti alloys) in order to develop a better understanding of how they behave in-service. In conjunction with Rolls-Royce plc.

2 public active projects

Research Publications

Engineering Alloys

Kang, J.-H.; Hosseinkhani, B.; Williams, C.A.; Moody, M.P.; Bagot, P.A.J.; Rivera-Diaz-del-Castillo, P.E.J. Solute redistribution in the nanocrystalline structure formed in bearing steels Scripta Materialia, 69, 2013, 630-633

Rugg, D.; Britton, T.B.; Gong, J.; Wilkinson, A.J.; Bagot, P.A.J. In-service materials support for safety critical applications - A case study of a high strength Ti-alloy using advanced experimental and modelling techniques, Materials Science and Engineering A, 599, 2014, 166-173

 

Catalytic Alloys/Nanoparticles

Li, T.; Bagot, P.A.J; Christian, E.; Theobald, B.; Sharman, J.; Ozkaya, D.; Moody, M.P.; Tsang, S.C.E.; Smith, G.D.W. Atomic Imaging of Carbon-supported Pt, Pt/Co and Ir@Pt Nanocatalysts by Atom-Probe Tomography, ACS Catalysis, 4, 2014, 695-702

Li, T.; Bagot, P.A.J.; Marquis, E.A.; Tsang, S.C.E.; Smith, G.D.W. Atomic engineering of platinum alloy surfaces, Ultramicroscopy, 132, 2013, 205-211

Li, T.; Bagot, P.A.J.; Marquis, E.A.; Tsang, S.C.E.; Smith, G.D.W. Characterization of Oxidation and Reduction of Pt-Ru and Pt-Rh-Rh Alloys by Atom Probe Tomography and Comparison with Pt-Rh, Journal of Physical Chemistry C, 116, 2012, 17633-17640

Li, T.; Bagot, P.A.J.; Marquis, E.A.; Tsang, S.C.E.; Smith, G.D.W. Characterization of Oxidation and Reduction in a Platinum-Rhodium alloy by Atom Probe Tomography, Journal of Physical Chemistry C, 116, 2012, 4760-4766

Li, T.; Marquis, E.A.; Bagot, P.A.J.; Tsang, S.C.E.; Smith, G.D.W. Characterization of oxidation and reduction of a platinum-rhodium alloy by atom-probe tomography, Catalysis Today, 175. 2011, 552-557

Bagot, P.A.J.; Kreuzer, H.J.; Cerezo, A.; Smith, G.D.W. A model for oxidation-driven surface segregation and transport on Pt-alloys studied by atom probe tomography, Surface Science, 605, 2011, 1541-1546

Tedsree, K.; Li, T.; Jones, S.; Chan, C.W.A.; Yu, K.M.K.; Bagot, P.A.J.; Marquis, E.A.; Smith, G.D.W.; Tsang, S.C.E. Hydrogen production from formic acid decomposition at room temperature using a Ag-Pd core-shell nanocatalyst, Nature Nanotechnology, 6, 2011, 302-307

Bagot, P.A.J.; Cerezo, A.; Smith, G.D.W. 3D atom probe study of gaseous adsorption on alloy catalyst surfaces III: Ternary Alloys- NO on Pt-Rh-Ru & Pt-Rh-Ir, Surface Science, 602, 2008, 1381-1391

Bagot, P.A.J.; Cerezo, A.; Smith, G.D.W. 3D atom probe study of gas adsorption and reaction on alloy catalyst surfaces II: Results on Pt and Pt-Rh, Surface Science, 601, 2007, 2245-2255

Bagot, P.A.J.; Cerezo, A.; Smith, G.D.W.; de Bocarmé, T.V.; Godfrey, T.J. Automobile exhaust catalysis at the atomic scale: atom-probe investigations on platinum alloys, Surface and Interface Analysis, 39, 2007, 172-177 (49th International Field Emission Symposium, 2004, Graz, Austria)

Bagot, P.A.J.; de Bocarmé, T.V.; Cerezo, A.; Smith, G.D.W. 3D atom probe study of gas adsorption and reaction on alloy catalyst surfaces I: Instrumentation, Surface Science, 600, 2006, 3028-3035

The Effects of Gaseous Adsorption on Pt-alloy Catalyst Surfaces studied with 3D Atom-Probe, University of Oxford, 2005, D.Phil Thesis

Bagot, P.A.J. Fundamental surface science studies of automobile exhaust catalysis, Materials Science and Technology, 20, 2004, 679-694

 

Scattering at Condensed Matter Surfaces

Waring, C.; King, K.L.; Bagot, P.A.J.; Costen, M.L.; McKendrick, K.G. Collision dynamics and reactive uptake of OH radicals at liquid surfaces of atmospheric interest, Physical Chemistry Chemical Physics, 13, 2011, 8457-8469

Waring, C.; Bagot, P.A.J.; Costen, M.L.; McKendrick, K.G. Reactive Scattering as a Chemically Specific Analytical Probe of Liquid Surfaces, Journal of Physical Chemistry Letters, 2, 2011, 12-18

Waring, C.; Bagot, P.A.J.; Bebbington W.M.P.; Räisänen, M.T.; Buck, M.; Costen, M.L.; McKendrick, K.G. How Penetrable Are Thioalkyl Self-Assembled Monolayers?, Journal of Physical Chemistry Letters, 1, 2010, 1917-1921

Waring, C.; Bagot, P.A.J.; Slattery, J.M.; Costen, M.L.; McKendrick, K.G. O(3P) Atoms as a Probe of Surface Ordering in 1-Alkyl-3-methylimidazolium-Based Ionic Liquids, Journal of Physical Chemistry Letters, 1, 2010, 429-433

Waring, C.; Bagot, P.A.J.; Slattery, J.M.; Costen, M.L.; McKendrick, K.G. O(3P) Atoms as a Chemical Probe of Surface Ordering in Ionic Liquids, Journal of Physical Chemistry A, 114, 2010, 4896-4904 (30th International Symposium on Free Radicals, 2009, Savonlinna, Finland)

Waring, C.; Bagot, P.A.J.; Räisänen, M.T.; Costen, M.L.; McKendrick, K.G. Dynamics of the Reaction of O(3P) Atoms with Alkylthiol Self-assembled Monolayers, Journal of Physical Chemistry A, 113, 2009, 4320-4329

Bagot, P.A.J.; Waring, C.; Costen, M.L.; McKendrick, K.G. Dynamics of inelastic scattering of OH radicals from reactive and inert liquid surfaces, Journal of Physical Chemistry C, 112, 2008, 10868-10877

Allan, M.; Bagot, P.A.J.; Westacott, R.E.; Costen, M.L.; McKendrick, K.G. Influence of molecular and supramolecular structure on the gas-liquid interfacial reactivity of hydrocarbon liquids with O(3P) atoms, Journal of Physical Chemistry C, 112, 2008, 1524-1532

Allan, M.; Bagot, P.A.J.; Costen, M.L.; McKendrick, K.G. Temperature dependence of OH yield, translational energy, and vibrational branching in the reaction of O(3P)(g) with liquid squalane, Journal of Physical Chemistry C, 111, 2007, 14833-14842

Allan, M.; Bagot, P.A.J.; Köhler, S.P.K.; Costen, M.L.; McKendrick, K.G. Dynamics of interfacial reactions between O(3P) atoms and long-chain liquid hydrocarbons, Physica Scripta, 76, 2007, C42-C47 (16th Biennial European Conference on Dynamics of Molecular Collisions, 2006, Levico, Italy)