PES: Chemische Analyse

© ICAN 2019 | Abbildung 1

Chemische Analyse

Die kinetische Energie der Elektronen, die durch Röntgenstrahlung aus der Oberfläche herausgelöst werden, hängt von dem Element ab, aus dem sie stammen, aber auch von dem genauen Bindungszustandes des jeweiligen Atoms. Zum Beispiel haben Elektronen aus dem Kohlenstoff 1s Zustand eine um bis zu ~3 eV kleiner kinetische Energie, wenn das Atom eine Doppelbindung mit Sauerstoff eingegangen ist, anstatt eine Kohlenstoff-Kohlenstoffbindung.

In dem Beispiel in Abbildung 2, ist das Elektronensignal aus dem Au 4f Orbital einer dünnen Schicht von Gold Nanopartikeln zu sehen. Eine genau Analyse ergibt, dass neben dem Beitrag von elementaren Gold (blau Linie) auch Beiträge von oxidierten Goldspezies (Au1+ und Au3+, orange- und cyanfarbene Linien) existieren. Etwa 6% der Goldatome der Nanopartikel sind oxidiert. Dies ist hier nahe an der Nachweisgrenze.

 

Abbildung 1: Intensität des XPS Au 4f Signals für eine dünne Gold-Nanopartikelschicht. Kleine Mengen des Goldes sind oxidiert, weshalb im Signal des Au 4f peaks zwei kleine Nebenmaxima auftauchen (orange- und cyanfarbene Linien für die Au1+ und Au3+ Spezies). Hier sind etwa 6% der Goldatome oxidiert.

Ihr Ansprechpartner für das XPS:

Dr. Ulrich Hagemann

ICAN - Interdisciplinary Center for Analytics on the Nanoscale

Anschrift
NETZ | Raum U1.15 | Carl-Benz-Str. 199
47057 Duisburg
Raum
LN U1.15
Telefon
+49 203 379 8035
Telefax
+49 203 379 8046
E-Mail
ulrich.hagemann@uni-due.de
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http://www.uni-due.de/ican

Funktionen

  • Wissenschaftliche/r Mitarbeiter/in, Center for Nanointegration Duisburg-Essen

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.

    Artikel in Zeitschriften

  • Saddeler, Sascha; Hagemann, Ulrich; Bendt, Georg; Schulz, Stephan
    Core-shell Co₃O₄@CoO Nanoparticles for Enhanced OER Activity
    In: ChemCatChem Jg. 16 (2024) Nr. 6, e202301327
    Online Volltext: dx.doi.org/ (Open Access)
  • Bai, Fan; Schulwitz, Jonas; Priamushko, Tatiana; Hagemann, Ulrich; Kostka, Aleksander; Heidelmann, Markus; Cherevko, Serhiy; Muhler, Martin; Li, Tong
    Correlating atomic-scale structural and compositional details of Ca-doped LaCO₃ perovskite nanoparticles with activity and stability towards the oxygen evolution reaction
    In: Journal of Catalysis Jg. 438 (2024) 115697
    Online Volltext: dx.doi.org/ (Open Access)
  • He, Biao; Hosseini, Pouya; Escalera-López, Daniel; Schulwitz, Jonas; Rüdiger, Olaf; Hagemann, Ulrich; Heidelmann, Markus; DeBeer, Serena; Muhler, Martin; Cherevko, Serhiy; Tschulik, Kristina; Li, Tong
    Effects of Dynamic Surface Transformation on the Activity and Stability of Mixed Co-Mn Cubic Spinel Oxides in the Oxygen Evolution Reaction in Alkaline Media
    In: Advanced Energy Materials (2024) in press
    Online Volltext: dx.doi.org/ (Open Access)
  • Khairani, Inna Yusnila; Jin, Benjin; Palardonio, Sidney M.; Hagemann, Ulrich; Alonso, Beatriz; Ortega, Amaya; Doñate-Buendía, Carlos; Martorell, Jordi; Ros, Carles; Kallio, Tanja; Gökce, Bilal
    FeNi nanoparticle-modified reduced graphene oxide as a durable electrocatalyst for oxygen evolution
    In: Journal of Catalysis Jg. 439 (2024) 115771
    Online Volltext: dx.doi.org/ (Open Access)
  • Gao, Zhuo; Sanjuán, Ignacio; Hagemann, Ulrich; Wittmar, Alexandra S. M.; Andronescu, Corina; Ulbricht, Mathias
    Polyacrylonitrile-based porous polymer spheres and their conversion to N-doped carbon materials for adsorption and electrocatalysis
    In: Journal of Applied Polymer Science Jg. 141 (2024) Nr. 22, e55438
    Online Volltext: dx.doi.org/ (Open Access)
  • Luan, Chenglong; Escalera-López, Daniel; Hagemann, Ulrich; Kostka, Aleksander; Laplanche, Guillaume; Wu, Dongshuang; Cherevko, Serhiy; Li, Tong
    Revealing Dynamic Surface and Subsurface Reconstruction of High-Entropy Alloy Electrocatalysts during the Oxygen Evolution Reaction at the Atomic Scale
    In: ACS Catalysis Jg. 14 (2024) Nr. 17, S. 12704 - 12716
    Online Volltext: dx.doi.org/
  • Sanjuán, Ignacio; Kumbhar, Vaibhav; Chanda, Vimanshu; Machado, Raíssa R. L.; Jaato, Bright N.; Braun, Michael; Mahbub, Muhammad A. A.; Bendt, Georg; Hagemann, Ulrich; Heidelmann, Markus; Schuhmann, Wolfgang; Andronescu, Corina
    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 Composites
    In: Small Jg. 20 (2024) Nr. 23, 2305958
    Online Volltext: dx.doi.org/ (Open Access)
  • Placke-Yan, Carsten; Bendt, Georg; Salamon, Soma; Landers, Joachim; Wende, Heiko; Hagemann, Ulrich; Schulz, Stephan
    Versatile synthesis of sub-10 nm sized metal-doped MₓCo₃−ₓO₄ nanoparticles and their electrocatalytic OER activity
    In: Materials Advances Jg. 5 (2024) Nr. 8, S. 3482 - 3489
    Online Volltext: dx.doi.org/ (Open Access)
  • Luan, Chenglong; Corva, Manuel; Hagemann, Ulrich; Wang, Hongcai; Heidelmann, Markus; Tschulik, Kristina; Li, Tong
    Atomic-Scale Insights into Morphological, Structural, and Compositional Evolution of CoOOH during Oxygen Evolution Reaction
    In: ACS Catalysis Jg. 13 (2023) Nr. 2, S. 1400 - 1411
    Online Volltext: dx.doi.org/
  • Braun, Michael; Chatwani, Mohit; Kumar, Piyush; Hao, Yun; Sanjuán, Ignacio; Apostoleri, Ariadni-Aikaterini; Brix, Ann Cathrin; Morales, Dulce M.; Hagemann, Ulrich; Heidelmann, Markus; Masa, Justus; Schuhmann, Wolfgang; Andronescu, Corina
    Cobalt nickel boride as electrocatalyst for the oxidation of alcohols in alkaline media
    In: JPhys Energy Jg. 5 (2023) Nr. 2, 024005
    Online Volltext: dx.doi.org/ (Open Access)
  • Bera, Anupam; Bullert, Denise; Linke, Matthias; Franzka, Steffen; Hagemann, Ulrich; Hartmann, Nils; Hasselbrink, Eckart
    Interaction of 2-propanol with predominantly SrO- and TiO2-terminated SrTiO3(100) surfaces studied by vibrational sum frequency spectroscopy
    In: Catalysis Science and Technology Jg. 13 (2023) Nr. 17, S. 4988 - 4995
    Online Volltext: dx.doi.org/ (Open Access)
  • Luan, Chenglong; Angona, Johanna; Bala Krishnan, Arjun; Corva, Manuel; Hosseini, Pouya; Heidelmann, Markus; Hagemann, Ulrich; Batsa Tetteh, Emmanuel; Schuhmann, Wolfgang; Tschulik, Kristina; Li, Tong
    Linking Composition, Structure and Thickness of CoOOH layers to Oxygen Evolution Reaction Activity by Correlative Microscopy
    In: Angewandte Chemie International Edition Jg. 62 (2023) Nr. 28, e202305982
    Online Volltext: dx.doi.org/ (Open Access)
  • Banko, Lars; Tetteh, Emmanuel Batsa; Kostka, Aleksander; Piotrowiak, Tobias Horst; Krysiak, Olga Anna; Hagemann, Ulrich; Andronescu, Corina; Schuhmann, Wolfgang; Ludwig, Alfred
    Microscale Combinatorial Libraries for the Discovery of High-Entropy Materials
    In: Advanced Materials Jg. 35 (2023) Nr. 9, 2207635
    Online Volltext: dx.doi.org/ (Open Access)
  • Wittmar, Alexandra; Vigneswaran, Thaarmikaa; Ranković, Nikola; Hagemann, Ulrich; Hartmann, Nils; Martínez-Hincapié, Ricardo; Čolić, Viktor; Ulbricht, Mathias
    N-Doped porous carbons obtained from chitosan and spent coffee as electrocatalysts with tuneable oxygen reduction reaction selectivity for H₂O₂ generation
    In: RSC Advances Jg. 13 (2023) Nr. 33, S. 22777 - 22788
    Online Volltext: dx.doi.org/ (Open Access)
  • Leichtweis, Jandira; Carissimi, Elvis; Hagemann, Ulrich; Ulbricht, Mathias; Fischer, Lukas
    NiFe₂O₄/biochar decorated porous polymer membranes for the flow-through photo-Fenton degradation of tetracycline
    In: Chemical Engineering Journal Jg. 477 (2023) 147203
    Online Volltext: dx.doi.org/
  • Fischer, Lukas; Volz, Anna; Hagemann, Ulrich; Ulbricht, Mathias
    Polymeric multi-composites with a tailored nickel microenvironment as catalytic flow-through membrane reactors for efficient p-nitrophenol degradation
    In: Chemical Engineering Journal Jg. 463 (2023) 142437
    Online Volltext: dx.doi.org/
  • Wittmar, Alexandra S. M.; Ropertz, Marcus; Braun, Michael; Hagemann, Ulrich; Andronescu, Corina; Ulbricht, Mathias
    Preparation of N-doped carbon materials from cellulose:chitosan blends and their potential application in electrocatalytic oxygen reduction
    In: Polymer Bulletin Jg. 80 (2023) Nr. 7, S. 7827 - 7845
    Online Volltext: dx.doi.org/ (Open Access)
  • Xiang, Weikai; Yang, Nating; Li, Xiaopeng; Linnemann, Julia; Hagemann, Ulrich; Ruediger, Olaf; Heidelmann, Markus; Falk, Tobias; Aramini, Matteo; DeBeer, Serena; Muhler, Martin; Tschulik, Kristina; Li, Tong
    3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen evolution reaction
    In: Nature Communications Jg. 13 (2022) Nr. 1, 179
    Online Volltext: dx.doi.org/ (Open Access)
  • Dreyer, Maik; Hagemann, Ulrich; Heidelmann, Markus; Budiyanto, Eko; Cosanne, Nicolas; Friedel Ortega, Klaus; Najafishirtari, Sharif; Hartmann, Nils; Tüysüz, Harun; Behrens, Malte
    Beneficial Effects of Low Iron Contents on Cobalt‐Containing Spinel Catalysts in the Gas Phase 2‐Propanol Oxidation
    In: ChemCatChem Jg. 14 (2022) Nr. 18, e202200472
    Online Volltext: dx.doi.org/ (Open Access)
  • Dubey, Astita; Keat, Chin Hon; Shvartsman, Vladimir V.; Yusenko, Kirill V.; Escobar Castillo, Marianela; Buzanich, Ana Guilherme; Hagemann, Ulrich; Kovalenko, Sergey A.; Stähler, Julia; Lupascu, Doru C.
    Mono-, Di-, and Tri-Valent Cation Doped BiFe₀.₉₅Mn₀.₀₅O₃ Nanoparticles : Ferroelectric Photocatalysts
    In: Advanced Functional Materials Jg. 32 (2022) Nr. 43, 2207105
    Online Volltext: dx.doi.org/ (Open Access)
  • Brix, Ann Cathrin; Dreyer, Maik; Koul, Adarsh; Krebs, Moritz; Rabe, Anna; Hagemann, Ulrich; Varhade, Swapnil; Andronescu, Corina; Behrens, Malte; Schuhmann, Wolfgang; Morales, Dulce M.
    Structure-Performance Relationship of LaFe₁₋ₓCoₓO₃ Electrocatalysts for Oxygen Evolution, Isopropanol Oxidation, and Glycerol Oxidation
    In: ChemElectroChem Jg. 9 (2022) Nr. 4, e202200092
    Online Volltext: dx.doi.org/ (Open Access)
  • Thiemann, Fabian; Sciaini, G.; Kassen, A.; Hagemann, Ulrich; Meyer zu Heringdorf, Frank; Horn-von Hoegen, Michael
    Ultrafast transport-mediated homogenization of photoexcited electrons governs the softening of the A1g phonon in bismuth
    In: Physical Review B Jg. 106 (2022) Nr. 1, 014315
    Online Volltext: dx.doi.org/ (Open Access)
  • BalaKrishnan, Arjun; Blanc, Niclas; Hagemann, Ulrich; Gemagami, Parham; Wonner, Kevin; Tschulik, Kristina; Li, Tong
    Direct Detection of Surface Species Formed on Iridium Electrocatalysts during the Oxygen Evolution Reaction
    In: Angewandte Chemie International Edition Jg. 60 (2021) Nr. 39, S. 21396 - 21403
    Online Volltext: dx.doi.org/ (Open Access)
  • Pollmann, Erik; Sleziona, Stephan; Foller, Tobias; Hagemann, Ulrich; Gorynski, Claudia; Petri, Oliver; Madauß, Lukas; Breuer, Lars; Schleberger, Marika
    Large-Area, Two-Dimensional MoS2 Exfoliated on Gold : Direct Experimental Access to the Metal–Semiconductor Interface
    In: ACS Omega Jg. 6 (2021) Nr. 24, S. 15929 - 15939
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Karlušić, Marko; Mičetić, Maja; Kresić, M.; Jakšić, Milko; Šantić, Branko; Bogdanović-Radović, Iva; Bernstorff, Sigrid; Lebius, Henning; Ban-d'Etat, Brigitte; Žužek Rožman, Kristina; O'Connell, Jacques; Hagemann, Ulrich; Schleberger, Marika
    Nanopatterning surfaces by grazing incidence swift heavy ion irradiation
    In: Applied Surface Science Jg. 541 (2021) S. 148467
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Omambac, Karim; Petrović, Marin; Bampoulis, Pantelis; Brand, Christian; Kriegel, Marko A.; Dreher, Pascal; Janoschka, David; Hagemann, Ulrich; Hartmann, Nils; Valerius, Philipp; Michely, Thomas; Meyer zu Heringdorf, Frank; Horn-von Hoegen, Michael
    Segregation-Enhanced Epitaxy of Borophene on Ir(111) by Thermal Decomposition of Borazine
    In: ACS Nano Jg. 15 (2021) Nr. 4, S. 7421 - 7429
    Online Volltext: dx.doi.org/
  • Angel, Steven; Tapia, Juan David; Gallego, Jaime; Hagemann, Ulrich; Wiggers, Hartmut
    Spray-Flame Synthesis of LaMnO₃₊δNanoparticles for Selective CO Oxidation (SELOX)
    In: Energy & Fuels Jg. 35 (2021) Nr. 5, S. 4367 - 4376
    Online Volltext: dx.doi.org/
  • Dreyer, Maik; Cruz, Daniel; Hagemann, Ulrich; Zeller, Patrick; Heidelmann, Markus; Salamon, Soma; Landers, Joachim; Rabe, Anna; Friedel Ortega, Klaus; Najafishirtari, Sharif; Wende, Heiko; Hartmann, Nils; Knop-Gericke, Axel; Schlögl, Robert; Behrens, Malte
    The Effect of Water on the 2-Propanol Oxidation Activity of Co-Substituted LaFe₁−CoₓO₃ Perovskites
    In: Chemistry - A European Journal Jg. 27 (2021) Nr. 68: Special Issue: Contemporary Challenges in Catalysis, S. 17127 - 17144
    Online Volltext: dx.doi.org/ (Open Access)
  • Rabe, Anna; Büker, Julia; Salamon, Soma; Koul, Adarsh; Hagemann, Ulrich; Landers, Joachim; Friedel Ortega, Klaus; Peng, Baoxiang; Muhler, Martin; Wende, Heiko; Schuhmann, Wolfgang; Behrens, Malte
    The Roles of Composition and Mesostructure of Cobalt-Based Spinel Catalysts in Oxygen Evolution Reactions
    In: Chemistry - A European Journal Jg. 27 (2021) Nr. 68, S. 17038 - 17048
    Online Volltext: dx.doi.org/ (Open Access)
  • Madauß, Lukas; Pollmann, Erik; Foller, Tobias; Schumacher, Jens; Hagemann, Ulrich; Heckhoff, Tobias; Herder, Matthias; Skopinski, Lucia; Breuer, Lars; Hierzenberger, Anke; Wittmar, Alexandra; Lebius, Henning; Benyagoub, Abdenacer; Ulbricht, Mathias; Joshi, Rakesh; Schleberger, Marika
    A swift technique to hydrophobize graphene and increase its mechanical stability and charge carrier density
    In: npj 2D Materials and Applications Jg. 4 (2020) Nr. 1, 11
    Online Volltext: dx.doi.org/ (Open Access)
  • Naveed-Ul-Haq, M.; Shvartsman, Vladimir; Trivedi, Harsh; Salamon, Soma; Webers, Samira; Wende, Heiko; Hagemann, Ulrich; Schröder, Jörg; Lupascu, Doru C.
    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 - 92
    Online Volltext: dx.doi.org/ (Open Access)
  • Alkan, Baris; Medina, Danea; Landers, Joachim; Heidelmann, Markus; Hagemann, Ulrich; Salamon, Soma; Andronescu, Corina; Wende, Heiko; Schulz, Christof; Schuhmann, Wolfgang; Wiggers, Hartmut
    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 - 2495
    Online Volltext: dx.doi.org/ (Open Access)
  • Dubey, Astita; Escobar Castillo, Marianela; Landers, Joachim; Salamon, Soma; Wende, Heiko; Hagemann, Ulrich; Gemeiner, Pascale; Dkhil, Brahim; Shvartsman, Vladimir; Lupascu, Doru C.
    Effect of Mn and Ba Codoping on a Magnetic Spin Cycloid of Multiferroic Bismuth Ferrite Nanoparticles
    In: Journal of Physical Chemistry C: Nanomaterials and Interfaces Jg. 124 (2020) Nr. 40, S. 22266 - 22277
    Online Volltext: dx.doi.org/
  • Saddeler, Sascha; Hagemann, Ulrich; Schulz, Stephan
    Effect of the Size and Shape on the Electrocatalytic Activity of Co₃O₄Nanoparticles in the Oxygen Evolution Reaction
    In: Inorganic Chemistry Jg. 59 (2020) Nr. 14, S. 10013 - 10024
    Online Volltext: dx.doi.org/
  • Tigges, Sebastian; Wöhrl, Nicolas; Radev, Ivan; Hagemann, Ulrich; Heidelmann, Markus; Nguyen, Thai Binh; Gorelkov, Stanislav; Schulz, Stephan; Lorke, Axel
    One-step synthesis of carbon-supported electrocatalysts
    In: Beilstein Journal of Nanotechnology Jg. 11 (2020) S. 1419 - 1431
    Online Volltext: dx.doi.org/ (Open Access)
  • Alkan, Baris; Medina, Danea; Landers, Joachim; Heidelmann, Markus; Hagemann, Ulrich; Salamon, Soma; Andronescu, Corina; Wende, Heiko; Schulz, Christof; Schuhmann, Wolfgang; Wiggers, Hartmut
    Spray-Flame-Prepared LaCo₁–ₓFeₓO₃ Perovskite Nanoparticles as Active OER Catalysts : Influence of Fe Content and Low-Temperature Heating
    In: ChemElectroChem Jg. 7 (2020) Nr. 12, S. 2564 - 2574
    Online Volltext: dx.doi.org/ (Open Access)
  • Tigges, Sebastian; Wöhrl, Nicolas; Hagemann, Ulrich; Ney, Marcel; Lorke, Axel
    The effect of metal-oxide incorporation on the morphology of carbon nanostructures
    In: Journal of Physics D: Applied Physics Jg. 53 (2020) Nr. 14, S. 145206
    Online Volltext: dx.doi.org/ (Open Access)
  • Kalus, Mark; Lanyumba, Riskyanti; Lorenzo-Parodi, Nerea; Jochmann, Maik; Kerpen, Klaus; Hagemann, Ulrich; Schmidt, Torsten Claus; Barcikowski, Stephan; Gökce, Bilal
    Correction : Determining the role of redox-active materials during laser-induced water decomposition
    In: Physical Chemistry, Chemical Physics (PCCP) Jg. 21 (2019) Nr. 43, S. 24239
    Online Volltext: dx.doi.org/ (Open Access)
  • Kalus, Mark; Lanyumba, Riskyanti; Lorenzo-Parodi, Nerea; Jochmann, Maik; Kerpen, Klaus; Hagemann, Ulrich; Schmidt, Torsten Claus; Barcikowski, Stephan; Gökce, Bilal; Lorenzo Parodi, Nerea
    Determining the role of redox-active materials during laser-induced water decomposition
    In: Physical Chemistry, Chemical Physics (PCCP) Jg. 21 (2019) Nr. 34, S. 18636 - 18651
    Online Volltext: dx.doi.org/
  • Stanchik, A.V.; Gremenok, V.F.; Juskenas, R.; Tyukhov, Igor I.; Tivanov, M.S.; Fettkenhauer, Christian; Shvartsman, Vladimir; Giraitis, R.; Hagemann, Ulrich; Lupascu, Doru C.
    Effects of selenization time and temperature on the growth of Cu₂ZnSnSe₄ thin films on a metal substrate for flexible solar cells
    In: Solar Energy Jg. 178 (2019) S. 142 - 149
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Beyer, Christopher; Dohmen, Ralf; Rogalla, Detlef; Becker, Hans-Werner; Marquardt, Katharina; Vollmer, Christian; Hagemann, Ulrich; Hartmann, Nils; Chakraborty, Sumit
    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 processes
    In: American Mineralogist Jg. 104 (2019) Nr. 4, S. 557 - 568
    Online Volltext: dx.doi.org/
  • Pappert, Kevin; Loza, Kateryna; Shviro, Meital; Hagemann, Ulrich; Heggen, Marc; Dunin-Borkowski, Rafal E.; Schierholz, Roland; Maeda, Takuya; Kaneko, Kenji; Epple, Matthias
    Nanoscopic Porous Iridium/Iridium Dioxide Superstructures (15 nm) : Synthesis and Thermal Conversion by In Situ Transmission Electron Microscopy
    In: Chemistry - A European Journal Jg. 25 (2019) Nr. 47, S. 11048 - 11057
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Haxhiaj, Ina; Tigges, Sebastian; Firla, Damian; Zhang, Xiaorui; Hagemann, Ulrich; Kondo, Takahiro; Nakamura, Junji; Marzun, Galina; Barcikowski, Stephan
    Platinum nanoparticles supported on reduced graphene oxide prepared in situ by a continuous one-step laser process
    In: Applied Surface Science Jg. 469 (2019) S. 811 - 820
    Online Volltext: dx.doi.org/
  • Speich, Claudia; Dissinger, Frank; Liborius, Lisa; Hagemann, Ulrich; Waldvogel, Siegfried R.; Tegude, Franz-Josef; Prost, Werner
    Process Development for Wet-Chemical Surface Functionalization of Gallium Arsenide Based Nanowires
    In: Physica Status Solidi (B): Basic Solid State Physics (2019) S. 1800678
    Online Volltext: dx.doi.org/
  • Ruks, Tatjana; Beuck, Christine; Schaller, Torsten; Niemeyer, Felix; Zähres, Manfred; Loza, Kateryna; Heggen, Marc; Hagemann, Ulrich; Mayer, Christian; Bayer, Peter; Epple, Matthias
    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 - 778
    Online Volltext: dx.doi.org/
  • Hagemann, Ulrich; Huba, Kornelia; Nienhaus, Hermann
    Measuring displacement currents during fabrication of Mg/Si Schottky diodes due to band-bending evolution
    In: Journal of Applied Physics Jg. 124 (2018) Nr. 22, S. 225302
    Online Volltext: dx.doi.org/
  • Naveed-Ul-Haq, M.; Shvartsman, Vladimir; Trivedi, Harsh; Salamon, Soma; Webers, Samira; Wende, Heiko; Hagemann, Ulrich; Schröder, Jörg; Lupascu, Doru C.
    Strong converse magnetoelectric effect in (Ba,Ca)(Zr,Ti)O3 - NiFe2O4 multiferroics : a relationship between phase-connectivity and interface coupling
    In: Acta Materialia Jg. 144 (2018) S. 305 - 313
    Online Volltext: dx.doi.org/
  • Bahners, Thomas; Gebert, Beate; Prager, Andrea; Hartmann, Nils; Hagemann, Ulrich; Gutmann, Jochen Stefan
    UV-light assisted patterned metallization of textile fabrics
    In: Applied Surface Science Jg. 436 (2018) S. 1093 - 1103
    Online Volltext: dx.doi.org/
  • Waag, Friedrich; Gökce, Bilal; Kalapu, Chakrapani; Bendt, Georg; Salamon, Soma; Landers, Joachim; Hagemann, Ulrich; Heidelmann, Markus; Schulz, Stephan; Wende, Heiko; Hartmann, Nils; Behrens, Malte; Barcikowski, Stephan
    Adjusting the catalytic properties of cobalt ferrite nanoparticles by pulsed laser fragmentation in water with defined energy dose
    In: Scientific Reports Jg. 7 (2017) Nr. 1, S. 13161
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Lau, Marcus; Straube, Thomas; Aggarwal, A. Vikas; Hagemann, Ulrich; De Oliveira Viestel, Bernardo; Hartmann, Nils; Textor, Torsten; Lutz, Harald; Gutmann, Jochen Stefan; Barcikowski, Stephan
    Gradual modification of ITO particle's crystal structure and optical properties by pulsed UV laser irradiation in a free liquid jet
    In: Dalton Transactions Jg. 46 (2017) Nr. 18, S. 6039 - 6048
    Online Volltext: dx.doi.org/
  • Schaumann, Julian; Loor, Manuel; Ünal, Deria; Mudring, Anja; Heimann, Stefan; Hagemann, Ulrich; Schulz, Stephan; Maculewicz, Franziska; Schierning, Gabi
    Improving the zT value of thermoelectrics by nanostructuring : Tuning the nanoparticle morphology of Sb2Te3 by ionic liquids
    In: Dalton Transactions Jg. 46 (2017) Nr. 3, S. 656 - 668
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Rytlewski, Piotr; Bahners, Thomas; Polewski, Filip; Gebert, Beate; Gutmann, Jochen Stefan; Hartmann, Nils; Hagemann, Ulrich; Moraczewski, Krzysztof
    Laser-induced surface activation of biocomposites for electroless metallization
    In: Surface and Coatings Technology Jg. 311 (2017) S. 104 - 112
    Online Volltext: dx.doi.org/
  • Petrović, Marin; Hagemann, Ulrich; Horn-von Hoegen, Michael; Meyer zu Heringdorf, Frank
    Microanalysis of single-layer hexagonal boron nitride islands on Ir(111)
    In: Applied Surface Science Jg. 420 (2017) S. 504 - 510
    Online Volltext: dx.doi.org/ (Open Access)
  • Loor, Manuel; Bendt, Georg; Schaumann, Julian; Hagemann, Ulrich; Heidelmann, Markus; Wölper, Christoph; Schulz, Stephan
    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 - 68
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Daumann, S.; Andrzejewski, Dominik; Di Marcantonio, M.; Hagemann, Ulrich; Wepfer, Svenja; Vollkommer, F.; Bacher, Gerd; Epple, Matthias; Nannen, Ekaterina
    Water-free synthesis of ZnO quantum dots for application as an electron injection layer in light-emitting electrochemical cells
    In: Journal of Materials Chemistry C: Materials for Optical and Electronic Devices Jg. 5 (2017) Nr. 9, S. 2344 - 2351
    Online Volltext: dx.doi.org/
  • Fischer, Mathias; Hormes, Josef; Marzun, Galina; Wagener, Philipp; Hagemann, Ulrich; Barcikowski, Stephan
    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 - 8802
    Online Volltext: dx.doi.org/
  • Bendt, Georg; Schiwon, Raphael; Salamon, Soma; Landers, Joachim; Hagemann, Ulrich; Limberg, Christian; Wende, Heiko; Schulz, Stephan
    Molecular design for tailoring a single-source precursor for bismuth ferrite
    In: Inorganic Chemistry Jg. 55 (2016) Nr. 15, S. 7542 - 7549
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Schade, Linda; Franzka, Steffen; Thomas, Marc; Hagemann, Ulrich; Hartmann, Nils
    Resonant laser processing of nanoparticulate Au/TiO2 films on glass supports : Photothermal modification of a photocatalytic nanomaterial
    In: Surface Science Jg. 650 (2016) S. 57 - 63
    Online Volltext: dx.doi.org/
  • Loor, Manuel; Bendt, Georg; Hagemann, Ulrich; Wölper, Christoph; Assenmacher, Wilfried; Schulz, Stephan
    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 - 15335
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Xiao, Lisong; Schroeder, Matthias; Kluge, Sebastian; Balducci, Andrea; Hagemann, Ulrich; Schulz, Christof; Wiggers, Hartmut
    Direct self-assembly of Fe2O3/reduced graphene oxide nanocomposite for high-performance lithium-ion battery
    In: Journal of Materials Chemistry A: Materials for Energy and Sustainability Jg. 3 (2015) Nr. 21, S. 11566 - 11574
    Online Volltext: dx.doi.org/ (Open Access)
  • Hagemann, Ulrich; Nienhaus, Hermann
    Surface plasmon coupled chemiluminescence during adsorption of oxygen on magnesium surfaces
    In: The Journal of Chemical Physics (JCP) Jg. 143 (2015) Nr. 24, S. 244703
    Online Volltext: dx.doi.org/
  • Bendt, Georg; Sonntag, Jens; Lorke, Axel; Assenmacher, Wilfried; Hagemann, Ulrich; Schulz, Stephan
    Van der Waals epitaxial MOCVD-growth of (BixSb1-x)2Te3 (0
    In: Semiconductor Science and Technology Jg. 30 (2015) Nr. 8, S. 085021
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Merk, Vivian; Rehbock, Christoph; Becker, Felix; Hagemann, Ulrich; Nienhaus, Hermann; Barcikowski, Stephan
    In situ non-DLVO stabilization of surfactant-free, plasmonic gold nanoparticles : effect of Hofmeister's anions
    In: Langmuir Jg. 30 (2014) Nr. 15, S. 4213 - 4222
    Online Volltext: dx.doi.org/
  • Hagemann, Ulrich; Nienhaus, Hermann
    Quantum size effects in chemicurrent measurements during low-temperature oxidation of Mg(0001) epilayers
    In: New Journal of Physics (NJP) Jg. 16 (2014) S. 113035
    Online Volltext: dx.doi.org/ (Open Access)
  • Becker, Felix; Krix, David; Hagemann, Ulrich; Nienhaus, Hermann
    Internal detection of surface plasmon coupled chemiluminescence during chlorination of potassium thin films
    In: The Journal of Chemical Physics (JCP) Jg. 138 (2013) Nr. 3, S. 034710-1 - 034710-6
    Online Volltext: dx.doi.org/
  • Nienhaus, Hermann; Karacuban, Hatice; Krix, David; Becker, Felix; Hagemann, Ulrich; Steeger, Doris; Bywalez, Robert; Schulz, Christof; Wiggers, Hartmut
    Low temperature diffusion of Li atoms into Si nanoparticles and surfaces
    In: Journal of Applied Physics Jg. 114 (2013) Nr. 3, 034310
    Online Volltext: dx.doi.org/
  • Hagemann, Ulrich; Krix, David; Nienhaus, Hermann
    Electronic excitations generated by the deposition of Mg on Mg films
    In: Physical Review Letters Jg. 104 (2010) Nr. 2, S. 028301
    Online Volltext: dx.doi.org/
  • Hagemann, Ulrich; Timmer, Matthias; Krix, David; Kratzer, Peter; Nienhaus, Hermann
    Electronic excitations in magnesium epitaxy: Experiment and theory
    In: Physical Review B: Condensed matter and materials physics Jg. 82 (2010) Nr. 15, 155420-1-9
    Online Volltext: dx.doi.org/

    • Dissertation

  • Hagemann, Ulrich;
    Quantum size effects in Mg epilayers on Si (111) : enhancement of photoelectron yield and oxidation rate
    Duisburg, Essen (2015) 207 S.
    Online Volltext

    • Forschungsberichte

  • Hagemann, Ulrich
    Angle Resolved XPS - ARXPS
    In: ICAN Notes Jg. 3 (2021)
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Hagemann, Ulrich
    Focus Track – How to minimize and compensate z-Axis drift using the Renishaw InVia Raman microscope
    In: ICAN Notes Jg. 5 (2021)
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)

    • Vorträge

  • Deike, Rüdiger; Smaha, Bartosz; Müller, Ulrich; Hagemann, Ulrich; Heidelmann, Markus; Kiesler, Dennis;
    Neue Erkenntnisse zur Keimbildung bei GJS
    Österreichische Gießereitagung ; Gurten, 27.-28. April 2017,
    Gurten, Österreich (2017)