Jan Knudsen

2025

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

Knudsen, J., Eads, C., Klyushin, A., Temperton, R., Küst, U., Boix, V., Kraina, A., Scardamaglia, M., Shavorskiy, A., Kokkonen, E. & Schnadt, J., 2025 Feb 7, In: ACS Catalysis. 15, 3, p. 1655-1662 8 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Küst, U., Prumbs, J., Eads, C., Wang, W., Boix, V., Klyushin, A., Scardamaglia, M., Temperton, R., Shavorskiy, A. & Knudsen, J., 2025 Jan, In: Surface Science. 751, 122612.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Haunold, T., Anić, K., Genest, A., Rameshan, C., Roiaz, M., Li, H., Wicht, T., Knudsen, J. & Rupprechter, G., 2025 Jan, In: Surface Science. 751, 122618.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Eads, C. N., Wang, W., Küst, U., Prumbs, J., Temperton, R. H., Scardamaglia, M., Schnadt, J., Knudsen, J. & Shavorskiy, A., 2025, In: Nature Communications. 16, 1, 1216.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Jones, R., Kokkonen, E., Eads, C., Küst, U. K., Prumbs, J., Knudsen, J. & Schnadt, J., 2025, In: Surface Science. 753, 122656.

Research output: Contribution to journal › Article › peer-review

Open Access

2024

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

Küst, U., Wang, W., Wang, C., Hagelin-Weaver, H., Gustafson, J., Shavorskiy, A., Weaver, J. F. & Knudsen, J., 2024 Apr 19, In: ACS Catalysis. 14, 8, p. 5978-5986 9 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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

van Efferen, C., Hall, J., Atodiresei, N., Boix, V., Safeer, A., Wekking, T., Vinogradov, N. A., Preobrajenski, A. B., Knudsen, J., Fischer, J., Jolie, W. & Michely, T., 2024, In: ACS Nano. 18, 22, p. 14161-14175 15 p.

Research output: Contribution to journal › Article › peer-review

Open Access

Engineering 2D Materials from Single-Layer NbS₂

Knispel, T., Mohrenstecher, D., Speckmann, C., Safeer, A., van Efferen, C., Boix, V., Grüneis, A., Jolie, W., Preobrajenski, A., Knudsen, J., Atodiresei, N., Michely, T. & Fischer, J., 2024, (Accepted/In press) In: Small.

Research output: Contribution to journal › Article › peer-review

Open Access

2023

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

Svenum, I. H., Strømsheim, M. D., Knudsen, J. & Venvik, H. J., 2023 Jan, In: Journal of Catalysis. 417, p. 194-201 8 p.

Research output: Contribution to journal › Article › peer-review

Open Access

2022

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

Boix, V., Xu, W., D'Acunto, G., Stubbe, J., Gallo, T., Døvre Strømsheim, M., Zhu, S., Scardamaglia, M., Shavorskiy, A., Reuter, K., Andersen, M. & Knudsen, J., 2022 Aug 25, In: Journal of Physical Chemistry C. 126, 33, p. 14116-14124 9 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Boix, V., Scardamaglia, M., Gallo, T., D'Acunto, G., Strømsheim, M. D., Cavalca, F., Zhu, S., Shavorskiy, A., Schnadt, J. & Knudsen, J., 2022 Aug 19, In: ACS Catalysis. 12, 16, p. 9897-9907 11 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Wallander, H. J., Oropeza, F. E., Hagman, B., Knudsen, J., Lundgren, E. & Merte, L. R., 2022 Apr, In: Journal of Physical Chemistry C. 126, 14, p. 6258-6266 9 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Grånäs, E., Schröder, U. A., Arman, M. A., Andersen, M., Gerber, T., Schulte, K., Andersen, J. N., Michely, T., Hammer, B. & Knudsen, J., 2022 Mar 10, In: Journal of Physical Chemistry C. 126, 9, p. 4347-4354 8 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Strømsheim, M. D., Svenum, I. H., Mahmoodinia, M., Boix, V., Knudsen, J. & Venvik, H. J., 2022, In: Catalysis Today. 384-386, 0, p. 265-273

Research output: Contribution to journal › Article › peer-review

Open Access

2021

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

Knudsen, J., Gallo, T., Boix, V., Strømsheim, M. D., D’Acunto, G., Goodwin, C., Wallander, H., Zhu, S., Soldemo, M., Lömker, P., Cavalca, F., Scardamaglia, M., Degerman, D., Nilsson, A., Amann, P., Shavorskiy, A. & Schnadt, J., 2021 Dec, In: Nature Communications. 12, 1, 6117.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Hartl, T., Will, M., Bampoulis, P., Herrmann, D., Valerius, P., Herbig, C., Boix de la Cruz, V., Lacovig, P., Vonk, V., Chung, S., Stierle, A., Lizzit, S., Knudsen, J. & Michely, T., 2021 Oct 28, In: Journal of Physical Chemistry C. 125, 42, p. 23435-23444 10 p.

Research output: Contribution to journal › Article › peer-review

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

Shavorskiy, A., D'Acunto, G., Boix De La Cruz, V., Scardamaglia, M., Zhu, S., Temperton, R. H., Schnadt, J. & Knudsen, J., 2021 Sept, In: ACS Applied Materials and Interfaces. 13, 40, p. 47629–47641 13 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Boix, V., Struzzi, C., Gallo, T., Johansson, N., D'acunto, G., Yong, Z., Zakharov, A., Li, Z., Schnadt, J., Mikkelsen, A. & Knudsen, J., 2021 Aug 1, In: Applied Surface Science. 557, p. 149806

Research output: Contribution to journal › Article › peer-review

Open Access

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

Will, M., Hartl, T., De La Cruz, V. B., Lacovig, P., Lizzit, S., Knudsen, J., Michely, T. & Bampoulis, P., 2021 Feb, In: Journal of Physical Chemistry C. 125, 7, p. 3880-3889 10 p.

Research output: Contribution to journal › Article › peer-review

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

Scardamaglia, M., Boix, V., D'Acunto, G., Struzzi, C., Reckinger, N., Chen, X., Shivayogimath, A., Booth, T. & Knudsen, J., 2021, In: Carbon. 171, p. 610-617 8 p.

Research output: Contribution to journal › Article › peer-review

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

Zhu, S., Scardamaglia, M., Kundsen, J., Sankari, R., Tarawneh, H., Temperton, R., Pickworth, L., Cavalca, F., Wang, C., Tissot, H., Weissenrieder, J., Hagman, B., Gustafson, J., Kaya, S., Lindgren, F., Källquist, I., Maibach, J., Hahlin, M., Boix, V. & Gallo, T. & 4 others, Rehman, F., D'Acunto, G., Schnadt, J. & Shavorskiy, A., 2021, In: Journal of Synchrotron Radiation. 28, p. 624-636 13 p.

Research output: Contribution to journal › Article › peer-review

Open Access

Upgrade of the SPECIES beamline at the MAX IV Laboratory

Kokkonen, E., Lopes da Silva, F., Mikkelã, M. H., Johansson, N., Huang, S. W., Lee, J. M., Andersson, M., Bartalesi, A., Reinecke, B. N., Handrup, K., Tarawneh, H., Sankari, R., Knudsen, J., Schnadt, J., Såthe, C. & Urpelainen, S., 2021, In: Journal of Synchrotron Radiation. 28, p. 588-601 14 p.

Research output: Contribution to journal › Article › peer-review

Open Access

2020

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

Agåker, M., Mueller, F., Norsk Jensen, B., Åhnberg, K., Sjöblom, P., Deiwiks, J., Henniger, H., Pärna, R., Knudsen, J., Thiagarajan, B. & Såthe, C., 2020 Mar 1, In: Journal of Synchrotron Radiation. 27, Pt 2, p. 262-271 10 p.

Research output: Contribution to journal › Article › peer-review

Open Access

Cluster Superlattice Membranes

Hartl, T., Will, M., Čapeta, D., Singh, R., Scheinecker, D., Boix de la Cruz, V., Dellmann, S., Lacovig, P., Lizzit, S., Senkovskiy, B. V., Grüneis, A., Kralj, M., Knudsen, J., Kotakoski, J., Michely, T. & Bampoulis, P., 2020, In: ACS Nano. 14, 10, p. 13629-13637 9 p.

Research output: Contribution to journal › Article › peer-review

2018

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

Timm, R., Head, A. R., Yngman, S., Knutsson, J. V., Hjort, M., McKibbin, S. R., Troian, A., Persson, O., Urpelainen, S., Knudsen, J., Schnadt, J. & Mikkelsen, A., 2018 Dec 1, In: Nature Communications. 9, 1, 1412.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Rameshan, C., Li, H., Anic, K., Roiaz, M., Pramhaas, V., Rameshan, R., Blume, R., Hävecker, M., Knudsen, J., Knop-Gericke, A. & Rupprechter, G., 2018 Jun 8, In: Journal of Physics: Condensed Matter. 30, 26, 264007.

Research output: Contribution to journal › Article › peer-review

Open Access

Adsorption of CO on the Fe₃O₄(001) Surface

Hulva, J., Jakub, Z., Novotny, Z., Johansson, N., Knudsen, J., Schnadt, J., Schmid, M., Diebold, U. & Parkinson, G. S., 2018 Jan 18, In: Journal of Physical Chemistry B. 122, 2, p. 721-729 9 p.

Research output: Contribution to journal › Article › peer-review

2017

Exciting H2 Molecules for Graphene Functionalization

Kyhl, L., Bisson, R., Balog, R., Groves, M. N., Kolsbjerg, E. L., Cassidy, A. M., Jœrgensen, J. H., Halkjær, S., Miwa, J. A., Čabo, A. G., Angot, T., Hofmann, P., Arman, A., Urpelainen, S., Lacovig, P., Bignardi, L., Bluhm, H., Knudsen, J., Hammer, B. & Hornekaer, L., 2017 Dec 18, In: ACS Nano.

Research output: Contribution to journal › Article › peer-review

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

Valerius, P., Herbig, C., Will, M., Arman, M. A., Knudsen, J., Caciuc, V., Atodiresei, N. & Michely, T., 2017 Dec 8, In: Physical Review B. 96, 23, 235410.

Research output: Contribution to journal › Article › peer-review

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

Strømsheim, M. D., Knudsen, J., Farstad, M. H., Sørvik, L., Guo, X., Venvik, H. J. & Borg, A., 2017 Nov, In: Topics in Catalysis. 60, 17-18, p. 1439-1448

Research output: Contribution to journal › Article › peer-review

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

Johansson, N., Andersen, M., Monya, Y., Andersen, J. N., Kondoh, H., Schnadt, J. & Knudsen, J., 2017 Oct 5, In: Journal of Physics: Condensed Matter. 29, 44, 444002.

Research output: Contribution to journal › Article › peer-review

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

Johansson, N., Sisodiya, S., Shayesteh, P., Chaudhary, S., Andersen, J. N., Knudsen, J., Wendt, O. & Schnadt, J., 2017 Oct 5, In: Journal of Physics: Condensed Matter. 29, 44, 444005.

Research output: Contribution to journal › Article › peer-review

Open Access

Preventing sintering of nanoclusters on graphene by radical adsorption

Martínez-Galera, A. J., Schröder, U. A., Herbig, C., Arman, M. A., Knudsen, J. & Michely, T., 2017 Sept 28, In: Nanoscale. 9, 36, p. 13618-13629 12 p.

Research output: Contribution to journal › Article › peer-review

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

Herbig, C., Knispel, T., Simon, S., Schröder, U. A., Martínez-Galera, A. J., Arman, M. A., Teichert, C., Knudsen, J., Krasheninnikov, A. V. & Michely, T., 2017 May 10, In: Nano Letters. 17, 5, p. 3105-3112 8 p.

Research output: Contribution to journal › Article › peer-review

Core level shifts of intercalated graphene

Schröder, U. A., Petrović, M., Gerber, T., Martínez-Galera, A. J., Grånäs, E., Arman, M. A., Herbig, C., Schnadt, J., Kralj, M., Knudsen, J. & Michely, T., 2017 Mar 1, In: 2D Materials. 4, 1, 015013.

Research output: Contribution to journal › Article › peer-review

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

Urpelainen, S., Schnadt, J., Knudsen, J., Hennies, F., Såthe, C., Arman, A., Andersen, J. N., Johansson, N., Merte, L., Andersson, M., Sankari, R., Nyholm, R., GRIZOLLI, W., Lindberg, M., Sjöblom, P., Tarawneh, H., Jensen, B. N., Agåker, M., Head, A. & Wallén, E. & 3 others, Reinecke, B., Huang, S.-W. & Kvistholm, J. (Illustrator), 2017 Jan 1, In: Journal of Synchrotron Radiation. 24, 1, p. 344-353 10 p.

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Open Access

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

Arman, A., Klein, A., Ferstl, P., Valookaran, A., Gustafson, J., Schulte, K., Lundgren, E., Heinz, K., Schneider, A., Mittendorfer, F., Hammer, L. & Knudsen, J., 2017, In: Surface Science. 656, p. 66-76 10 p.

Research output: Contribution to journal › Article

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

Arman, A., Merte, L., Lundgren, E. & Knudsen, J., 2017, In: Surface Science. 657, p. 90-95 6 p.

Research output: Contribution to journal › Article › peer-review

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

Soldemo, M., Stenlid, J. H., Besharat, Z., Johansson, N., Önsten, A., Knudsen, J., Schnadt, J., Göthelid, M., Brinck, T. & Weissenrieder, J., 2017, In: Journal of Physical Chemistry C. 121, 43, p. 24011–24024

Research output: Contribution to journal › Article › peer-review

2016

Symmetry-Driven Band Gap Engineering in Hydrogen Functionalized Graphene

Jørgensen, J. H., Čabo, A. G., Balog, R., Kyhl, L., Groves, M. N., Cassidy, A. M., Bruix, A., Bianchi, M., Dendzik, M., Arman, M. A., Lammich, L., Pascual, J. I., Knudsen, J., Hammer, B., Hofmann, P. & Hornekaer, L., 2016 Dec 27, In: ACS Nano. 10, 12, p. 10798-10807 10 p.

Research output: Contribution to journal › Article › peer-review

Hydrogen intercalation under graphene on Ir(111)

Grånäs, E., Gerber, T., Schröder, U. A., Schulte, K., Andersen, J. N., Michely, T. & Knudsen, J., 2016 Sept 1, In: Surface Science. 651, p. 57-61 5 p.

Research output: Contribution to journal › Article › peer-review

Reversed Hysteresis during CO Oxidation over Pd₇₅Ag₂₅(100)

Fernandes, V. R., Bossche, M. V. D., Knudsen, J., Farstad, M. H., Gustafson, J., Venvik, H. J., Grönbeck, H. & Borg, A., 2016 Jul 1, In: ACS Catalysis. 6, 7, p. 4154-4161 8 p.

Research output: Contribution to journal › Article › peer-review

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

Knudsen, J., Andersen, J. N. & Schnadt, J., 2016 Apr 1, In: Surface Science. 646, p. 160-169 10 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Snezhkova, O., Bischoff, F., He, Y., Wiengarten, A., Chaudhary, S., Johansson, N., Schulte, K., Knudsen, J., Barth, J. V., Seufert, K., Auwärter, W. & Schnadt, J., 2016, In: Journal of Chemical Physics. 144, 9, 094702.

Research output: Contribution to journal › Article › peer-review

2015

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

Nierhoff, A., Conradsen, C., McCarthy, D., Johansson, T. P., Knudsen, J. & Chorkendorff, I., 2015, In: Catalysis Today. 244, p. 130-135

Research output: Contribution to journal › Article › peer-review

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

Ferstl, P., Mehl, S., Arman, M. A., Schuler, M., Toghan, A., Laszlo, B., Lykhach, Y., Brummel, O., Lundgren, E., Knudsen, J., Hammer, L., Schneider, M. A. & Libuda, J., 2015, In: Journal of Physical Chemistry C. 119, 29, p. 16688-16699

Research output: Contribution to journal › Article › peer-review

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

Jensen, T. N., Rasmussen, M. K., Knudsen, J., Vlad, A., Volkov, S., Lundgren, E., Stierle, A. & Lauritsen, J. V., 2015, In: Physical Chemistry Chemical Physics. 17, 8, p. 5795-5804

Research output: Contribution to journal › Article › peer-review

Jan Knudsen

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