Jan Knudsen

Operando hysteresis of a palladium surface during high-frequency gas-pulsing of ethylene into oxygen

Ulrike Küst, Calley Eads, Julia Prumbs, Weijia Wang, Robert Temperton, et al.
(2026) Surface Science, 766
Journal article

Self-Stabilized Heterometallic Pair Sites for Selective Ethanol Dehydrogenation on Pt–Cr–Ag Alloy Catalysts

Jason F. Weaver, Shuting Xiang, Jovenal Jamir, Ulrike Küst, Lisa Rämisch, et al.
(2025) Angewandte Chemie - International Edition, 64
Journal article

Carbon subsurface traffic jam as driver for methane oxidation activity and selectivity on palladium surfaces

Ulrike Küst, Rosemary Jones, Julia Prumbs, Alessandro Namar, Mattia Scardamaglia, et al.
(2025) Nature Communications, 16
Journal article

The low and high coverage adsorption structure of CO on unreconstructed Ir(100)-(1×1)

Mohammad Alif Arman, Edvin Lundgren, Jan Knudsen
(2025) Surface Science, 761
Journal article

Persistence of Ce³⁺ species on the surface of ceria during redox cycling : a modulated chemical excitation investigation

C. Hachemi, H. Dib, M. Debbichi, M. Badawi, C. Eads, et al.
(2025) Physical Chemistry Chemical Physics, 27 p.12069-12079
Journal article

Boron-Embedded Cluster Superlattices on Graphene on Ir(111)

Stefan Schulte, Tobias Hartl, Catherine Grover, Alexei Preobrajenski, Jan Knudsen, et al.
(2025) Journal of Physical Chemistry C, 129 p.6967-6975
Journal article

Catalysis in Frequency Space : Resolving Hidden Oscillating Minority Phases and Their Catalytic Properties

Jan Knudsen, Calley Eads, Alexander Klyushin, Robert Temperton, Ulrike Küst, et al.
(2025) ACS Catalysis, 15 p.1655-1662
Journal article

Hydroxylation of an ultrathin Co₃O₄(111) film on Ir(100) studied by in situ ambient pressure XPS and DFT

Thomas Haunold, Krešimir Anić, Alexander Genest, Christoph Rameshan, Matteo Roiaz, et al.
(2025) Surface Science, 751
Journal article

Comparing phase sensitive detection and Fourier analysis of modulation excitation spectroscopy data exemplified by Ambient Pressure X-ray Photoelectron Spectroscopy

Ulrike Küst, Julia Prumbs, Calley Eads, Weijia Wang, Virginia Boix, et al.
(2025) Surface Science, 751
Journal article

Ambient pressure XPS at MAX IV

Mattia Scardamaglia, Ulrike Küst, Alexander Klyushin, Rosemary Jones, Jan Knudsen, et al.
(2025) Beilstein Journal of Nanotechnology, 16 p.1677-1694
Journal article review

Engineering 2D Materials from Single-Layer NbS₂

Timo Knispel, Daniela Mohrenstecher, Carsten Speckmann, Affan Safeer, Camiel van Efferen, et al.
(2025) Small, 21
Journal article

Time-resolved ambient pressure x-ray photoelectron spectroscopy : Advancing the operando study of ALD chemistry

Rosemary Jones, Esko Kokkonen, Calley Eads, Ulrike K. Küst, Julia Prumbs, et al.
(2025) Surface Science, 753
Journal article

Resolving active species during the carbon monoxide oxidation over Pt(111) on the microsecond timescale

Calley N. Eads, Weijia Wang, Ulrike Küst, Julia Prumbs, Robert H. Temperton, et al.
(2025) Nature Communications, 16
Journal article

Versatile synthesis of nanosized Ni–CeO₂catalysts with tunable composition for power-to-gas applications

Mathias Barreau, Fengchen Zhou, Anastasia Pappa, Bachchar Hadrane, Ulrike Küst, et al.
(2025) Journal of Materials Chemistry A
Journal article

Temperature-Dependent Selectivity and Detection of Hidden Carbon Deposition in Methane Oxidation

Ulrike Küst, Weijia Wang, Changda Wang, Helena Hagelin-Weaver, Johan Gustafson, et al.
(2024) ACS Catalysis, 14 p.5978-5986
Journal article

2D Vanadium Sulfides : Synthesis, Atomic Structure Engineering, and Charge Density Waves

Camiel van Efferen, Joshua Hall, Nicolae Atodiresei, Virginia Boix, Affan Safeer, et al.
(2024) ACS Nano, 18 p.14161-14175
Journal article

Activity and segregation behavior of Pd_75%Ag_25%(1 1 1) during CO oxidation – An in situ NAP-XPS investigation

Ingeborg Helene Svenum, Marie D. Strømsheim, Jan Knudsen, Hilde J. Venvik
(2023) Journal of Catalysis, 417 p.194-201
Journal article

Graphene as an Adsorption Template for Studying Double Bond Activation in Catalysis

Virginia Boix, Wenbin Xu, Giulio D'Acunto, Johannes Stubbe, Tamires Gallo, et al.
(2022) Journal of Physical Chemistry C, 126 p.14116-14124
Journal article

Following the Kinetics of Undercover Catalysis with APXPS and the Role of Hydrogen as an Intercalation Promoter

Virginia Boix, Mattia Scardamaglia, Tamires Gallo, Giulio D'Acunto, Marie Døvre Strømsheim, et al.
(2022) ACS Catalysis, 12 p.9897-9907
Journal article

Oxidation of a Platinum-Tin Alloy Surface during Catalytic CO Oxidation

Harald J. Wallander, Freddy E. Oropeza, Benjamin Hagman, Jan Knudsen, Edvin Lundgren, et al.
(2022) Journal of Physical Chemistry C, 126 p.6258-6266
Journal article

Water Chemistry beneath Graphene : Condensation of a Dense OH-H₂O Phase under Graphene

Elin Grånäs, Ulrike A. Schröder, Mohammad A. Arman, Mie Andersen, Timm Gerber, et al.
(2022) Journal of Physical Chemistry C, 126 p.4347-4354
Journal article

Segregation dynamics of a Pd-Ag surface during CO oxidation investigated by NAP-XPS

Marie D. Strømsheim, Ingeborg Helene Svenum, Mehdi Mahmoodinia, Virgínia Boix, Jan Knudsen, et al.
(2022) Catalysis Today, 384-386 p.265-273
Journal article

Stroboscopic operando spectroscopy of the dynamics in heterogeneous catalysis by event-averaging

Jan Knudsen, Tamires Gallo, Virgínia Boix, Marie Døvre Strømsheim, Giulio D’Acunto, et al.
(2021) Nature Communications, 12
Journal article

Carbon Embedding of Pt Cluster Superlattices Templated by Hexagonal Boron Nitride on Ir(111)

Tobias Hartl, Moritz Will, Pantelis Bampoulis, Daniel Herrmann, Philipp Valerius, et al.
(2021) Journal of Physical Chemistry C, 125 p.23435-23444
Journal article

Gas Pulse-X-Ray Probe Ambient Pressure Photoelectron Spectroscopy with Submillisecond Time Resolution

Andrey Shavorskiy, Giulio D'Acunto, Virginia Boix De La Cruz, Mattia Scardamaglia, Suyun Zhu, et al.
(2021) ACS Applied Materials and Interfaces, 13 p.47629-47641
Journal article

Area-selective Electron-beam induced deposition of Amorphous-BN_x on graphene

Virgínia Boix, Claudia Struzzi, Tamires Gallo, Niclas Johansson, Giulio D'acunto, et al.
(2021) Applied Surface Science, 557 p.149806-149806
Journal article

Growth, stability, and electronic decoupling of Pt clusters on h-BN/Ir(111)

Moritz Will, Tobias Hartl, Virginia Boix De La Cruz, Paolo Lacovig, Silvano Lizzit, et al.
(2021) Journal of Physical Chemistry C, 125 p.3880-3889
Journal article

Upgrade of the SPECIES beamline at the MAX IV Laboratory

Esko Kokkonen, Felipe Lopes da Silva, Mikko Heikki Mikkelã, Niclas Johansson, Shih Wen Huang, et al.
(2021) Journal of Synchrotron Radiation, 28 p.588-601
Journal article

Time Resolved Ambient Pressure X-ray Photoelectron Spectroscopy

Andrey Shavorskiy, Joachim Schnadt, Jan Knudsen
(2021) ACS Symposium Series, 1396 p.219-248
Book chapter

HIPPIE : a new platform for ambient-pressure X-ray photoelectron spectroscopy at the MAX IV Laboratory

Suyun Zhu, Mattia Scardamaglia, Jan Kundsen, Rami Sankari, Hamed Tarawneh, et al.
(2021) Journal of Synchrotron Radiation, 28 p.624-636
Journal article

Comparative study of copper oxidation protection with graphene and hexagonal boron nitride

Mattia Scardamaglia, Virginia Boix, Giulio D'Acunto, Claudia Struzzi, Nicolas Reckinger, et al.
(2021) Carbon, 171 p.610-617
Journal article

A five-axis parallel kinematic mirror unit for soft X-ray beamlines at MAX IV

Marcus Agåker, Frieder Mueller, Brian Norsk Jensen, Karl Åhnberg, Peter Sjöblom, et al.
(2020) Journal of Synchrotron Radiation, 27 p.262-271
Journal article

Cluster Superlattice Membranes

Tobias Hartl, Moritz Will, Davor Čapeta, Rajendra Singh, Daniel Scheinecker, et al.
(2020) ACS Nano, 14 p.13629-13637
Journal article

Present and new frontiers in materials research by ambient pressure x-ray photoelectron spectroscopy

Joachim Schnadt, Jan Knudsen, Niclas Johansson
(2020) Journal of Physics: Condensed Matter, 32
Journal article review

Self-cleaning and surface chemical reactions during hafnium dioxide atomic layer deposition on indium arsenide

Rainer Timm, Ashley R. Head, Sofie Yngman, Johan V. Knutsson, Martin Hjort, et al.
(2018) Nature Communications, 9
Journal article

In situ NAP-XPS spectroscopy during methane dry reforming on ZrO₂/Pt(1 1 1) inverse model catalyst

C. Rameshan, H. Li, K. Anic, M. Roiaz, V. Pramhaas, et al.
(2018) Journal of Physics: Condensed Matter, 30
Journal article

Adsorption of CO on the Fe₃O₄(001) Surface

Jan Hulva, Zdeněk Jakub, Zbynek Novotny, Niclas Johansson, Jan Knudsen, et al.
(2018) Journal of Physical Chemistry B, 122 p.721-729
Journal article

Thin-Film Growth and Oxidation of Surfaces Under Relevant Pressure Conditions

Joachim Schnadt, Jan Knudsen, Andrey Shavorskiy
(2018) Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry : Thin-Film Growth and Oxidation of Surfaces Under Relevant Pressure Conditions, 1 p.699-710
Book chapter

Exciting H2 Molecules for Graphene Functionalization

Line Kyhl, Régis Bisson, Richard Balog, Michael N. Groves, Esber Leonhard Kolsbjerg, et al.
(2017) ACS Nano
Journal article

Annealing of ion-irradiated hexagonal boron nitride on Ir(111)

Philipp Valerius, Charlotte Herbig, Moritz Will, Mohammad A. Arman, Jan Knudsen, et al.
(2017) Physical Review B, 96
Journal article

Near Ambient Pressure XPS Investigation of CO Oxidation Over Pd₃Au(100)

Marie D. Strømsheim, Jan Knudsen, Mari Helene Farstad, Linn Sørvik, Xiaoyang Guo, et al.
(2017) Topics in Catalysis, 60 p.1439-1448
Journal article

Ambient pressure phase transitions over Ir(1 1 1): at the onset of CO oxidation

Niclas Johansson, Mie Andersen, Yuji Monya, Jesper N Andersen, Hiroshi Kondoh, et al.
(2017) Journal of Physics: Condensed Matter, 29
Journal article

Sonogashira cross-coupling over Au(1 1 1): from UHV to ambient pressure

Niclas Johansson, Sheetal Sisodiya, Payam Shayesteh, Shilpi Chaudhary, Jesper N Andersen, et al.
(2017) Journal of Physics: Condensed Matter, 29
Journal article

Preventing sintering of nanoclusters on graphene by radical adsorption

Antonio J Martínez-Galera, Ulrike A Schröder, Charlotte Herbig, M. A. Arman, J. Knudsen, et al.
(2017) Nanoscale, 9 p.13618-13629
Journal article

From Permeation to Cluster Arrays : Graphene on Ir(111) Exposed to Carbon Vapor

Charlotte Herbig, Timo Knispel, Sabina Simon, Ulrike A Schröder, Antonio J Martínez-Galera, et al.
(2017) Nano Letters, 17 p.3105-3112
Journal article

Core level shifts of intercalated graphene

Ulrike A Schröder, Marin Petrović, Timm Gerber, Antonio J Martínez-Galera, Elin Grånäs, et al.
(2017) 2D Materials, 4
Journal article

The SPECIES beamline at the MAX IV Laboratory : A facility for soft X-ray RIXS and APXPS

Samuli Urpelainen, Joachim Schnadt, Jan Knudsen, Franz Hennies, Conny Såthe, et al.
(2017) Journal of Synchrotron Radiation, 24 p.344-353
Journal article

Interaction of sulfur dioxide and near-ambient pressures of water vapor with cuprous oxide surfaces

Markus Soldemo, Joakim Halldin Stenlid, Zahra Besharat, Niclas Johansson, Anneli Önsten, et al.
(2017) Journal of Physical Chemistry C, 121 p.24011-24024
Journal article

Co3O4(100) films grown on Ag(100): Structure and chemical properties

Alif Arman, Lindsay Merte, Edvin Lundgren, Jan Knudsen
(2017) Surface Science, 657 p.90-95
Journal article

Adsorption of hydrogen on stable and metastable Ir(100) surfaces

Alif Arman, Andreas Klein, Pascal Ferstl, Abhilash Valookaran, Johan Gustafson, et al.
(2017) Surface Science, 656 p.66-76
Journal article

Symmetry-Driven Band Gap Engineering in Hydrogen Functionalized Graphene

Jakob Holm Jørgensen, Antonija Grubišić Čabo, Richard Balog, Line Kyhl, Michael N. Groves, et al.
(2016) ACS Nano, 10 p.10798-10807
Journal article

Hydrogen intercalation under graphene on Ir(111)

Elin Grånäs, Timm Gerber, Ulrike A. Schröder, Karina Schulte, Jesper N. Andersen, et al.
(2016) Surface Science, 651 p.57-61
Journal article

Reversed Hysteresis during CO Oxidation over Pd₇₅Ag₂₅(100)

Vasco R. Fernandes, Maxime Van Den Bossche, Jan Knudsen, Mari H. Farstad, Johan Gustafson, et al.
(2016) ACS Catalysis, 6 p.4154-4161
Journal article

A versatile instrument for ambient pressure x-ray photoelectron spectroscopy : The Lund cell approach

Jan Knudsen, Jesper N. Andersen, Joachim Schnadt
(2016) Surface Science, 646 p.160-169
Journal article

Adsorption and Reaction of CO and NO on Ir(111) under Near Ambient Pressure Conditions

K. Ueda, K. Suzuki, R. Toyoshima, Y. Monya, M. Yoshida, et al.
(2016) Topics in Catalysis, 59 p.487-496
Journal article

Oxidation of Ultrathin FeO(111) Grown on Pt(111) : Spectroscopic Evidence for Hydroxylation

Niclas Johansson, Lindsay R. Merte, Elin Grånäs, Stefan Wendt, Jesper N. Andersen, et al.
(2016) Topics in Catalysis, 59 p.506-515
Journal article

Iron phthalocyanine on Cu(111): Coverage-dependent assembly and symmetry breaking, temperature-induced homocoupling, and modification of the adsorbate-surface interaction by annealing.

Olesia Snezhkova, Felix Bischoff, Yuanqin He, Alissa Wiengarten, Shilpi Chaudhary, et al.
(2016) Journal of Chemical Physics, 144
Journal article

Etching of graphene on Ir(111) with molecular oxygen

Ulrike A. Schroeder, Elin Grånäs, Timm Gerber, Mohammad A Arman, Antonio J. Martinez-Galera, et al.
(2016) Carbon, 96 p.320-331
Journal article

Adsorption and Activation of CO on Co3O4(111) Thin Films

P. Ferstl, S. Mehl, Mohammad A Arman, M. Schuler, A. Toghan, et al.
(2015) Journal of Physical Chemistry C, 119 p.16688-16699
Journal article

Interface Controlled Oxidation States in Layered Cobalt Oxide Nanoislands on Gold

Alex S. Walton, Jakob Fester, Michal Bajdich, Mohammad A Arman, Jacek Osiecki, et al.
(2015) ACS Nano, 9 p.2445-2453
Journal article

Correlation between stoichiometry and surface structure of the polar MgAl2O4(100) surface as a function of annealing temperature

Thomas N. Jensen, Morten K. Rasmussen, Jan Knudsen, Alina Vlad, Sergey Volkov, et al.
(2015) Physical Chemistry Chemical Physics, 17 p.5795-5804
Journal article

Xe irradiation of graphene on Ir(111): From trapping to blistering

Charlotte Herbig, E. Harriet Ahlgren, Ulrike A. Schroeder, Antonio J. Martinez-Galera, Mohammad A Arman, et al.
(2015) Physical Review B (Condensed Matter and Materials Physics), 92
Journal article

Adsorbate induced surface alloy formation investigated by near ambient pressure X-ray photoelectron spectroscopy

Anders Nierhoff, Christian Conradsen, David McCarthy, Tobias Peter Johansson, Jan Knudsen, et al.
(2015) Catalysis Today, 244 p.130-135
Journal article

Nature of the bias-dependent symmetry reduction of iron phthalocyanine on Cu(111)

Olesia Snezhkova, Johann Lueder, Alissa Wiengarten, Shiri R. Burema, Felix Bischoff, et al.
(2015) Physical Review B (Condensed Matter and Materials Physics), 92
Journal article

Epoxidation of olefins with molecular oxygen as the oxidant using gold catalysts supported on polyoxometalates

Emmanuel Tebandeke, Cristina Coman, Kevin Guillois, Griffin Canning, Evren Ataman, et al.
(2014) Green Chemistry, 16 p.1586-1593
Journal article

Real-time studies of the atomic layer deposition of metal oxides using Ambient pressure x-ray photoelectron spectroscopy

Joachim Schnadt, Ashley Head, Shilpi Chaudhary, Sofie Yngman, Niclas Johansson, et al.
(2014)
Conference paper: abstract

High-Coverage Oxygen-Induced Surface Structures on Ag(111)

Natalia Martin, S. Klacar, H. Gronbeck, Jan Knudsen, Joachim Schnadt, et al.
(2014) Journal of Physical Chemistry C, 118 p.15324-15331
Journal article

Water clustering on nanostructured iron oxide films

Lindsay Merte, Ralf Bechstein, Guowen Peng, Felix Rieboldt, Carrie A. Farberow, et al.
(2014) Nature Communications, 5
Journal article

In Situ Study of CO Oxidation on HOPG-Supported Pt Nanoparticles

Soeren Porsgaard, Luis K. Ono, Helene Zeuthen, Jan Knudsen, Joachim Schnadt, et al.
(2013) ChemPhysChem, 14 p.1553-1557
Journal article

CO-Induced Smoluchowski Ripening of Pt Cluster Arrays on the Graphene/Ir(111) Moire

Timm Gerber, Jan Knudsen, Peter J. Feibelman, Elin Grånäs, Patrick Stratmann, et al.
(2013) ACS Nano, 7 p.2020-2031
Journal article

CO Intercalation of Graphene on Ir(111) in the Millibar Regime

Elin Grånäs, Mie Andersen, Mohammad A Arman, Timm Gerber, Bjork Hammer, et al.
(2013) Journal of Physical Chemistry C, 117 p.16438-16447
Journal article

Use of astigmatic re-focusing at HP-XPS end-station

Walan Grizolli, Franz Hennies, Jan Knudsen, Ralf Nyholm, Rami Sankari, et al.
(2013) 11th International Conference on Synchrotron Radiation Instrumentation (SRI 2012), 425
Conference paper

In situ study of the oxidation of CO over Ir(111)

Jan Knudsen, Yuji Monya, Joachim Schnadt, Mohammad A Arman, Elin Grånäs, et al.
(2012)
Conference paper: abstract

Clusters binding to the graphene moire on Ir(111): X-ray photoemission compared to density functional calculations

Jan Knudsen, Peter J. Feibelman, Timm Gerber, Elin Grånäs, Karina Schulte, et al.
(2012) Physical Review B (Condensed Matter and Materials Physics), 85
Journal article

Oxygen Intercalation under Graphene on Ir(111): Energetics, Kinetics, and the Role of Graphene Edges.

Elin Grånäs, Jan Knudsen, Ulrike A Schröder, Timm Gerber, Carsten Busse, et al.
(2012) ACS Nano
Journal article

The new ambient-pressure X-ray photoelectron spectroscopy instrument at MAX-lab.

Joachim Schnadt, Jan Knudsen, Jesper N Andersen, Hans Siegbahn, Annette Pietzsch, et al.
(2012) Journal of Synchrotron Radiation, 19 p.701-704
Journal article

Stable Cation Inversion at the MgAl2O4(100) Surface

Morten K. Rasmussen, Adam S. Foster, Berit Hinnemann, Filippo F. Canova, Stig Helveg, et al.
(2011) Physical Review Letters, 107
Journal article

High-resolution core-level spectroscopy study of the ultrathin aluminum oxide film on NiAl(110)

Natalia Martin, Jan Knudsen, Sara Blomberg, Johan Gustafson, Jesper N Andersen, et al.
(2011) Physical Review B (Condensed Matter and Materials Physics), 83
Journal article

Modification of the Size of Supported Clusters by Coadsorption of an Organic Compound: Gold and l-Cysteine on Rutile TiO(2)(110).

Evren Ataman, Cristina Isvoranu, Jan Knudsen, Karina Schulte, Jesper N Andersen, et al.
(2011) Langmuir, 27 p.11466-11474
Journal article

Pyridine Adsorption on Single-Layer Iron Phthalocyanine on Au(111)

Cristina Isvoranu, Bin Wang, Evren Ataman, Karina Schulte, Jan Knudsen, et al.
(2011) Journal of Physical Chemistry C, 115 p.20201-20208
Journal article

Ammonia adsorption on iron phthalocyanine on Au(111): Influence on adsorbate-substrate coupling and molecular spin.

Cristina Isvoranu, Bin Wang, Evren Ataman, Karina Schulte, Jan Knudsen, et al.
(2011) Journal of Chemical Physics, 134
Journal article

The new ambient pressure x-ray photoelectron spectroscopy instrument at MAX-lab – an instrument also for ultrahigh vacuum studies

Joachim Schnadt, Jan Knudsen, Annette Pietzsch, Niclas Johansson, Anders Olsson, et al.
(2011)
Conference paper: abstract

Carbonate formation on p(4 x 4)-O/Ag(111)

Jan Knudsen, Natalia Martin, Elin Grånäs, Sara Blomberg, Johan Gustafson, et al.
(2011) Physical Review B (Condensed Matter and Materials Physics), 84
Journal article

Comparison of the Carbonyl and Nitrosyl Complexes Formed by Adsorption of CO and NO on Mono layers of Iron Phthalocyanine on Au(111)

Cristina Isvoranu, Bin Wang, Evren Ataman, Jan Knudsen, Karina Schulte, et al.
(2011) Journal of Physical Chemistry C, 115 p.24718-24727
Journal article

Jan Knudsen

Publications