Photoelektronen-Spektroskopie
Was bietet die Photoelektronenspektroskopie?
Mit Hilfe der Photoelektronenspektroskopie ist es möglich die chemische Zusammensetzung einer Oberfläche zu bestimmen. Sowohl eine Unterscheidung verschiedener Elemente, aber auch die genau Beschreibung des Bindungszustandes eines Elements ist möglich.
Die Methode basiert auf der Detektion von Photoelektronen, die durch elektromagnetische Strahlung aus der zu untersuchenden Oberfläche ausgelöst werden. Üblicherweise unterscheidet man zwischen der Röntgenphotoelektronenspektroskopie (XPS), bei der Röntgenstrahlen mit einer kinetischen Energie im Bereich von etwa 1000 eV auf die Oberfläche geschossen werden, und der Ultraviolettphotoelektronenspektroskopie (UPS), bei der die Energie des verwendeten Lichtes im Bereich von wenigen 10 eV liegt.
Das ICAN nutzt primär die Versaprobe IITM der Firma Ulvac-Phi. Dieses Gerät bietet eine räumliche Auflösung für XPS-Messungen von 10 µm bei einer energetischen Auflösung von 0.5 eV. Die Detektion der durch die Röntgenstrahlung induzierten Sekundärelektronen (SXI) ermöglicht die direkte Abbildung der zu untersuchenden Oberfläche im µm Maßstab.
Abbildung 1: Schematische Darstellung des Anregungsprozess in der Röntgenspektroskopie. Ein Röntgenphoton regt ein Elektron aus einer Schale des Atoms an, hier aus der 1s Schale. Die Energie des Photons wird dabei in kinetische Energie des Elektrons umgewandelt. Ist die Energie des Lichtes bekannt, kann man die Bindungsenergie des Elektrons bestimmen, indem man seine kinetische Energie bestimmt.
Weiterführende Informationen
Photoelektronenspektroskopie in ICAN
Ihr Ansprechpartner für das XPS:
ICAN - Interdisciplinary Center for Analytics on the Nanoscale
47057 Duisburg
Funktionen
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Wissenschaftliche/r Mitarbeiter/in, Center for Nanointegration Duisburg-Essen
Aktuelle Veranstaltungen
Keine aktuellen Veranstaltungen.
Vergangene Veranstaltungen (max. 10)
Die folgenden Publikationen sind in der Online-Universitätsbibliographie der Universität Duisburg-Essen verzeichnet. Weitere Informationen finden Sie gegebenenfalls auch auf den persönlichen Webseiten der Person.
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Core-shell Co₃O₄@CoO Nanoparticles for Enhanced OER ActivityIn: ChemCatChem Jg. 16 (2024) Nr. 6, e202301327Online Volltext: dx.doi.org/ (Open Access)
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Correlating atomic-scale structural and compositional details of Ca-doped LaCO₃ perovskite nanoparticles with activity and stability towards the oxygen evolution reactionIn: Journal of Catalysis Jg. 438 (2024) 115697Online Volltext: dx.doi.org/ (Open Access)
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Polyacrylonitrile-based porous polymer spheres and their conversion to N-doped carbon materials for adsorption and electrocatalysisIn: Journal of Applied Polymer Science Jg. 141 (2024) Nr. 22, e55438Online Volltext: dx.doi.org/ (Open Access)
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Revealing Dynamic Surface and Subsurface Reconstruction of High-Entropy Alloy Electrocatalysts during the Oxygen Evolution Reaction at the Atomic ScaleIn: ACS Catalysis Jg. 14 (2024) S. 12704 - 12716Online Volltext: dx.doi.org/
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Tunable Syngas Formation at Industrially Relevant Current Densities via CO₂ Electroreduction and Hydrogen Evolution over Ni and Fe-derived Catalysts obtained via One-Step Pyrolysis of Polybenzoxazine Based CompositesIn: Small Jg. 20 (2024) Nr. 23, 2305958Online Volltext: dx.doi.org/ (Open Access)
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Versatile synthesis of sub-10 nm sized metal-doped MₓCo₃−ₓO₄ nanoparticles and their electrocatalytic OER activityIn: Materials Advances Jg. 5 (2024) Nr. 8, S. 3482 - 3489Online Volltext: dx.doi.org/ (Open Access)
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Atomic-Scale Insights into Morphological, Structural, and Compositional Evolution of CoOOH during Oxygen Evolution ReactionIn: ACS Catalysis Jg. 13 (2023) Nr. 2, S. 1400 - 1411Online Volltext: dx.doi.org/
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Cobalt nickel boride as electrocatalyst for the oxidation of alcohols in alkaline mediaIn: JPhys Energy Jg. 5 (2023) Nr. 2, 024005Online Volltext: dx.doi.org/ (Open Access)
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Interaction of 2-propanol with predominantly SrO- and TiO2-terminated SrTiO3(100) surfaces studied by vibrational sum frequency spectroscopyIn: Catalysis Science and Technology Jg. 13 (2023) Nr. 17, S. 4988 - 4995Online Volltext: dx.doi.org/ (Open Access)
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Linking Composition, Structure and Thickness of CoOOH layers to Oxygen Evolution Reaction Activity by Correlative MicroscopyIn: Angewandte Chemie International Edition Jg. 62 (2023) Nr. 28, e202305982Online Volltext: dx.doi.org/ (Open Access)
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Microscale Combinatorial Libraries for the Discovery of High-Entropy MaterialsIn: Advanced Materials Jg. 35 (2023) Nr. 9, 2207635Online Volltext: dx.doi.org/ (Open Access)
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N-Doped porous carbons obtained from chitosan and spent coffee as electrocatalysts with tuneable oxygen reduction reaction selectivity for H₂O₂ generationIn: RSC Advances Jg. 13 (2023) Nr. 33, S. 22777 - 22788Online Volltext: dx.doi.org/ (Open Access)
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NiFe₂O₄/biochar decorated porous polymer membranes for the flow-through photo-Fenton degradation of tetracyclineIn: Chemical Engineering Journal Jg. 477 (2023) 147203Online Volltext: dx.doi.org/
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Polymeric multi-composites with a tailored nickel microenvironment as catalytic flow-through membrane reactors for efficient p-nitrophenol degradationIn: Chemical Engineering Journal Jg. 463 (2023) 142437Online Volltext: dx.doi.org/
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Preparation of N-doped carbon materials from cellulose:chitosan blends and their potential application in electrocatalytic oxygen reductionIn: Polymer Bulletin Jg. 80 (2023) Nr. 7, S. 7827 - 7845Online Volltext: dx.doi.org/ (Open Access)
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3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen evolution reactionIn: Nature Communications Jg. 13 (2022) Nr. 1, 179Online Volltext: dx.doi.org/ (Open Access)
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Beneficial Effects of Low Iron Contents on Cobalt‐Containing Spinel Catalysts in the Gas Phase 2‐Propanol OxidationIn: ChemCatChem Jg. 14 (2022) Nr. 18, e202200472Online Volltext: dx.doi.org/ (Open Access)
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Mono-, Di-, and Tri-Valent Cation Doped BiFe₀.₉₅Mn₀.₀₅O₃ Nanoparticles : Ferroelectric PhotocatalystsIn: Advanced Functional Materials Jg. 32 (2022) Nr. 43, 2207105Online Volltext: dx.doi.org/ (Open Access)
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Structure-Performance Relationship of LaFe₁₋ₓCoₓO₃ Electrocatalysts for Oxygen Evolution, Isopropanol Oxidation, and Glycerol OxidationIn: ChemElectroChem Jg. 9 (2022) Nr. 4, e202200092Online Volltext: dx.doi.org/ (Open Access)
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Ultrafast transport-mediated homogenization of photoexcited electrons governs the softening of the A1g phonon in bismuthIn: Physical Review B Jg. 106 (2022) Nr. 1, 014315Online Volltext: dx.doi.org/ (Open Access)
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Direct Detection of Surface Species Formed on Iridium Electrocatalysts during the Oxygen Evolution ReactionIn: Angewandte Chemie International Edition Jg. 60 (2021) Nr. 39, S. 21396 - 21403Online Volltext: dx.doi.org/ (Open Access)
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Large-Area, Two-Dimensional MoS2 Exfoliated on Gold : Direct Experimental Access to the Metal–Semiconductor InterfaceIn: ACS Omega Jg. 6 (2021) Nr. 24, S. 15929 - 15939Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Nanopatterning surfaces by grazing incidence swift heavy ion irradiationIn: Applied Surface Science Jg. 541 (2021) S. 148467Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Segregation-Enhanced Epitaxy of Borophene on Ir(111) by Thermal Decomposition of BorazineIn: ACS Nano Jg. 15 (2021) Nr. 4, S. 7421 - 7429Online Volltext: dx.doi.org/
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Spray-Flame Synthesis of LaMnO₃₊δNanoparticles for Selective CO Oxidation (SELOX)In: Energy & Fuels Jg. 35 (2021) Nr. 5, S. 4367 - 4376Online Volltext: dx.doi.org/
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The Effect of Water on the 2-Propanol Oxidation Activity of Co-Substituted LaFe₁−CoₓO₃ PerovskitesIn: Chemistry - A European Journal Jg. 27 (2021) Nr. 68: Special Issue: Contemporary Challenges in Catalysis, S. 17127 - 17144Online Volltext: dx.doi.org/ (Open Access)
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The Roles of Composition and Mesostructure of Cobalt-Based Spinel Catalysts in Oxygen Evolution ReactionsIn: Chemistry - A European Journal Jg. 27 (2021) Nr. 68, S. 17038 - 17048Online Volltext: dx.doi.org/ (Open Access)
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A swift technique to hydrophobize graphene and increase its mechanical stability and charge carrier densityIn: npj 2D Materials and Applications Jg. 4 (2020) Nr. 1, 11Online Volltext: dx.doi.org/ (Open Access)
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Corrigendum to ‘Strong converse magnetoelectric effect in (Ba,Ca)(Zr,Ti)O₃-NiFe₂O₄ multiferroics: A relationship between phase-connectivity and interface coupling’ (Acta Materialia (2018) 144 (305–313), (S1359645417309072), (10.1016/j.actamat.2017.10.048))In: Acta Materialia Jg. 187 (2020) S. 91 - 92Online Volltext: dx.doi.org/ (Open Access)
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Cover Feature: Spray‐Flame‐Prepared LaCo1–xFexO3 Perovskite Nanoparticles as Active OER Catalysts : Influence of Fe Content and Low‐Temperature Heating (ChemElectroChem 12/2020)In: ChemElectroChem Jg. 7 (2020) Nr. 12, S. 2495 - 2495Online Volltext: dx.doi.org/ (Open Access)
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Effect of Mn and Ba Codoping on a Magnetic Spin Cycloid of Multiferroic Bismuth Ferrite NanoparticlesIn: Journal of Physical Chemistry C: Nanomaterials and Interfaces Jg. 124 (2020) Nr. 40, S. 22266 - 22277Online Volltext: dx.doi.org/
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Effect of the Size and Shape on the Electrocatalytic Activity of Co₃O₄Nanoparticles in the Oxygen Evolution ReactionIn: Inorganic Chemistry Jg. 59 (2020) Nr. 14, S. 10013 - 10024Online Volltext: dx.doi.org/
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One-step synthesis of carbon-supported electrocatalystsIn: Beilstein Journal of Nanotechnology Jg. 11 (2020) S. 1419 - 1431Online Volltext: dx.doi.org/ (Open Access)
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Spray-Flame-Prepared LaCo₁–ₓFeₓO₃ Perovskite Nanoparticles as Active OER Catalysts : Influence of Fe Content and Low-Temperature HeatingIn: ChemElectroChem Jg. 7 (2020) Nr. 12, S. 2564 - 2574Online Volltext: dx.doi.org/ (Open Access)
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The effect of metal-oxide incorporation on the morphology of carbon nanostructuresIn: Journal of Physics D: Applied Physics Jg. 53 (2020) Nr. 14, S. 145206Online Volltext: dx.doi.org/ (Open Access)
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Correction : Determining the role of redox-active materials during laser-induced water decompositionIn: Physical Chemistry, Chemical Physics (PCCP) Jg. 21 (2019) Nr. 43, S. 24239Online Volltext: dx.doi.org/ (Open Access)
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Determining the role of redox-active materials during laser-induced water decompositionIn: Physical Chemistry, Chemical Physics (PCCP) Jg. 21 (2019) Nr. 34, S. 18636 - 18651Online Volltext: dx.doi.org/
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Effects of selenization time and temperature on the growth of Cu₂ZnSnSe₄ thin films on a metal substrate for flexible solar cellsIn: Solar Energy Jg. 178 (2019) S. 142 - 149Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Lead diffusion in CaTiO₃ : A combined study using Rutherford backscattering and TOF-SIMS for depth profiling to reveal the role of lattice strain in diffusion processesIn: American Mineralogist Jg. 104 (2019) Nr. 4, S. 557 - 568Online Volltext: dx.doi.org/
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Nanoscopic Porous Iridium/Iridium Dioxide Superstructures (15 nm) : Synthesis and Thermal Conversion by In Situ Transmission Electron MicroscopyIn: Chemistry - A European Journal Jg. 25 (2019) Nr. 47, S. 11048 - 11057Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Platinum nanoparticles supported on reduced graphene oxide prepared in situ by a continuous one-step laser processIn: Applied Surface Science Jg. 469 (2019) S. 811 - 820Online Volltext: dx.doi.org/
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Process Development for Wet-Chemical Surface Functionalization of Gallium Arsenide Based NanowiresIn: Physica Status Solidi (B): Basic Solid State Physics (2019) S. 1800678Online Volltext: dx.doi.org/
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Solution NMR Spectroscopy with Isotope-Labeled Cysteine (¹³C and ¹⁵N) Reveals the Surface Structure of l -Cysteine-Coated Ultrasmall Gold Nanoparticles (1.8 nm)In: Langmuir Jg. 35 (2019) Nr. 3, S. 767 - 778Online Volltext: dx.doi.org/
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Measuring displacement currents during fabrication of Mg/Si Schottky diodes due to band-bending evolutionIn: Journal of Applied Physics Jg. 124 (2018) Nr. 22, S. 225302Online Volltext: dx.doi.org/
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Strong converse magnetoelectric effect in (Ba,Ca)(Zr,Ti)O3 - NiFe2O4 multiferroics : a relationship between phase-connectivity and interface couplingIn: Acta Materialia Jg. 144 (2018) S. 305 - 313Online Volltext: dx.doi.org/
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UV-light assisted patterned metallization of textile fabricsIn: Applied Surface Science Jg. 436 (2018) S. 1093 - 1103Online Volltext: dx.doi.org/
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Adjusting the catalytic properties of cobalt ferrite nanoparticles by pulsed laser fragmentation in water with defined energy doseIn: Scientific Reports Jg. 7 (2017) Nr. 1, S. 13161Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Gradual modification of ITO particle's crystal structure and optical properties by pulsed UV laser irradiation in a free liquid jetIn: Dalton Transactions Jg. 46 (2017) Nr. 18, S. 6039 - 6048Online Volltext: dx.doi.org/
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Improving the zT value of thermoelectrics by nanostructuring : Tuning the nanoparticle morphology of Sb2Te3 by ionic liquidsIn: Dalton Transactions Jg. 46 (2017) Nr. 3, S. 656 - 668Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Laser-induced surface activation of biocomposites for electroless metallizationIn: Surface and Coatings Technology Jg. 311 (2017) S. 104 - 112Online Volltext: dx.doi.org/
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Microanalysis of single-layer hexagonal boron nitride islands on Ir(111)In: Applied Surface Science Jg. 420 (2017) S. 504 - 510Online Volltext: dx.doi.org/ (Open Access)
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Synthesis of Sb2Se3 and Bi2Se3 Nanoparticles in Ionic Liquids at Low Temperatures and Solid State Structure of [C4C1Im]3[BiCl6]In: Zeitschrift für Anorganische und Allgemeine Chemie (ZAAC) Jg. 643 (2017) Nr. 1, Special Issue: Reactions in Ionic Liquids, S. 60 - 68Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Water-free synthesis of ZnO quantum dots for application as an electron injection layer in light-emitting electrochemical cellsIn: Journal of Materials Chemistry C: Materials for Optical and Electronic Devices Jg. 5 (2017) Nr. 9, S. 2344 - 2351Online Volltext: dx.doi.org/
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In Situ Investigations of Laser-Generated Ligand-Free Platinum Nanoparticles by X-ray Absorption Spectroscopy : How Does the Immediate Environment Influence the Particle Surface?In: Langmuir Jg. 32 (2016) Nr. 35, S. 8793 - 8802Online Volltext: dx.doi.org/
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Molecular design for tailoring a single-source precursor for bismuth ferriteIn: Inorganic Chemistry Jg. 55 (2016) Nr. 15, S. 7542 - 7549Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Resonant laser processing of nanoparticulate Au/TiO2 films on glass supports : Photothermal modification of a photocatalytic nanomaterialIn: Surface Science Jg. 650 (2016) S. 57 - 63Online Volltext: dx.doi.org/
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Synthesis of Bi2Te3 and (BixSb1−x)2Te3 nanoparticles using the novel IL [C4mim]3[Bi3I12]In: Dalton Transactions Jg. 45 (2016) Nr. 39, S. 15326 - 15335Online Volltext: dx.doi.org/ Online Volltext (Open Access)
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Direct self-assembly of Fe2O3/reduced graphene oxide nanocomposite for high-performance lithium-ion batteryIn: Journal of Materials Chemistry A: Materials for Energy and Sustainability Jg. 3 (2015) Nr. 21, S. 11566 - 11574Online Volltext: dx.doi.org/ (Open Access)
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Surface plasmon coupled chemiluminescence during adsorption of oxygen on magnesium surfacesIn: The Journal of Chemical Physics (JCP) Jg. 143 (2015) Nr. 24, S. 244703Online Volltext: dx.doi.org/
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Van der Waals epitaxial MOCVD-growth of (BixSb1-x)2Te3 (0In: Semiconductor Science and Technology Jg. 30 (2015) Nr. 8, S. 085021Online Volltext: dx.doi.org/ Online Volltext (Open Access)In situ non-DLVO stabilization of surfactant-free, plasmonic gold nanoparticles : effect of Hofmeister's anionsIn: Langmuir Jg. 30 (2014) Nr. 15, S. 4213 - 4222Online Volltext: dx.doi.org/Quantum size effects in chemicurrent measurements during low-temperature oxidation of Mg(0001) epilayersIn: New Journal of Physics (NJP) Jg. 16 (2014) S. 113035Online Volltext: dx.doi.org/ (Open Access)Internal detection of surface plasmon coupled chemiluminescence during chlorination of potassium thin filmsIn: The Journal of Chemical Physics (JCP) Jg. 138 (2013) Nr. 3, S. 034710-1 - 034710-6Online Volltext: dx.doi.org/Low temperature diffusion of Li atoms into Si nanoparticles and surfacesIn: Journal of Applied Physics Jg. 114 (2013) Nr. 3, 034310Online Volltext: dx.doi.org/Electronic excitations generated by the deposition of Mg on Mg filmsIn: Physical Review Letters Jg. 104 (2010) Nr. 2, S. 028301Online Volltext: dx.doi.org/Electronic excitations in magnesium epitaxy: Experiment and theoryIn: Physical Review B: Condensed matter and materials physics Jg. 82 (2010) Nr. 15, 155420-1-9Online Volltext: dx.doi.org/
Dissertation
Quantum size effects in Mg epilayers on Si (111) : enhancement of photoelectron yield and oxidation rateDuisburg, Essen (2015) 207 S.Forschungsberichte
Angle Resolved XPS - ARXPSIn: ICAN Notes Jg. 3 (2021)Online Volltext: dx.doi.org/ Online Volltext (Open Access)Focus Track – How to minimize and compensate z-Axis drift using the Renishaw InVia Raman microscopeIn: ICAN Notes Jg. 5 (2021)Online Volltext: dx.doi.org/ Online Volltext (Open Access)Vorträge
Neue Erkenntnisse zur Keimbildung bei GJS
Österreichische Gießereitagung ; Gurten, 27.-28. April 2017,Gurten, Österreich (2017)