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Chen H, Falling LJ, Kersell H, Yan G, Zhao X, Oliver-Meseguer J, Jaugstetter M, Nemsak S, Hunt A, Waluyo I, Ogasawara H, Bell AT, Sautet P, Salmeron M. Elucidating the active phases of CoO x films on Au(111) in the CO oxidation reaction. Nat Commun 2023; 14:6889. [PMID: 37898599 PMCID: PMC10613203 DOI: 10.1038/s41467-023-42301-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 10/06/2023] [Indexed: 10/30/2023] Open
Abstract
Noble metals supported on reducible oxides, like CoOx and TiOx, exhibit superior activity in many chemical reactions, but the origin of the increased activity is not well understood. To answer this question we studied thin films of CoOx supported on an Au(111) single crystal surface as a model for the CO oxidation reaction. We show that three reaction regimes exist in response to chemical and topographic restructuring of the CoOx catalyst as a function of reactant gas phase CO/O2 stoichiometry and temperature. Under oxygen-lean conditions and moderate temperatures (≤150 °C), partially oxidized films (CoOx<1) containing Co0 were found to be efficient catalysts. In contrast, stoichiometric CoO films containing only Co2+ form carbonates in the presence of CO that poison the reaction below 300 °C. Under oxygen-rich conditions a more oxidized catalyst phase (CoOx>1) forms containing Co3+ species that are effective in a wide temperature range. Resonant photoemission spectroscopy (ResPES) revealed the unique role of Co3+ sites in catalyzing the CO oxidation. Density function theory (DFT) calculations provided deeper insights into the pathway and free energy barriers for the reactions on these oxide phases. These findings in this work highlight the versatility of catalysts and their evolution to form different active phases, both topological and chemically, in response to reaction conditions exposing a new paradigm in the catalyst structure during operation.
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Affiliation(s)
- Hao Chen
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Lorenz J Falling
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Heath Kersell
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | - George Yan
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Xiao Zhao
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA
| | - Judit Oliver-Meseguer
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Max Jaugstetter
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Slavomir Nemsak
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Physics and Astronomy, University of California, Davis, CA, 95616, USA
| | - Adrian Hunt
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Iradwikanari Waluyo
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Alexis T Bell
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA
| | - Philippe Sautet
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Miquel Salmeron
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
- Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
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Procter TD, Ogasawara H, Spruin S, Wijayasri S, Abraham N, Blaser C, Hutchings K, Shaw A, Ogunnaike-Cooke S. Thrombosis with thrombocytopenia syndrome (TTS) following adenovirus vector COVID-19 vaccination in Canada. Vaccine 2023:S0264-410X(23)01159-3. [PMID: 37806804 DOI: 10.1016/j.vaccine.2023.09.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 09/01/2023] [Accepted: 09/29/2023] [Indexed: 10/10/2023]
Abstract
INTRODUCTION Identifying and monitoring adverse events following vaccination contributed to the safety and effectiveness of COVID-19 mass vaccination campaigns. In March 2021, international reports emerged of an adverse event following vaccination with adenovirus vector COVID-19 vaccines (ChAdOx1-S [recombinant] and Ad26.COV2.S) of thrombosis with low platelet counts, referred to as thrombosis with thrombocytopenia syndrome (TTS). We described TTS reports in Canada following adenovirus vector COVID-19 vaccines and investigated whether the observed number of events were higher than expected. METHODS Reports of TTS following receipt of ChAdOx1-S [recombinant] or Ad26.COV2.S meeting the Canadian case definition for TTS and diagnostic certainty levels 1-3 of the Brighton Collaboration case definition, submitted to the Canadian Adverse Events Following Immunization Surveillance System and Canada Vigilance Database between February 26, 2021 and October 31, 2022 were included. Demographics and characteristics of the TTS reports are described along with an analysis comparing the observed number of reports to the expected number. RESULTS As of October 31, 2022, 56 reports of TTS following administration of ChAdOx1-S [recombinant] and no reports following Ad26.COV2.S vaccines were reported in Canada, of which 37 had functionally positive anti-PF4 antibodies. The median age was 56 years; males accounted for 54 % of reports. Five deaths were reported. The observed number of reports exceeded the expected for all ages and sexes combined, as well as for males aged 30-49 and 60-69 years, and females aged 40-59 years. CONCLUSION Based on international surveillance data, Canada evaluated a statistical signal of TTS following adenovirus vector vaccines. The investigation of this signal demonstrated how post-market vaccine safety surveillance systems were successful in investigating rare adverse events during the rollout of COVID-19 vaccines in Canada. As adenovirus vector vaccines continue to be administered, characterization of the association between the vaccine and TTS informs immunization programs and policies.
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Affiliation(s)
- T D Procter
- Centre for Immunization Surveillance, Public Health Agency of Canada, Ottawa, ON, Canada.
| | - H Ogasawara
- Centre for Immunization Surveillance, Public Health Agency of Canada, Ottawa, ON, Canada
| | - S Spruin
- Centre for Immunization Surveillance, Public Health Agency of Canada, Ottawa, ON, Canada
| | - S Wijayasri
- Centre for Immunization Surveillance, Public Health Agency of Canada, Ottawa, ON, Canada
| | - N Abraham
- Centre for Immunization Surveillance, Public Health Agency of Canada, Ottawa, ON, Canada
| | - C Blaser
- Centre for Immunization Surveillance, Public Health Agency of Canada, Ottawa, ON, Canada
| | - K Hutchings
- Centre for Immunization Surveillance, Public Health Agency of Canada, Ottawa, ON, Canada
| | - A Shaw
- Centre for Immunization Surveillance, Public Health Agency of Canada, Ottawa, ON, Canada
| | - S Ogunnaike-Cooke
- Centre for Immunization Surveillance, Public Health Agency of Canada, Ottawa, ON, Canada
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Schreck S, Diesen E, Dell'Angela M, Liu C, Weston M, Capotondi F, Ogasawara H, LaRue J, Costantini R, Beye M, Miedema PS, Halldin Stenlid J, Gladh J, Liu B, Wang HY, Perakis F, Cavalca F, Koroidov S, Amann P, Pedersoli E, Naumenko D, Nikolov I, Raimondi L, Abild-Pedersen F, Heinz TF, Voss J, Luntz AC, Nilsson A. Atom-Specific Probing of Electron Dynamics in an Atomic Adsorbate by Time-Resolved X-Ray Spectroscopy. Phys Rev Lett 2022; 129:276001. [PMID: 36638285 DOI: 10.1103/physrevlett.129.276001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 06/14/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
The electronic excitation occurring on adsorbates at ultrafast timescales from optical lasers that initiate surface chemical reactions is still an open question. Here, we report the ultrafast temporal evolution of x-ray absorption spectroscopy (XAS) and x-ray emission spectroscopy (XES) of a simple well-known adsorbate prototype system, namely carbon (C) atoms adsorbed on a nickel [Ni(100)] surface, following intense laser optical pumping at 400 nm. We observe ultrafast (∼100 fs) changes in both XAS and XES showing clear signatures of the formation of a hot electron-hole pair distribution on the adsorbate. This is followed by slower changes on a few picoseconds timescale, shown to be consistent with thermalization of the complete C/Ni system. Density functional theory spectrum simulations support this interpretation.
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Affiliation(s)
- Simon Schreck
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Elias Diesen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | | | - Chang Liu
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Matthew Weston
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Flavio Capotondi
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Jerry LaRue
- Schmid College of Science and Technology, Chapman University, Orange, California 92866, USA
| | - Roberto Costantini
- CNR-IOM, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
- Physics Department, University of Trieste, Via Valerio 2, 34127 Trieste, Italy
| | - Martin Beye
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Piter S Miedema
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Joakim Halldin Stenlid
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Jörgen Gladh
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Boyang Liu
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Hsin-Yi Wang
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Fivos Perakis
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Filippo Cavalca
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Sergey Koroidov
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Peter Amann
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Emanuele Pedersoli
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Denys Naumenko
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Ivaylo Nikolov
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Lorenzo Raimondi
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Frank Abild-Pedersen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Tony F Heinz
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - Johannes Voss
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Alan C Luntz
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
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Singh SK, Takeyasu K, Homma K, Ito S, Morinaga T, Endo Y, Furukawa M, Mori T, Ogasawara H, Nakamura J. Activating Nitrogen-doped Graphene Oxygen Reduction Electrocatalysts in Acidic Electrolytes using Hydrophobic Cavities and Proton-conductive Particles. Angew Chem Int Ed Engl 2022; 61:e202212506. [PMID: 36240783 DOI: 10.1002/anie.202212506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Indexed: 11/06/2022]
Abstract
Although pyridinic-nitrogen (pyri-N) doped graphene is highly active for the oxygen reduction reaction (ORR) of fuel cells in alkaline media, the activity critically decreases under acidic conditions. We report on how to prevent the deactivation based on the mechanistic understanding that O 2 + p y r i - N H + + e - → O 2 , a + p y r i - N H ${{{\rm O}}_{2}+{\rm p}{\rm y}{\rm r}{\rm i}{\rm { -}}{\rm N}{{\rm H}}^{+}+{{\rm e}}^{-}{\to }_{\ }^{{\rm \ }}{{\rm O}}_{2,{\rm a}}+{\rm p}{\rm y}{\rm r}{\rm i}{\rm { -}}{\rm N}{\rm H}}$ governs the ORR kinetics. First, we considered that the deactivation is due to the hydration of pyri-NH+ , leading to a lower shift of the redox potential. Introducing the hydrophobic cavity prevented the hydration of pyri-NH+ but inhibited the proton transport. We then increased proton conductivity in the hydrophobic cavity by introducing SiO2 particles coated with ionic liquid polymer/Nafion® which kept the high onset potentials with an increased current density even in acidic media.
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Affiliation(s)
- Santosh K Singh
- Graduate School of Science and Technology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan.,Department of Chemistry, School of Natural Sciences, Shiv Nadar University Delhi-NCR, Greater Noida, Uttar Pradesh, 201314, India
| | - Kotaro Takeyasu
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan.,Tsukuba Research Centre for Energy and Materials Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan.,R&D Center for Zero CO2 Emission with Functional Materials, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - Kaito Homma
- Graduate School of Science and Technology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - Shigeharu Ito
- Department of Creative Engineering, National Institute of Technology (KOSEN), Tsuruoka College, 104 Sawada, Inooka, Tsuruoka, Yamagata 997-8511, Japan
| | - Takashi Morinaga
- Department of Creative Engineering, National Institute of Technology (KOSEN), Tsuruoka College, 104 Sawada, Inooka, Tsuruoka, Yamagata 997-8511, Japan
| | - Yuto Endo
- Graduate School of Science and Technology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - Moeko Furukawa
- Graduate School of Science and Technology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - Toshiyuki Mori
- Center for Green Research on Energy and Environmental Materials, National Institute for Materials Sciences (NIMS) 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Junji Nakamura
- Faculty of Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan.,Tsukuba Research Centre for Energy and Materials Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan.,Mitsui Chemicals, Inc.-Carbon Neutral Research Center (MCI-CNRC), International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka-shi, Fukuoka, 819-0395, Japan
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5
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Singh SK, Takeyasu K, Homma K, Ito S, Morinaga T, Endo Y, Furukawa M, Mori T, Ogasawara H, Nakamura J. Activating Nitrogen‐doped Graphene Oxygen Reduction Electrocatalysts in Acidic Electrolytes using Hydrophobic Cavities and Proton‐conductive Particles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Santosh K. Singh
- University of Tsukuba: Tsukuba Daigaku Graduate School of Science and Technology JAPAN
| | - Kotaro Takeyasu
- University of Tsukuba Faculty of Pure and Applied Sciences 1-1-1 Tennodai 3058573 Tsukuba JAPAN
| | - Kaito Homma
- University of Tsukuba: Tsukuba Daigaku Graduate School of Science and Technology JAPAN
| | - Shigeharu Ito
- National Institute of Technology Tsuruoka College: Tsuruoka Kogyo Koto Senmon Gakko Department of Creative Engineering JAPAN
| | - Takashi Morinaga
- National Institute of Technology Tsuruoka College: Tsuruoka Kogyo Koto Senmon Gakko Department of Creative Engineering JAPAN
| | - Yuto Endo
- University of Tsukuba: Tsukuba Daigaku Graduate School of Science and Technology 1-1-1 Tennodai 3058573 Tsukuba JAPAN
| | - Moeko Furukawa
- University of Tsukuba: Tsukuba Daigaku Graduate School of Science and Technology JAPAN
| | - Toshiyuki Mori
- National Institute for Materials Science: Busshitsu Zairyo Kenkyu Kiko Center for Green Research on Energy and Environmental Materials JAPAN
| | | | - Junji Nakamura
- Kyushu University: Kyushu Daigaku International Institute for Carbon Neutral Energy Research JAPAN
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LaRue J, Liu B, Rodrigues GLS, Liu C, Garrido Torres JA, Schreck S, Diesen E, Weston M, Ogasawara H, Perakis F, Dell'Angela M, Capotondi F, Ball D, Carnahan C, Zeri G, Giannessi L, Pedersoli E, Naumenko D, Amann P, Nikolov I, Raimondi L, Spezzani C, Beye M, Voss J, Wang HY, Cavalca F, Gladh J, Koroidov S, Abild-Pedersen F, Kolb M, Miedema PS, Costantini R, Heinz T, Luntz A, Pettersson LG, Nilsson A. Symmetry-resolved CO desorption and oxidation dynamics on O/Ru(0001) probed at the C K-edge by ultrafast X-ray spectroscopy. J Chem Phys 2022; 157:164705. [DOI: 10.1063/5.0114399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report on carbon monoxide desorption and oxidation induced by 400 nm femtosecond laser excitation on the O/Ru(0001) surface probed by time-resolved X-ray absorption spectroscopy (TR-XAS) at the carbon K-edge. The experiments were performed under constant background pressures of CO (6x10-8 Torr) and O2 (3x10-8 Torr). Under these conditions, we detect two transient CO species with narrow 2π* peaks, suggesting little 2π* interaction with the surface. Based on polarization measurements, we find that these two species have opposing orientations: (1) CO favoring a more perpendicular orientation and (2) CO favoring a more parallel orientation with respect to the surface. We also directly detect gas-phase CO2 using a mass spectrometer and observe weak signatures of bent adsorbed CO2 at slightly higher X-ray energies than the 2π* region. These results are compared to previously reported TR-XAS results at the O K-edge where the CO background pressure was three times lower (2x10-8 Torr) while maintaining the same O2 pressure. At the lower CO pressure, in the CO 2π* region, we observed adsorbed CO and a distribution of OC-O bond lengths close to the CO oxidation transition state, with little indication of gas-like CO. The shift towards 'gas-like' CO species may be explained by the higher CO exposure, which blocks O adsorption, decreasing O coverage and increasing CO coverage. These effects decrease the CO desorption barrier through dipole-dipole interaction, while simultaneously increasing the CO oxidation barrier.
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Affiliation(s)
- Jerry LaRue
- Chemistry and Biochemistry, Chapman University, United States of America
| | - Boyang Liu
- Stockholm University Department of Physics, Sweden
| | | | - Chang Liu
- Stockholm University Department of Physics, Sweden
| | | | | | - Elias Diesen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, United States of America
| | | | | | | | | | | | - Devon Ball
- Chapman University Schmid College of Science and Technology, United States of America
| | - Conner Carnahan
- Chapman University Schmid College of Science and Technology, United States of America
| | - Gary Zeri
- Chapman University Schmid College of Science and Technology, United States of America
| | | | | | | | - Peter Amann
- Stockholm University Department of Physics, Sweden
| | | | | | | | | | - Johannes Voss
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, United States of America
| | - Hsin-Yi Wang
- Stockholm University Department of Physics, Sweden
| | | | - Jörgen Gladh
- Chemical Physics, Stockholm University Department of Physics, Sweden
| | | | | | | | | | | | - Tony Heinz
- Stanford University, United States of America
| | - Alan Luntz
- SUNCAT, SLAC National Accelerator Laboratory, United States of America
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7
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Higley DJ, Ogasawara H, Zohar S, Dakovski GL. Using photoelectron spectroscopy to measure resonant inelastic X-ray scattering: a computational investigation. J Synchrotron Radiat 2022; 29:202-213. [PMID: 34985437 PMCID: PMC8733969 DOI: 10.1107/s1600577521011917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 11/10/2021] [Indexed: 06/14/2023]
Abstract
Resonant inelastic X-ray scattering (RIXS) has become an important scientific tool. Nonetheless, conventional high-resolution (few hundred meV or less) RIXS measurements, especially in the soft X-ray range, require low-throughput grating spectrometers, which limits measurement accuracy. Here, the performance of a different method for measuring RIXS, i.e. photoelectron spectrometry for analysis of X-rays (PAX), is computationally investigated. This method transforms the X-ray measurement problem of RIXS to an electron measurement problem, enabling use of high-throughput, compact electron spectrometers. X-rays to be measured are incident on a converter material and the energy distribution of the resultant photoelectrons, the PAX spectrum, is measured with an electron spectrometer. A deconvolution algorithm for analysis of such PAX data is proposed. It is shown that the deconvolution algorithm works well on data recorded with ∼0.5 eV resolution. Additional simulations show the potential of PAX for estimation of RIXS features with smaller widths. For simulations using the 3d levels of Ag as a converter material, and with 105 simulated detected electrons, it is estimated that features with a few hundred meV width can be accurately estimated in a model RIXS spectrum. For simulations using a sharp Fermi edge to encode RIXS spectra, it is estimated that one can accurately distinguish 100 meV FWHM peaks separated by 45 meV with 105 simulated detected electrons that were photoemitted from within 0.4 eV of the Fermi level.
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Affiliation(s)
- Daniel J. Higley
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Sioan Zohar
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Georgi L. Dakovski
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
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8
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Li D, Yoshida S, Siritanaratkul B, Garcia-Esparza AT, Sokaras D, Ogasawara H, Takanabe K. Transient Potassium Peroxide Species in Highly Selective Oxidative Coupling of Methane over an Unmolten K 2WO 4/SiO 2 Catalyst Revealed by In Situ Characterization. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04206] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Duanxing Li
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Shintaro Yoshida
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Bhavin Siritanaratkul
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Angel T. Garcia-Esparza
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025, United States
| | - Dimosthenis Sokaras
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025, United States
| | - Hirohito Ogasawara
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025, United States
| | - Kazuhiro Takanabe
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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9
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Diesen E, Wang HY, Schreck S, Weston M, Ogasawara H, LaRue J, Perakis F, Dell'Angela M, Capotondi F, Giannessi L, Pedersoli E, Naumenko D, Nikolov I, Raimondi L, Spezzani C, Beye M, Cavalca F, Liu B, Gladh J, Koroidov S, Miedema PS, Costantini R, Heinz TF, Abild-Pedersen F, Voss J, Luntz AC, Nilsson A. Ultrafast Adsorbate Excitation Probed with Subpicosecond-Resolution X-Ray Absorption Spectroscopy. Phys Rev Lett 2021; 127:016802. [PMID: 34270277 DOI: 10.1103/physrevlett.127.016802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 05/07/2021] [Indexed: 06/13/2023]
Abstract
We use a pump-probe scheme to measure the time evolution of the C K-edge x-ray absorption spectrum from CO/Ru(0001) after excitation by an ultrashort high-intensity optical laser pulse. Because of the short duration of the x-ray probe pulse and precise control of the pulse delay, the excitation-induced dynamics during the first picosecond after the pump can be resolved with unprecedented time resolution. By comparing with density functional theory spectrum calculations, we find high excitation of the internal stretch and frustrated rotation modes occurring within 200 fs of laser excitation, as well as thermalization of the system in the picosecond regime. The ∼100 fs initial excitation of these CO vibrational modes is not readily rationalized by traditional theories of nonadiabatic coupling of adsorbates to metal surfaces, e.g., electronic frictions based on first order electron-phonon coupling or transient population of adsorbate resonances. We suggest that coupling of the adsorbate to nonthermalized electron-hole pairs is responsible for the ultrafast initial excitation of the modes.
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Affiliation(s)
- Elias Diesen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Hsin-Yi Wang
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Simon Schreck
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Matthew Weston
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Jerry LaRue
- Schmid College of Science and Technology, Chapman University, Orange, California 92866, USA
| | - Fivos Perakis
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | | | - Flavio Capotondi
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Luca Giannessi
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Emanuele Pedersoli
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Denys Naumenko
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Ivaylo Nikolov
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Lorenzo Raimondi
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Carlo Spezzani
- FERMI, Elettra-Sincrotrone Trieste, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
| | - Martin Beye
- DESY Photon Science, Notkestrasse 85, Hamburg 22607, Germany
| | - Filippo Cavalca
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Boyang Liu
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Jörgen Gladh
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Sergey Koroidov
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Piter S Miedema
- DESY Photon Science, Notkestrasse 85, Hamburg 22607, Germany
| | - Roberto Costantini
- CNR-IOM, SS 14-km 163.5, 34149 Basovizza, Trieste, Italy
- Physics Department, University of Trieste, Via Valerio 2, 34127 Trieste, Italy
| | - Tony F Heinz
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - Frank Abild-Pedersen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Johannes Voss
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Alan C Luntz
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
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10
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Barzgar Vishlaghi M, Kahraman A, Apaydin S, Usman E, Aksoy D, Balkan T, Munir S, Harfouche M, Ogasawara H, Kaya S. The significance of the local structure of cobalt-based catalysts on the photoelectrochemical water oxidation activity of BiVO4. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137467] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Kahraman A, Vishlaghi MB, Baylam I, Ogasawara H, Sennaroğlu A, Kaya S. The Fast-Track Water Oxidation Channel on BiVO 4 Opened by Nitrogen Treatment. J Phys Chem Lett 2020; 11:8758-8764. [PMID: 32921048 DOI: 10.1021/acs.jpclett.0c02190] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
BiVO4 is one of the most promising photoanode materials for water-splitting systems. Nitrogen incorporation into a BiVO4 surface overcomes the known bottleneck in its charge-transfer kinetics into the electrolyte. We explored the role of nitrogen in the surface charge recombination and charge-transfer kinetics by employing transient photocurrent spectroscopy at the time scale of surface recombination and water oxidation kinetics, transient absorption spectroscopy, and X-ray photoelectron spectroscopy. We attributed the activity enhancement mechanism to the accelerated V5+/V4+ redox process, in which incorporated nitrogen suppresses a limiting surface recombination channel by increasing the oxygen vacancies.
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Affiliation(s)
- Abdullah Kahraman
- Materials Science and Engineering, Koç University, Istanbul 34450, Turkey
- Koç University Tüpraş Energy Center (KUTEM), Istanbul 34450, Turkey
- Koç University Surface Science and Technology Center (KUYTAM), Istanbul 34450, Turkey
| | - Mahsa Barzgar Vishlaghi
- Materials Science and Engineering, Koç University, Istanbul 34450, Turkey
- Koç University Tüpraş Energy Center (KUTEM), Istanbul 34450, Turkey
- Koç University Surface Science and Technology Center (KUYTAM), Istanbul 34450, Turkey
| | - Işınsu Baylam
- Koç University Surface Science and Technology Center (KUYTAM), Istanbul 34450, Turkey
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, Menlo Park 94025, California, United States
| | - Alphan Sennaroğlu
- Materials Science and Engineering, Koç University, Istanbul 34450, Turkey
- Koç University Tüpraş Energy Center (KUTEM), Istanbul 34450, Turkey
- Koç University Surface Science and Technology Center (KUYTAM), Istanbul 34450, Turkey
- Departments of Physics and Electrical-Electronics Engineering, Koç University, Istanbul 34450, Turkey
| | - Sarp Kaya
- Materials Science and Engineering, Koç University, Istanbul 34450, Turkey
- Koç University Tüpraş Energy Center (KUTEM), Istanbul 34450, Turkey
- Koç University Surface Science and Technology Center (KUYTAM), Istanbul 34450, Turkey
- Department of Chemistry, Koç University, Istanbul 34450, Turkey
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12
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Kim KH, Späh A, Pathak H, Yang C, Bonetti S, Amann-Winkel K, Mariedahl D, Schlesinger D, Sellberg JA, Mendez D, van der Schot G, Hwang HY, Clark J, Shigeki O, Tadashi T, Harada Y, Ogasawara H, Katayama T, Nilsson A, Perakis F. Anisotropic X-Ray Scattering of Transiently Oriented Water. Phys Rev Lett 2020; 125:076002. [PMID: 32857536 DOI: 10.1103/physrevlett.125.076002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
We study the structural dynamics of liquid water by time-resolved anisotropic x-ray scattering under the optical Kerr effect condition. In this way, we can separate the anisotropic scattering decay of 160 fs from the delayed temperature increase of ∼0.1 K occurring at 1 ps and quantify transient changes in the O-O pair distribution function. Polarizable molecular dynamics simulations reproduce well the experiment, indicating transient alignment of molecules along the electric field, which shortens the nearest-neighbor distances. In addition, analysis of the simulated water local structure provides evidence that two hypothesized fluctuating water configurations exhibit different polarizability.
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Affiliation(s)
- Kyung Hwan Kim
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
- Department of Chemistry, POSTECH, Pohang 37673, Republic of Korea
| | - Alexander Späh
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Harshad Pathak
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Cheolhee Yang
- Department of Chemistry, POSTECH, Pohang 37673, Republic of Korea
| | - Stefano Bonetti
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, 30172 Venice-Mestre, Italy
| | - Katrin Amann-Winkel
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Daniel Mariedahl
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Daniel Schlesinger
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
- Department of Environmental Science and Bolin Centre for Climate Research, Stockholm University, 114 18 Stockholm, Sweden
| | - Jonas A Sellberg
- Biomedical and X-Ray Physics, Department of Applied Physics, AlbaNova University Center, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Derek Mendez
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Gijs van der Schot
- Department of Cell and Molecular Biology, Laboratory of Molecular Biophysics, Uppsala University, SE-75124 Uppsala, Sweden
| | - Harold Y Hwang
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Jesse Clark
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Owada Shigeki
- Japan Synchrotron Radiation Research Institute, Kouto 1-1-1, Sayo, Hyogo 679-5198, Japan
| | - Togashi Tadashi
- Japan Synchrotron Radiation Research Institute, Kouto 1-1-1, Sayo, Hyogo 679-5198, Japan
| | - Yoshihisa Harada
- Institute for Solid State Physics, The University of Tokyo, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
| | | | - Tetsuo Katayama
- Japan Synchrotron Radiation Research Institute, Kouto 1-1-1, Sayo, Hyogo 679-5198, Japan
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Fivos Perakis
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
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13
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Wang HY, Schreck S, Weston M, Liu C, Ogasawara H, LaRue J, Perakis F, Dell'Angela M, Capotondi F, Giannessi L, Pedersoli E, Naumenko D, Nikolov I, Raimondi L, Spezzani C, Beye M, Cavalca F, Liu B, Gladh J, Koroidov S, Miedema PS, Costantini R, Pettersson LGM, Nilsson A. Time-resolved observation of transient precursor state of CO on Ru(0001) using carbon K-edge spectroscopy. Phys Chem Chem Phys 2020; 22:2677-2684. [PMID: 31531435 DOI: 10.1039/c9cp03677f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The transient dynamics of carbon monoxide (CO) molecules on a Ru(0001) surface following femtosecond optical laser pump excitation has been studied by monitoring changes in the unoccupied electronic structure using an ultrafast X-ray free-electron laser (FEL) probe. The particular symmetry of perpendicularly chemisorbed CO on the surface is exploited to investigate how the molecular orientation changes with time by varying the polarization of the FEL pulses. The time evolution of spectral features corresponding to the desorption precursor state was well distinguished due to the narrow line-width of the C K-edge in the X-ray absorption (XA) spectrum, illustrating that CO molecules in the precursor state rotated freely and resided on the surface for several picoseconds. Most of the CO molecules trapped in the precursor state ultimately cooled back down to the chemisorbed state, while we estimate that ∼14.5 ± 4.9% of the molecules in the precursor state desorbed into the gas phase. It was also observed that chemisorbed CO molecules diffused over the metal surface from on-top sites toward highly coordinated sites. In addition, a new "vibrationally hot precursor" state was identified in the polarization-dependent XA spectra.
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Affiliation(s)
- Hsin-Yi Wang
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
| | - Simon Schreck
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
| | - Matthew Weston
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
| | - Chang Liu
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Jerry LaRue
- Schmid College of Science and Technology, Chapman University, Orange, California 92866, USA
| | - Fivos Perakis
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
| | | | - Flavio Capotondi
- FERMI, Elettra-Sincrotrone Trieste, SS 14 - km 163.5, 34149 Basovizza, Trieste, Italy
| | - Luca Giannessi
- FERMI, Elettra-Sincrotrone Trieste, SS 14 - km 163.5, 34149 Basovizza, Trieste, Italy
| | - Emanuele Pedersoli
- FERMI, Elettra-Sincrotrone Trieste, SS 14 - km 163.5, 34149 Basovizza, Trieste, Italy
| | - Denys Naumenko
- FERMI, Elettra-Sincrotrone Trieste, SS 14 - km 163.5, 34149 Basovizza, Trieste, Italy
| | - Ivaylo Nikolov
- FERMI, Elettra-Sincrotrone Trieste, SS 14 - km 163.5, 34149 Basovizza, Trieste, Italy
| | - Lorenzo Raimondi
- FERMI, Elettra-Sincrotrone Trieste, SS 14 - km 163.5, 34149 Basovizza, Trieste, Italy
| | - Carlo Spezzani
- FERMI, Elettra-Sincrotrone Trieste, SS 14 - km 163.5, 34149 Basovizza, Trieste, Italy
| | - Martin Beye
- DESY Photon Science, Notkestrasse 85, Hamburg 22607, Germany
| | - Filippo Cavalca
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
| | - Boyang Liu
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
| | - Jörgen Gladh
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
| | - Sergey Koroidov
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
| | - Piter S Miedema
- DESY Photon Science, Notkestrasse 85, Hamburg 22607, Germany
| | - Roberto Costantini
- CNR-IOM, SS 14 - km 163.5, 34149 Basovizza, Trieste, Italy and Physics Department, University of Trieste, Via Valerio 2, 34127 Trieste, Italy
| | - Lars G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
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14
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Lee SJ, Titus CJ, Alonso Mori R, Baker ML, Bennett DA, Cho HM, Doriese WB, Fowler JW, Gaffney KJ, Gallo A, Gard JD, Hilton GC, Jang H, Joe YI, Kenney CJ, Knight J, Kroll T, Lee JS, Li D, Lu D, Marks R, Minitti MP, Morgan KM, Ogasawara H, O'Neil GC, Reintsema CD, Schmidt DR, Sokaras D, Ullom JN, Weng TC, Williams C, Young BA, Swetz DS, Irwin KD, Nordlund D. Soft X-ray spectroscopy with transition-edge sensors at Stanford Synchrotron Radiation Lightsource beamline 10-1. Rev Sci Instrum 2019; 90:113101. [PMID: 31779391 DOI: 10.1063/1.5119155] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 10/17/2019] [Indexed: 06/10/2023]
Abstract
We present results obtained with a new soft X-ray spectrometer based on transition-edge sensors (TESs) composed of Mo/Cu bilayers coupled to bismuth absorbers. This spectrometer simultaneously provides excellent energy resolution, high detection efficiency, and broadband spectral coverage. The new spectrometer is optimized for incident X-ray energies below 2 keV. Each pixel serves as both a highly sensitive calorimeter and an X-ray absorber with near unity quantum efficiency. We have commissioned this 240-pixel TES spectrometer at the Stanford Synchrotron Radiation Lightsource beamline 10-1 (BL 10-1) and used it to probe the local electronic structure of sample materials with unprecedented sensitivity in the soft X-ray regime. As mounted, the TES spectrometer has a maximum detection solid angle of 2 × 10-3 sr. The energy resolution of all pixels combined is 1.5 eV full width at half maximum at 500 eV. We describe the performance of the TES spectrometer in terms of its energy resolution and count-rate capability and demonstrate its utility as a high throughput detector for synchrotron-based X-ray spectroscopy. Results from initial X-ray emission spectroscopy and resonant inelastic X-ray scattering experiments obtained with the spectrometer are presented.
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Affiliation(s)
- Sang-Jun Lee
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | | | | | | | - Douglas A Bennett
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Hsiao-Mei Cho
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - William B Doriese
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Joseph W Fowler
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Kelly J Gaffney
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Alessandro Gallo
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Johnathon D Gard
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Gene C Hilton
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Hoyoung Jang
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Young Il Joe
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | | | - Jason Knight
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Thomas Kroll
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Jun-Sik Lee
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Dale Li
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Donghui Lu
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Ronald Marks
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Michael P Minitti
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Kelsey M Morgan
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | | | - Galen C O'Neil
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Carl D Reintsema
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Daniel R Schmidt
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | | | - Joel N Ullom
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Tsu-Chien Weng
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | | | - Betty A Young
- Santa Clara University, Santa Clara, California 95053, USA
| | - Daniel S Swetz
- National Institute of Standards and Technology, Boulder, Colorado 80305, USA
| | - Kent D Irwin
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Dennis Nordlund
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
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15
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Hasegawa M, Luong V, Utsunomiya A, Chino T, Oyama N, Matsushita T, Obara T, Kuboi Y, Ishii N, Machinaga A, Ogasawara H, Ikeda W, Imai T. LB1141 Anti-mouse CX3CL1 monoclonal antibody therapy in mouse models of systemic sclerosis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.06.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Diulus JT, Frederick RT, Li M, Hutchison DC, Olsen MR, Lyubinetsky I, Árnadóttir L, Garfunkel EL, Nyman M, Ogasawara H, Herman GS. Ambient-Pressure X-ray Photoelectron Spectroscopy Characterization of Radiation-Induced Chemistries of Organotin Clusters. ACS Appl Mater Interfaces 2019; 11:2526-2534. [PMID: 30575394 DOI: 10.1021/acsami.8b19302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Advances in extreme ultraviolet (EUV) photolithography require the development of next-generation resists that allow high-volume nanomanufacturing with a single nanometer patterning resolution. Organotin-based photoresists have demonstrated nanopatterning with high resolution, high sensitivity, and low-line edge roughness. However, very little is known regarding the detailed reaction mechanisms that lead to radiation-induced solubility transitions. In this study, we investigate the interaction of soft X-ray radiation with organotin clusters to better understand radiation-induced chemistries associated with EUV lithography. Butyltin Keggin clusters (β-NaSn13) were used as a model organotin photoresist, and characterization was performed using ambient-pressure X-ray photoelectron spectroscopy. The changes in relative atomic concentrations and associated chemical states in β-NaSn13 resists were evaluated after exposure to radiation for a range of ambient conditions and photon energies. A significant reduction in the C 1s signal versus exposure time was observed, which corresponds to the radiation-induced homolytic cleavage of the butyltin bond in the β-NaSn13 clusters. To improve the resist sensitivity, we evaluated the effect of oxygen partial pressure during radiation exposures. We found that both photon energy and oxygen partial pressure had a strong influence on the butyl group desorption rate. These studies advance the understanding of radiation-induced processes in β-NaSn13 photoresists and provide mechanistic insights for EUV photolithography.
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Affiliation(s)
| | | | - Mengjun Li
- Department of Chemistry and Chemical Biology , Rutgers University , Piscataway , New Jersey 08854 , United States
| | | | | | | | | | - Eric L Garfunkel
- Department of Chemistry and Chemical Biology , Rutgers University , Piscataway , New Jersey 08854 , United States
| | | | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory , Menlo Park , California 94025 , United States
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17
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Schreck S, Diesen E, LaRue J, Ogasawara H, Marks K, Nordlund D, Weston M, Beye M, Cavalca F, Perakis F, Sellberg J, Eilert A, Kim KH, Coslovich G, Coffee R, Krzywinski J, Reid A, Moeller S, Lutman A, Öström H, Pettersson LGM, Nilsson A. Atom-specific activation in CO oxidation. J Chem Phys 2018; 149:234707. [PMID: 30579301 DOI: 10.1063/1.5044579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
We report on atom-specific activation of CO oxidation on Ru(0001) via resonant X-ray excitation. We show that resonant 1s core-level excitation of atomically adsorbed oxygen in the co-adsorbed phase of CO and oxygen directly drives CO oxidation. We separate this direct resonant channel from indirectly driven oxidation via X-ray induced substrate heating. Based on density functional theory calculations, we identify the valence-excited state created by the Auger decay as the driving electronic state for direct CO oxidation. We utilized the fresh-slice multi-pulse mode at the Linac Coherent Light Source that provided time-overlapped and 30 fs delayed pairs of soft X-ray pulses and discuss the prospects of femtosecond X-ray pump X-ray spectroscopy probe, as well as X-ray two-pulse correlation measurements for fundamental investigations of chemical reactions via selective X-ray excitation.
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Affiliation(s)
- Simon Schreck
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
| | - Elias Diesen
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
| | - Jerry LaRue
- Schmid College of Science and Technology, Chapman University, Orange, California 92866, USA
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Kess Marks
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
| | - Dennis Nordlund
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Matthew Weston
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
| | - Martin Beye
- DESY Photon Science, Notkestrasse 85, Hamburg 22607, Germany
| | - Filippo Cavalca
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
| | - Fivos Perakis
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
| | - Jonas Sellberg
- Biomedical and X-ray Physics, Department of Applied Physics, AlbaNova University Center, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - André Eilert
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
| | - Kyung Hwan Kim
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
| | - Giacomo Coslovich
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Ryan Coffee
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Jacek Krzywinski
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Alex Reid
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Stefan Moeller
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Alberto Lutman
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Henrik Öström
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
| | - Lars G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, Stockholm SE-10691, Sweden
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18
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Muroya S, Ogasawara H, Nohara K, Oe M, Ojima K, Hojito M. PSVII-25 Grazing-induced transcriptomic changes in bovine biceps femoris muscle, subcutaneous fat, and liver mRNAs and plasma exosome microRNAs. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Muroya
- Institute of Livestock and Grassland Science, NARO, Tsukuba, Ibaraki, Japan
| | | | - K Nohara
- Kitasato University,Hokkaido, Japan
| | - M Oe
- Institute of Livestock and Grassland Science, NARO, Tsukuba, Ibaraki, Japan
| | - K Ojima
- Institute of Livestock and Grassland Science, NARO, Tsukuba, Ibaraki, Japan
| | - M Hojito
- Kitasato University,Hokkaido, Japan
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19
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Perakis F, Camisasca G, Lane TJ, Späh A, Wikfeldt KT, Sellberg JA, Lehmkühler F, Pathak H, Kim KH, Amann-Winkel K, Schreck S, Song S, Sato T, Sikorski M, Eilert A, McQueen T, Ogasawara H, Nordlund D, Roseker W, Koralek J, Nelson S, Hart P, Alonso-Mori R, Feng Y, Zhu D, Robert A, Grübel G, Pettersson LGM, Nilsson A. Coherent X-rays reveal the influence of cage effects on ultrafast water dynamics. Nat Commun 2018; 9:1917. [PMID: 29765052 PMCID: PMC5953967 DOI: 10.1038/s41467-018-04330-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 04/19/2018] [Indexed: 11/13/2022] Open
Abstract
The dynamics of liquid water feature a variety of time scales, ranging from extremely fast ballistic-like thermal motion, to slower molecular diffusion and hydrogen-bond rearrangements. Here, we utilize coherent X-ray pulses to investigate the sub-100 fs equilibrium dynamics of water from ambient conditions down to supercooled temperatures. This novel approach utilizes the inherent capability of X-ray speckle visibility spectroscopy to measure equilibrium intermolecular dynamics with lengthscale selectivity, by measuring oxygen motion in momentum space. The observed decay of the speckle contrast at the first diffraction peak, which reflects tetrahedral coordination, is attributed to motion on a molecular scale within the first 120 fs. Through comparison with molecular dynamics simulations, we conclude that the slowing down upon cooling from 328 K down to 253 K is not due to simple thermal ballistic-like motion, but that cage effects play an important role even on timescales over 25 fs due to hydrogen-bonding.
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Affiliation(s)
- Fivos Perakis
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91, Stockholm, Sweden.
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA.
| | - Gaia Camisasca
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91, Stockholm, Sweden
| | - Thomas J Lane
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Alexander Späh
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91, Stockholm, Sweden
| | - Kjartan Thor Wikfeldt
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91, Stockholm, Sweden
| | - Jonas A Sellberg
- Biomedical and X-ray Physics, Department of Applied Physics, AlbaNova University Center, KTH Royal Institute of Technology, S-10691, Stockholm, Sweden
| | - Felix Lehmkühler
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
- Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Harshad Pathak
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91, Stockholm, Sweden
| | - Kyung Hwan Kim
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91, Stockholm, Sweden
| | - Katrin Amann-Winkel
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91, Stockholm, Sweden
| | - Simon Schreck
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91, Stockholm, Sweden
| | - Sanghoon Song
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Takahiro Sato
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Marcin Sikorski
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Andre Eilert
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Trevor McQueen
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Dennis Nordlund
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Wojciech Roseker
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Jake Koralek
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Silke Nelson
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Philip Hart
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Roberto Alonso-Mori
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Yiping Feng
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Diling Zhu
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Aymeric Robert
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, CA, 94025, USA
| | - Gerhard Grübel
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
- Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Lars G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91, Stockholm, Sweden
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91, Stockholm, Sweden.
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20
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Tatemoto K, Nozaki Y, Tsuda R, Kaneko S, Tomura K, Furuno M, Ogasawara H, Edamura K, Takagi H, Iwamura H, Noguchi M, Naito T. Endogenous protein and enzyme fragments induce immunoglobulin E-independent activation of mast cells via a G protein-coupled receptor, MRGPRX2. Scand J Immunol 2018; 87:e12655. [PMID: 29484687 DOI: 10.1111/sji.12655] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 02/20/2018] [Indexed: 12/31/2022]
Abstract
Mast cells play a central role in inflammatory and allergic reactions by releasing inflammatory mediators through 2 main pathways, immunoglobulin E-dependent and E-independent activation. In the latter pathway, mast cells are activated by a diverse range of basic molecules (collectively known as basic secretagogues) through Mas-related G protein-coupled receptors (MRGPRs). In addition to the known basic secretagogues, here, we discovered several endogenous protein and enzyme fragments (such as chaperonin-10 fragment) that act as bioactive peptides and induce immunoglobulin E-independent mast cell activation via MRGPRX2 (previously known as MrgX2), leading to the degranulation of mast cells. We discuss the possibility that MRGPRX2 responds various as-yet-unidentified endogenous ligands that have specific characteristics, and propose that MRGPRX2 plays an important role in regulating inflammatory responses to endogenous harmful stimuli, such as protein breakdown products released from damaged or dying cells.
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Affiliation(s)
- K Tatemoto
- Department of Molecular Physiology, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
| | - Y Nozaki
- Pharmaceutical Frontier Research Laboratories, Japan Tobacco Inc., Yokohama, Japan
| | - R Tsuda
- Department of Molecular Physiology, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
| | - S Kaneko
- Department of Molecular Physiology, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
| | - K Tomura
- Pharmaceutical Frontier Research Laboratories, Japan Tobacco Inc., Yokohama, Japan
| | - M Furuno
- Pharmaceutical Frontier Research Laboratories, Japan Tobacco Inc., Yokohama, Japan
| | - H Ogasawara
- Pharmaceutical Frontier Research Laboratories, Japan Tobacco Inc., Yokohama, Japan
| | - K Edamura
- Pharmaceutical Frontier Research Laboratories, Japan Tobacco Inc., Yokohama, Japan
| | - H Takagi
- Pharmaceutical Frontier Research Laboratories, Japan Tobacco Inc., Yokohama, Japan
| | - H Iwamura
- Pharmaceutical Frontier Research Laboratories, Japan Tobacco Inc., Yokohama, Japan
| | - M Noguchi
- Pharmaceutical Frontier Research Laboratories, Japan Tobacco Inc., Yokohama, Japan
| | - T Naito
- Pharmaceutical Frontier Research Laboratories, Japan Tobacco Inc., Yokohama, Japan
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21
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Ohno K, Manjanath A, Kawazoe Y, Hatakeyama R, Misaizu F, Kwon E, Fukumura H, Ogasawara H, Yamada Y, Zhang C, Sumi N, Kamigaki T, Kawachi K, Yokoo K, Ono S, Kasama Y. Extensive first-principles molecular dynamics study on Li encapsulation into C 60 and its experimental confirmation. Nanoscale 2018; 10:1825-1836. [PMID: 29308793 DOI: 10.1039/c7nr07237f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of increasing the production ratio of endohedral C60 by impinging foreign atoms against C60 is a crucial matter of the science and technology employed towards industrialization of these functional building block materials. Among these endohedral fullerenes, Li+@C60 exhibits a wide variety of physical and chemical phenomena and has the potential to be applicable in areas spanning the medical field to photovoltaics. However, currently, Li+@C60 can be experimentally produced with only ∼1% ratio using the plasma shower method with a 30 eV kinetic energy provided to the impinging Li+ ion. From extensive first-principles molecular dynamics simulations, it is found that the maximum production ratio of Li+@C60 per hit is increased to about 5.1% (5.3%) when a Li+ ion impinges vertically on a six-membered ring of C60 with 30 eV (40 eV) kinetic energy, although many C60 molecules are damaged during this collision. On the contrary, when it impinges vertically on a six-membered ring with 10 eV kinetic energy, the production ratio remains at 1.3%, but the C60 molecules are not damaged at all. On the other hand, when the C60 is randomly oriented, the production ratio reduces to about 3.7 ± 0.5%, 3.3 ± 0.5%, and 0.2 ± 0.03% for 30 eV, 40 eV, and 10 eV kinetic energy, respectively. Based on these observations we demonstrate the possibility of increasing the production ratio by fixing six-membered rings atop C60 using the Cu(111) substrate or UV light irradiation. In order to assess the ideal experimental production ratio, the 7Li solid NMR spectroscopy measurement is also performed for the multilayer randomly oriented C60 sample irradiated by Li+ using the plasma shower method combined with inductively coupled plasma atomic emission spectroscopy (ICP-AES). Time-of-flight mass spectroscopy measurements are also performed to cross check whether Li+@C60 molecules are produced in the sample. The resulting experimental estimate, 4% for 30 eV incident kinetic energy, fully agrees with our simulation results mentioned above, suggesting the consistency and accuracy of our simulations and experiments.
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Affiliation(s)
- K Ohno
- Department of Physics, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan.
| | - A Manjanath
- Department of Physics, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan.
| | - Y Kawazoe
- New Industry Creation Hatchery Center, Tohoku University, 6-6-4 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan and Department of Physics and Nanotechnology, SRM University, Kattankulathur 603203, Tamil Nadu, India
| | - R Hatakeyama
- Department of Electronic Engineering, Tohoku University, 6-6-5 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - F Misaizu
- New Industry Creation Hatchery Center, Tohoku University, 6-6-4 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan and Department of Chemistry, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - E Kwon
- New Industry Creation Hatchery Center, Tohoku University, 6-6-4 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan and Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - H Fukumura
- Department of Chemistry, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - H Ogasawara
- Graduate School of Pharmaceutical Science, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Y Yamada
- Division of Applied Physics, University of Tsukuba, 1-1-1 Ten'nodai, Tsukuba, Ibaraki 305-8573, Japan
| | - C Zhang
- Division of Applied Physics, University of Tsukuba, 1-1-1 Ten'nodai, Tsukuba, Ibaraki 305-8573, Japan
| | - N Sumi
- Division of Applied Physics, University of Tsukuba, 1-1-1 Ten'nodai, Tsukuba, Ibaraki 305-8573, Japan
| | - T Kamigaki
- Idea International Corporation, 1-15-35 Sagigamori, Aoba-ku, Sendai 981-0922, Japan
| | - K Kawachi
- Idea International Corporation, 1-15-35 Sagigamori, Aoba-ku, Sendai 981-0922, Japan
| | - K Yokoo
- Idea International Corporation, 1-15-35 Sagigamori, Aoba-ku, Sendai 981-0922, Japan
| | - S Ono
- Idea International Corporation, 1-15-35 Sagigamori, Aoba-ku, Sendai 981-0922, Japan
| | - Y Kasama
- Idea International Corporation, 1-15-35 Sagigamori, Aoba-ku, Sendai 981-0922, Japan
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22
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Dakovski GL, Lin MF, Damiani DS, Schlotter WF, Turner JJ, Nordlund D, Ogasawara H. A novel method for resonant inelastic soft X-ray scattering via photoelectron spectroscopy detection. J Synchrotron Radiat 2017; 24:1180-1186. [PMID: 29091061 DOI: 10.1107/s1600577517011869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 08/15/2017] [Indexed: 06/07/2023]
Abstract
A method for measuring resonant inelastic X-ray scattering based on the conversion of X-ray photons into photoelectrons is presented. The setup is compact, relies on commercially available detectors, and offers significant flexibility. This method is demonstrated at the Linac Coherent Light Source with ∼0.5 eV resolution at the cobalt L3-edge, with signal rates comparable with traditional grating spectrometers.
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Affiliation(s)
- Georgi L Dakovski
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Ming Fu Lin
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Daniel S Damiani
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - William F Schlotter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Joshua J Turner
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Dennis Nordlund
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Hirohito Ogasawara
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
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23
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Kim KH, Pathak H, Späh A, Perakis F, Mariedahl D, Sellberg JA, Katayama T, Harada Y, Ogasawara H, Pettersson LGM, Nilsson A. Temperature-Independent Nuclear Quantum Effects on the Structure of Water. Phys Rev Lett 2017; 119:075502. [PMID: 28949651 DOI: 10.1103/physrevlett.119.075502] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Indexed: 06/07/2023]
Abstract
Nuclear quantum effects (NQEs) have a significant influence on the hydrogen bonds in water and aqueous solutions and have thus been the topic of extensive studies. However, the microscopic origin and the corresponding temperature dependence of NQEs have been elusive and still remain the subject of ongoing discussion. Previous x-ray scattering investigations indicate that NQEs on the structure of water exhibit significant temperature dependence [Phys. Rev. Lett. 94, 047801 (2005)PRLTAO0031-900710.1103/PhysRevLett.94.047801]. Here, by performing wide-angle x-ray scattering of H_{2}O and D_{2}O droplets at temperatures from 275 K down to 240 K, we determine the temperature dependence of NQEs on the structure of water down to the deeply supercooled regime. The data reveal that the magnitude of NQEs on the structure of water is temperature independent, as the structure factor of D_{2}O is similar to H_{2}O if the temperature is shifted by a constant 5 K, valid from ambient conditions to the deeply supercooled regime. Analysis of the accelerated growth of tetrahedral structures in supercooled H_{2}O and D_{2}O also shows similar behavior with a clear 5 K shift. The results indicate a constant compensation between NQEs delocalizing the proton in the librational motion away from the bond and in the OH stretch vibrational modes along the bond. This is consistent with the fact that only the vibrational ground state is populated at ambient and supercooled conditions.
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Affiliation(s)
- Kyung Hwan Kim
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Harshad Pathak
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Alexander Späh
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Fivos Perakis
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Daniel Mariedahl
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Jonas A Sellberg
- Biomedical and X-Ray Physics, Department of Applied Physics, AlbaNova University Center, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Tetsuo Katayama
- Japan Synchrotron Radiation Research Institute, Kouto 1-1-1, Sayo, Hyogo 679-5198, Japan
| | - Yoshihisa Harada
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Lars G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
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24
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LaRue J, Krejčí O, Yu L, Beye M, Ng ML, Öberg H, Xin H, Mercurio G, Moeller S, Turner JJ, Nordlund D, Coffee R, Minitti MP, Wurth W, Pettersson LGM, Öström H, Nilsson A, Abild-Pedersen F, Ogasawara H. Real-Time Elucidation of Catalytic Pathways in CO Hydrogenation on Ru. J Phys Chem Lett 2017; 8:3820-3825. [PMID: 28759996 DOI: 10.1021/acs.jpclett.7b01549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The direct elucidation of the reaction pathways in heterogeneous catalysis has been challenging due to the short-lived nature of reaction intermediates. Here, we directly measured on ultrafast time scales the initial hydrogenation steps of adsorbed CO on a Ru catalyst surface, which is known as the bottleneck reaction in syngas and CO2 reforming processes. We initiated the hydrogenation of CO with an ultrafast laser temperature jump and probed transient changes in the electronic structure using real-time X-ray spectroscopy. In combination with theoretical simulations, we verified the formation of CHO during CO hydrogenation.
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Affiliation(s)
- J LaRue
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
- Department of Physics, AlbaNova University Center, Stockholm University , SE-10691 Stockholm, Sweden
- Schmid College of Science and Technology, Chapman University , One University Drive, Orange, California 92866, United States
- Fritz-Haber Institute of the Max-Planck-Society , Faradayweg 4-6, D-14195 Berlin, Germany
| | - O Krejčí
- Department of Physics, AlbaNova University Center, Stockholm University , SE-10691 Stockholm, Sweden
- Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University in Prague , V Holešovičkách 2, 180 00, Prague, Czech Republic
- Institute of Physics of the Czech Academy of Sciences , Cukrovarnická 10, 162 53, Prague, Czech Republic
| | - L Yu
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University , Stanford, California 95305, United States
| | - M Beye
- Helmholtz Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, D-12489 Berlin, Germany
| | - M L Ng
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - H Öberg
- Department of Physics, AlbaNova University Center, Stockholm University , SE-10691 Stockholm, Sweden
| | - H Xin
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University , Stanford, California 95305, United States
| | - G Mercurio
- University of Hamburg and Center for Free Electron Laser Science , Luruper Chausse 149, D-22761 Hamburg, Germany
| | - S Moeller
- Linac Coherent Light Source, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - J J Turner
- Linac Coherent Light Source, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - D Nordlund
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - R Coffee
- Linac Coherent Light Source, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - M P Minitti
- Linac Coherent Light Source, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - W Wurth
- University of Hamburg and Center for Free Electron Laser Science , Luruper Chausse 149, D-22761 Hamburg, Germany
- DESY Photon Science , Notkestrasse 85, 22607 Hamburg, Germany
| | - L G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University , SE-10691 Stockholm, Sweden
| | - H Öström
- Department of Physics, AlbaNova University Center, Stockholm University , SE-10691 Stockholm, Sweden
| | - A Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University , SE-10691 Stockholm, Sweden
| | - F Abild-Pedersen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - H Ogasawara
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
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25
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Nilsson A, LaRue J, Öberg H, Ogasawara H, Dell'Angela M, Beye M, Öström H, Gladh J, Nørskov J, Wurth W, Abild-Pedersen F, Pettersson L. Catalysis in real time using X-ray lasers. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.02.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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Eilert A, Cavalca F, Roberts FS, Osterwalder J, Liu C, Favaro M, Crumlin EJ, Ogasawara H, Friebel D, Pettersson LGM, Nilsson A. Subsurface Oxygen in Oxide-Derived Copper Electrocatalysts for Carbon Dioxide Reduction. J Phys Chem Lett 2017; 8:285-290. [PMID: 27983864 DOI: 10.1021/acs.jpclett.6b02273] [Citation(s) in RCA: 201] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Copper electrocatalysts derived from an oxide have shown extraordinary electrochemical properties for the carbon dioxide reduction reaction (CO2RR). Using in situ ambient pressure X-ray photoelectron spectroscopy and quasi in situ electron energy-loss spectroscopy in a transmission electron microscope, we show that there is a substantial amount of residual oxygen in nanostructured, oxide-derived copper electrocatalysts but no residual copper oxide. On the basis of these findings in combination with density functional theory simulations, we propose that residual subsurface oxygen changes the electronic structure of the catalyst and creates sites with higher carbon monoxide binding energy. If such sites are stable under the strongly reducing conditions found in CO2RR, these findings would explain the high efficiencies of oxide-derived copper in reducing carbon dioxide to multicarbon compounds such as ethylene.
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Affiliation(s)
- André Eilert
- SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University , 443 Via Ortega, Stanford, California 95305, United States
- Department of Physics, AlbaNova University Center, Stockholm University , S-10691 Stockholm, Sweden
| | - Filippo Cavalca
- SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University , 443 Via Ortega, Stanford, California 95305, United States
- Department of Physics, AlbaNova University Center, Stockholm University , S-10691 Stockholm, Sweden
| | - F Sloan Roberts
- SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University , 443 Via Ortega, Stanford, California 95305, United States
- Department of Physics, AlbaNova University Center, Stockholm University , S-10691 Stockholm, Sweden
| | - Jürg Osterwalder
- Department of Physics, University of Zürich , Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - Chang Liu
- Department of Physics, AlbaNova University Center, Stockholm University , S-10691 Stockholm, Sweden
| | - Marco Favaro
- Advanced Light Source, Lawrence Berkeley National Laboratory , 6 Cyclotron Road, Berkeley, California 94720, United States
- Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Ethan J Crumlin
- Advanced Light Source, Lawrence Berkeley National Laboratory , 6 Cyclotron Road, Berkeley, California 94720, United States
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - Daniel Friebel
- SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - Lars G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University , S-10691 Stockholm, Sweden
| | - Anders Nilsson
- SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University , 443 Via Ortega, Stanford, California 95305, United States
- Department of Physics, AlbaNova University Center, Stockholm University , S-10691 Stockholm, Sweden
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27
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Abstract
The incompressible pyrite form of group 14 elemental pernitrides synthesized at high pressures and high temperatures.
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Affiliation(s)
- K. Niwa
- Department of Materials Physics
- Nagoya University
- Nagoya
- Japan
| | - H. Ogasawara
- Department of Crystalline Materials Science
- Nagoya University
- Nagoya
- Japan
| | - M. Hasegawa
- Department of Materials Physics
- Nagoya University
- Nagoya
- Japan
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28
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Hayasaka M, Ogasawara H, Hotta Y, Tsukagoshi K, Kimura O, Kura T, Tarumi T, Muramatsu H, Endo T. Nutritional assessment using stable isotope ratios of carbon and nitrogen in the scalp hair of geriatric patients who received enteral and parenteral nutrition formulas. Clin Nutr 2016; 36:1661-1668. [PMID: 27847116 DOI: 10.1016/j.clnu.2016.10.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 10/14/2016] [Accepted: 10/17/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND & AIMS The δ13C and δ15N values in the scalp hair of geriatric patients in Japan who received the enteral or parenteral nutrition formula were measured to assess nutritional status. METHODS The relations among δ13C, δ15N, calorie intake, BMI, albumin concentration, total cholesterol (T-CHO) and geriatric nutritional risk index (GNRI) in the patients were investigated. Furthermore, the enrichment of δ13C and δ15N from the nutrients to the hair was investigated. RESULTS The δ13C values in the hair of patients who received enteral nutrition decreased with decreases in the calories received, while the δ15N values increased, suggesting malnutrition in some patients with a low calorie intake due to a negative nitrogen balance. The distribution of patients with a low calorie intake (below 20 kcal/kg/day) when δ13C was plotted against δ15N differed from that of control subjects, but the distribution of patients with a high calorie intake (above 20 kcal/kg/day) was similar to that of control subjects. No significant differences were observed in BMI, albumin concentration, T-CHO or GNRI between the low and high calorie groups. The enrichment of δ13C and δ15N from the enteral nutrients to the hair were inversely correlated with the δ13C and δ15N in the enteral nutrients. The enrichment levels of δ13C and δ15N tended to be higher and lower, respectively, in the high calorie group. On the other hand, the δ13C and δ15N values in the hair of patients who received parenteral nutrition were higher and lower than those in the control subjects and in the patients who received enteral nutrition, respectively, reflecting the higher δ13C and lower δ15N contents of the parenteral nutrients. CONCLUSIONS The δ13C and δ15N values in the hair of patients who received enteral nutrition may be effective indicators for evaluating the long-term nutritional status of geriatric patients. A calorie intake of 20 kcal/kg/day may be a cut-off value for malnutrition in Japanese geriatric patients receiving enteral nutrition. However, caution is necessary when dealing with patients switching from parental nutrition as parenteral nutrition resulted in different changes in δ13C and δ15N. The enrichment levels of δ13C and δ15N from the enteral nutrients to the hair may be inversely correlated with the δ13C and δ15N values of enteral nutrients and vary according to the calorie intake.
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Affiliation(s)
- M Hayasaka
- Sapporo Higashi-Tokushukai Hospital, N33-E14, Higashi-ku, Sapporo, Hokkaido 065-0033, Japan
| | - H Ogasawara
- Sapporo Minami-Seishu Hospital, 1-2-20, Satozuka, Kiyota-Ku, Sapporo, Hokkaido 004-0801, Japan
| | - Y Hotta
- Hokusei Hospital, W3-2-10, Sinkawa, Kita-Ku, Sapporo, Hokkaido 001-0933, Japan
| | - K Tsukagoshi
- Hijirigaoka Hospital, 214-22, Funaoka, Date, Hokkaido 052-0014, Japan
| | - O Kimura
- School of Pharmaceutical Science, Health Sciences University of Hokkaido, 1757 Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan
| | - T Kura
- Naganuma Municipal Hospital, 2-2-1 Chuo, Naganuma, Yubari, Hokkaido 069-1332, Japan
| | - T Tarumi
- Hokusei Hospital, W3-2-10, Sinkawa, Kita-Ku, Sapporo, Hokkaido 001-0933, Japan
| | - H Muramatsu
- Rumoi City Hospital, 2-16 Shinonome, Rumoi, Hokkaido 077-8511, Japan
| | - T Endo
- School of Pharmaceutical Science, Health Sciences University of Hokkaido, 1757 Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan.
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29
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Beye M, Öberg H, Xin H, Dakovski GL, Dell'Angela M, Föhlisch A, Gladh J, Hantschmann M, Hieke F, Kaya S, Kühn D, LaRue J, Mercurio G, Minitti MP, Mitra A, Moeller SP, Ng ML, Nilsson A, Nordlund D, Nørskov J, Öström H, Ogasawara H, Persson M, Schlotter WF, Sellberg JA, Wolf M, Abild-Pedersen F, Pettersson LGM, Wurth W. Chemical Bond Activation Observed with an X-ray Laser. J Phys Chem Lett 2016; 7:3647-3651. [PMID: 27584914 DOI: 10.1021/acs.jpclett.6b01543] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The concept of bonding and antibonding orbitals is fundamental in chemistry. The population of those orbitals and the energetic difference between the two reflect the strength of the bonding interaction. Weakening the bond is expected to reduce this energetic splitting, but the transient character of bond-activation has so far prohibited direct experimental access. Here we apply time-resolved soft X-ray spectroscopy at a free-electron laser to directly observe the decreased bonding-antibonding splitting following bond-activation using an ultrashort optical laser pulse.
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Affiliation(s)
- Martin Beye
- Institute for Methods and Instrumentation in Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , 12489 Berlin, Germany
- SSRL, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
- DESY Photon Science , 22607 Hamburg, Germany
| | - Henrik Öberg
- Department of Physics, Stockholm University , 10691 Stockholm, Sweden
| | - Hongliang Xin
- SUNCAT, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Georgi L Dakovski
- LCLS, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Martina Dell'Angela
- Physik Department, Universität Hamburg and Center for Free-Electron Laser Science , 22761 Hamburg, Germany
| | - Alexander Föhlisch
- Institute for Methods and Instrumentation in Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , 12489 Berlin, Germany
- Institut für Physik und Astronomie, Universität Potsdam , 14476 Potsdam, Germany
| | - Jörgen Gladh
- Department of Physics, Stockholm University , 10691 Stockholm, Sweden
| | - Markus Hantschmann
- Institute for Methods and Instrumentation in Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , 12489 Berlin, Germany
| | - Florian Hieke
- Physik Department, Universität Hamburg and Center for Free-Electron Laser Science , 22761 Hamburg, Germany
| | - Sarp Kaya
- SUNCAT, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Danilo Kühn
- Institute for Methods and Instrumentation in Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , 12489 Berlin, Germany
| | - Jerry LaRue
- SUNCAT, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
- Chapman University , Orange, California 92866, United States
| | - Giuseppe Mercurio
- Physik Department, Universität Hamburg and Center for Free-Electron Laser Science , 22761 Hamburg, Germany
| | - Michael P Minitti
- LCLS, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Ankush Mitra
- LCLS, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Stefan P Moeller
- LCLS, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - May Ling Ng
- SUNCAT, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Anders Nilsson
- SSRL, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
- Department of Physics, Stockholm University , 10691 Stockholm, Sweden
- SUNCAT, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Dennis Nordlund
- SSRL, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Jens Nørskov
- SUNCAT, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Henrik Öström
- Department of Physics, Stockholm University , 10691 Stockholm, Sweden
| | - Hirohito Ogasawara
- SSRL, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Mats Persson
- Surface Science Research Centre and Department of Chemistry, The University of Liverpool , Liverpool L69 3BX, United Kingdom
| | - William F Schlotter
- LCLS, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Jonas A Sellberg
- SSRL, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
- Department of Physics, Stockholm University , 10691 Stockholm, Sweden
- Department of Applied Physics, KTH Royal Institute of Technology , 10691 Stockholm, Sweden
| | - Martin Wolf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , 14195 Berlin, Germany
| | - Frank Abild-Pedersen
- SUNCAT, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | | | - Wilfried Wurth
- DESY Photon Science , 22607 Hamburg, Germany
- Physik Department, Universität Hamburg and Center for Free-Electron Laser Science , 22761 Hamburg, Germany
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30
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Ogasawara H. Matching pseudocounts for interval estimation of binomial and Poisson parameters. COMMUN STAT-THEOR M 2016. [DOI: 10.1080/03610926.2014.941492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- H. Ogasawara
- Department of Information and Management Science, Otaru University of Commerce, Otaru, Japan
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31
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Öberg H, Gladh J, Marks K, Ogasawara H, Nilsson A, Pettersson LGM, Öström H. Indication of non-thermal contribution to visible femtosecond laser-induced CO oxidation on Ru(0001). J Chem Phys 2015; 143:074701. [PMID: 26298142 DOI: 10.1063/1.4928646] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We studied CO oxidation on Ru(0001) induced by 400 nm and 800 nm femtosecond laser pulses where we find a branching ratio between CO oxidation and desorption of 1:9 and 1:31, respectively, showing higher selectivity towards CO oxidation for the shorter wavelength excitation. Activation energies computed with density functional theory show discrepancies with values extracted from the experiments, indicating both a mixture between different adsorbed phases and importance of non-adiabatic effects on the effective barrier for oxidation. We simulated the reactions using kinetic modeling based on the two-temperature model of laser-induced energy transfer in the substrate combined with a friction model for the coupling to adsorbate vibrations. This model gives an overall good agreement with experiment except for the substantial difference in yield ratio between CO oxidation and desorption at 400 nm and 800 nm. However, including also the initial, non-thermal effect of electrons transiently excited into antibonding states of the O-Ru bond yielded good agreement with all experimental results.
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Affiliation(s)
- H Öberg
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - J Gladh
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - K Marks
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - H Ogasawara
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - A Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - L G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - H Öström
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
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32
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LaRue JL, Katayama T, Lindenberg A, Fisher AS, Öström H, Nilsson A, Ogasawara H. THz-Pulse-Induced Selective Catalytic CO Oxidation on Ru. Phys Rev Lett 2015; 115:036103. [PMID: 26230806 DOI: 10.1103/physrevlett.115.036103] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Indexed: 05/19/2023]
Abstract
We demonstrate the use of intense, quasi-half-cycle THz pulses, with an associated electric field component comparable to intramolecular electric fields, to direct the reaction coordinate of a chemical reaction by stimulating the nuclear motions of the reactants. Using a strong electric field from a THz pulse generated via coherent transition radiation from an ultrashort electron bunch, we present evidence that CO oxidation on Ru(0001) is selectively induced, while not promoting the thermally induced CO desorption process. The reaction is initiated by the motion of the O atoms on the surface driven by the electric field component of the THz pulse, rather than thermal heating of the surface.
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Affiliation(s)
- Jerry L LaRue
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Tetsuo Katayama
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Aaron Lindenberg
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- SIMES Institute for Materials and Energy Science, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA
| | - Alan S Fisher
- Accelerator Directorate, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Henrik Öström
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Anders Nilsson
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - Hirohito Ogasawara
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Stanford Synchrotron Radiation Lightsource (SSRL), SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
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33
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Abstract
Using x-ray photoelectron spectroscopy we observe the breaking of the strong interatomic bond in molecular CO at low temperature on a stepped Cu surface. Since the electronic structure of Cu does not allow for the splitting of CO at such low temperatures it suggests that there may be a less obvious pathway for the process. Through x-ray photoelectron spectroscopy we can clearly identify products associated with the dissociation of CO and the subsequent formation of stable graphitic carbon on the surface. However, the dissociation of CO can be inhibited when the stepped Cu surface is kept clean from surface carbon. These observations imply that the reaction is driven by the presence of small amounts of weakly bound carbon at the surface. Density-functional theory calculations confirm that carbon atoms on a stepped Cu surface indeed are the preferred adsorption sites for CO, which increases the stabilization of CO on the surface and weakens the C-O bond. This results in the breaking of the C-O bond at the step edge via the Boudouard reaction (2CO(ads)→C(ads)+CO(2)) with a barrier of 0.71 eV.
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Affiliation(s)
- M L Ng
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - F Abild-Pedersen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - S Kaya
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Department of Chemistry, Koç University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey
| | - F Mbuga
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - H Ogasawara
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - A Nilsson
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
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34
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Sellberg JA, Kaya S, Segtnan VH, Chen C, Tyliszczak T, Ogasawara H, Nordlund D, Pettersson LGM, Nilsson A. Comparison of x-ray absorption spectra between water and ice: new ice data with low pre-edge absorption cross-section. J Chem Phys 2015; 141:034507. [PMID: 25053326 DOI: 10.1063/1.4890035] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The effect of crystal growth conditions on the O K-edge x-ray absorption spectra of ice is investigated through detailed analysis of the spectral features. The amount of ice defects is found to be minimized on hydrophobic surfaces, such as BaF2(111), with low concentration of nucleation centers. This is manifested through a reduction of the absorption cross-section at 535 eV, which is associated with distorted hydrogen bonds. Furthermore, a connection is made between the observed increase in spectral intensity between 544 and 548 eV and high-symmetry points in the electronic band structure, suggesting a more extended hydrogen-bond network as compared to ices prepared differently. The spectral differences for various ice preparations are compared to the temperature dependence of spectra of liquid water upon supercooling. A double-peak feature in the absorption cross-section between 540 and 543 eV is identified as a characteristic of the crystalline phase. The connection to the interpretation of the liquid phase O K-edge x-ray absorption spectrum is extensively discussed.
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Affiliation(s)
- Jonas A Sellberg
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
| | - Sarp Kaya
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Vegard H Segtnan
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Chen Chen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Tolek Tyliszczak
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Hirohito Ogasawara
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, P.O. Box 20450, Stanford, California 94309, USA
| | - Dennis Nordlund
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, P.O. Box 20450, Stanford, California 94309, USA
| | - Lars G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
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35
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Xin H, LaRue J, Öberg H, Beye M, Dell'Angela M, Turner JJ, Gladh J, Ng ML, Sellberg JA, Kaya S, Mercurio G, Hieke F, Nordlund D, Schlotter WF, Dakovski GL, Minitti MP, Föhlisch A, Wolf M, Wurth W, Ogasawara H, Nørskov JK, Öström H, Pettersson LGM, Nilsson A, Abild-Pedersen F. Strong Influence of Coadsorbate Interaction on CO Desorption Dynamics on Ru(0001) Probed by Ultrafast X-Ray Spectroscopy and Ab Initio Simulations. Phys Rev Lett 2015; 114:156101. [PMID: 25933322 DOI: 10.1103/physrevlett.114.156101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Indexed: 06/04/2023]
Abstract
We show that coadsorbed oxygen atoms have a dramatic influence on the CO desorption dynamics from Ru(0001). In contrast to the precursor-mediated desorption mechanism on Ru(0001), the presence of surface oxygen modifies the electronic structure of Ru atoms such that CO desorption occurs predominantly via the direct pathway. This phenomenon is directly observed in an ultrafast pump-probe experiment using a soft x-ray free-electron laser to monitor the dynamic evolution of the valence electronic structure of the surface species. This is supported with the potential of mean force along the CO desorption path obtained from density-functional theory calculations. Charge density distribution and frozen-orbital analysis suggest that the oxygen-induced reduction of the Pauli repulsion, and consequent increase of the dative interaction between the CO 5σ and the charged Ru atom, is the electronic origin of the distinct desorption dynamics. Ab initio molecular dynamics simulations of CO desorption from Ru(0001) and oxygen-coadsorbed Ru(0001) provide further insights into the surface bond-breaking process.
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Affiliation(s)
- H Xin
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, California 95305, USA
| | - J LaRue
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - H Öberg
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - M Beye
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Helmholtz Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, D-12489 Berlin, Germany
| | - M Dell'Angela
- University of Hamburg and Center for Free Electron Laser Science, Luruper Chausse 149, D-22761 Hamburg, Germany
| | - J J Turner
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - J Gladh
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - M L Ng
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - J A Sellberg
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - S Kaya
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - G Mercurio
- University of Hamburg and Center for Free Electron Laser Science, Luruper Chausse 149, D-22761 Hamburg, Germany
| | - F Hieke
- University of Hamburg and Center for Free Electron Laser Science, Luruper Chausse 149, D-22761 Hamburg, Germany
| | - D Nordlund
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - W F Schlotter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - G L Dakovski
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - M P Minitti
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - A Föhlisch
- Helmholtz Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, D-12489 Berlin, Germany
- Fakultät für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
| | - M Wolf
- Fritz-Haber Institute of the Max-Planck-Society, Faradayweg 4-6, D-14195 Berlin, Germany
| | - W Wurth
- University of Hamburg and Center for Free Electron Laser Science, Luruper Chausse 149, D-22761 Hamburg, Germany
- DESY Photon Science, Notkestrasse 85, 22607 Hamburg, Germany
| | - H Ogasawara
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - J K Nørskov
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, California 95305, USA
| | - H Öström
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - L G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
| | - A Nilsson
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - F Abild-Pedersen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
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Dell'Angela M, Anniyev T, Beye M, Coffee R, Föhlisch A, Gladh J, Kaya S, Katayama T, Krupin O, Nilsson A, Nordlund D, Schlotter WF, Sellberg JA, Sorgenfrei F, Turner JJ, Öström H, Ogasawara H, Wolf M, Wurth W. Vacuum space charge effects in sub-picosecond soft X-ray photoemission on a molecular adsorbate layer. Struct Dyn 2015; 2:025101. [PMID: 26798795 PMCID: PMC4711610 DOI: 10.1063/1.4914892] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 03/03/2015] [Indexed: 06/05/2023]
Abstract
Vacuum space charge induced kinetic energy shifts of O 1s and Ru 3d core levels in femtosecond soft X-ray photoemission spectra (PES) have been studied at a free electron laser (FEL) for an oxygen layer on Ru(0001). We fully reproduced the measurements by simulating the in-vacuum expansion of the photoelectrons and demonstrate the space charge contribution of the high-order harmonics in the FEL beam. Employing the same analysis for 400 nm pump-X-ray probe PES, we can disentangle the delay dependent Ru 3d energy shifts into effects induced by space charge and by lattice heating from the femtosecond pump pulse.
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Affiliation(s)
| | - T Anniyev
- SUNCAT Center for Interface Science and Catalysis , SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | | | - R Coffee
- LCLS, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | | | - J Gladh
- Department of Physics, AlbaNova University Center, Stockholm University , SE-10691 Stockholm, Sweden
| | - S Kaya
- SUNCAT Center for Interface Science and Catalysis , SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - T Katayama
- SUNCAT Center for Interface Science and Catalysis , SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | | | | | - D Nordlund
- SSRL, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - W F Schlotter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | | | - F Sorgenfrei
- Physics Department and Center for Free-Electron Laser Science, Universität Hamburg , 22607 Hamburg, Germany
| | - J J Turner
- Linac Coherent Light Source, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - H Öström
- Department of Physics, AlbaNova University Center, Stockholm University , SE-10691 Stockholm, Sweden
| | | | - M Wolf
- Fritz-Haber Institute , Max Planck Society, Faradayweg 4-6, D-14195 Berlin, Germany
| | - W Wurth
- Physics Department and Center for Free-Electron Laser Science, Universität Hamburg , 22607 Hamburg, Germany
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37
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Öström H, Öberg H, Xin H, LaRue J, Beye M, Dell’Angela M, Gladh J, Ng ML, Sellberg JA, Kaya S, Mercurio G, Nordlund D, Hantschmann M, Hieke F, Kühn D, Schlotter WF, Dakovski GL, Turner JJ, Minitti MP, Mitra A, Moeller SP, Föhlisch A, Wolf M, Wurth W, Persson M, Nørskov JK, Abild-Pedersen F, Ogasawara H, Pettersson LGM, Nilsson A. Probing the transition state region in catalytic CO oxidation on Ru. Science 2015; 347:978-82. [DOI: 10.1126/science.1261747] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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38
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Sellberg JA, McQueen TA, Laksmono H, Schreck S, Beye M, DePonte DP, Kennedy B, Nordlund D, Sierra RG, Schlesinger D, Tokushima T, Zhovtobriukh I, Eckert S, Segtnan VH, Ogasawara H, Kubicek K, Techert S, Bergmann U, Dakovski GL, Schlotter WF, Harada Y, Bogan MJ, Wernet P, Föhlisch A, Pettersson LGM, Nilsson A. X-ray emission spectroscopy of bulk liquid water in “no-man’s land”. J Chem Phys 2015; 142:044505. [DOI: 10.1063/1.4905603] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Affiliation(s)
- Jonas A. Sellberg
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory,2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
| | - Trevor A. McQueen
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory,2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
| | - Hartawan Laksmono
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Simon Schreck
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, 12489 Berlin, Germany
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24–25, 14476 Potsdam, Germany
| | - Martin Beye
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Daniel P. DePonte
- Center for Free-Electron Laser Science, DESY, Notkestraße 85, 22607 Hamburg, Germany
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | | | - Dennis Nordlund
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, P.O. Box 20450, Stanford, California 94309, USA
| | - Raymond G. Sierra
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Daniel Schlesinger
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
| | | | - Iurii Zhovtobriukh
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
| | - Sebastian Eckert
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Vegard H. Segtnan
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory,2575 Sand Hill Road, Menlo Park, California 94025, USA
- Nofima AS, N-1430 Ås, Norway
| | - Hirohito Ogasawara
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, P.O. Box 20450, Stanford, California 94309, USA
| | - Katharina Kubicek
- Photon Science, DESY, Notkestraße 85, 22607 Hamburg, Germany
- IFG Structural Dynamics of (Bio)chemical Systems, Max Planck Institute for Biophysical Chemistry, Am Faßberg 11, 37070 Göttingen, Germany
| | - Simone Techert
- IFG Structural Dynamics of (Bio)chemical Systems, Max Planck Institute for Biophysical Chemistry, Am Faßberg 11, 37070 Göttingen, Germany
- Advanced Study Group of the MPG, CFEL, Notkestraße 85, 22853 Hamburg, Germany
| | - Uwe Bergmann
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Georgi L. Dakovski
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - William F. Schlotter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Yoshihisa Harada
- Institute for Solid State Physics (ISSP), University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
- Synchrotron Radiation Research Organization, University of Tokyo, Sayo-cho, Sayo, Hyogo 679-5198, Japan
| | - Michael J. Bogan
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Philippe Wernet
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Alexander Föhlisch
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, 12489 Berlin, Germany
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24–25, 14476 Potsdam, Germany
| | - Lars G. M. Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
| | - Anders Nilsson
- SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory,2575 Sand Hill Road, Menlo Park, California 94025, USA
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, P.O. Box 20450, Stanford, California 94309, USA
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Malacrida P, Sanchez Casalongue HG, Masini F, Kaya S, Hernández-Fernández P, Deiana D, Ogasawara H, Stephens IEL, Nilsson A, Chorkendorff I. Direct observation of the dealloying process of a platinum–yttrium nanoparticle fuel cell cathode and its oxygenated species during the oxygen reduction reaction. Phys Chem Chem Phys 2015; 17:28121-8. [DOI: 10.1039/c5cp00283d] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Size-selected 9 nm PtxY nanoparticles have recently shown an outstanding catalytic activity for the oxygen reduction reaction, representing a promising cathode catalyst for proton exchange membrane fuel cells (PEMFCs).
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Schreck S, Beye M, Sellberg JA, McQueen T, Laksmono H, Kennedy B, Eckert S, Schlesinger D, Nordlund D, Ogasawara H, Sierra RG, Segtnan VH, Kubicek K, Schlotter WF, Dakovski GL, Moeller SP, Bergmann U, Techert S, Pettersson LGM, Wernet P, Bogan MJ, Harada Y, Nilsson A, Föhlisch A. Reabsorption of soft x-ray emission at high x-ray free-electron laser fluences. Phys Rev Lett 2014; 113:153002. [PMID: 25375708 DOI: 10.1103/physrevlett.113.153002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Indexed: 05/24/2023]
Abstract
We report on oxygen K-edge soft x-ray emission spectroscopy from a liquid water jet at the Linac Coherent Light Source. We observe significant changes in the spectral content when tuning over a wide range of incident x-ray fluences. In addition the total emission yield decreases at high fluences. These modifications result from reabsorption of x-ray emission by valence-excited molecules generated by the Auger cascade. Our observations have major implications for future x-ray emission studies at intense x-ray sources. We highlight the importance of the x-ray pulse length with respect to the core-hole lifetime.
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Affiliation(s)
- Simon Schreck
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany and Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
| | - Martin Beye
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - Jonas A Sellberg
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden and SUNCAT, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Trevor McQueen
- SUNCAT, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA and Department of Chemistry, Stanford University, Stanford, California 94305, USA
| | - Hartawan Laksmono
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Brian Kennedy
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - Sebastian Eckert
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - Daniel Schlesinger
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
| | - Dennis Nordlund
- SSRL, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Hirohito Ogasawara
- SSRL, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Raymond G Sierra
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Vegard H Segtnan
- SUNCAT, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA and Nofima AS, Osloveien 1, N-1430 Ås, Norway
| | - Katharina Kubicek
- FS-Structural Dynamics in (Bio)chemistry, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607 Hamburg, Germany and Max Planck Institute for Biophysical Chemistry, Am Faßberg 11, 37077 Göttingen, Germany
| | - William F Schlotter
- LCLS, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Georgi L Dakovski
- LCLS, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Stefan P Moeller
- LCLS, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Uwe Bergmann
- LCLS, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Simone Techert
- FS-Structural Dynamics in (Bio)chemistry, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607 Hamburg, Germany and Max Planck Institute for Biophysical Chemistry, Am Faßberg 11, 37077 Göttingen, Germany and Institute for X-ray Physics, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - Lars G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden
| | - Philippe Wernet
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - Michael J Bogan
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Yoshihisa Harada
- Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan and Synchrotron Radiation Research Organization, The University of Tokyo, Sayo-cho, Sayo, Hyogo 679-5198, Japan
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University, S-106 91 Stockholm, Sweden and SUNCAT, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA and SSRL, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Alexander Föhlisch
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany and Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
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41
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Siefermann KR, Pemmaraju CD, Neppl S, Shavorskiy A, Cordones AA, Vura-Weis J, Slaughter DS, Sturm FP, Weise F, Bluhm H, Strader ML, Cho H, Lin MF, Bacellar C, Khurmi C, Guo J, Coslovich G, Robinson JS, Kaindl RA, Schoenlein RW, Belkacem A, Neumark DM, Leone SR, Nordlund D, Ogasawara H, Krupin O, Turner JJ, Schlotter WF, Holmes MR, Messerschmidt M, Minitti MP, Gul S, Zhang JZ, Huse N, Prendergast D, Gessner O. Atomic-Scale Perspective of Ultrafast Charge Transfer at a Dye-Semiconductor Interface. J Phys Chem Lett 2014; 5:2753-9. [PMID: 26277975 DOI: 10.1021/jz501264x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Understanding interfacial charge-transfer processes on the atomic level is crucial to support the rational design of energy-challenge relevant systems such as solar cells, batteries, and photocatalysts. A femtosecond time-resolved core-level photoelectron spectroscopy study is performed that probes the electronic structure of the interface between ruthenium-based N3 dye molecules and ZnO nanocrystals within the first picosecond after photoexcitation and from the unique perspective of the Ru reporter atom at the center of the dye. A transient chemical shift of the Ru 3d inner-shell photolines by (2.3 ± 0.2) eV to higher binding energies is observed 500 fs after photoexcitation of the dye. The experimental results are interpreted with the aid of ab initio calculations using constrained density functional theory. Strong indications for the formation of an interfacial charge-transfer state are presented, providing direct insight into a transient electronic configuration that may limit the efficiency of photoinduced free charge-carrier generation.
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Affiliation(s)
- Katrin R Siefermann
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Chaitanya D Pemmaraju
- ‡The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Stefan Neppl
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Andrey Shavorskiy
- §Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Amy A Cordones
- ∥Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Josh Vura-Weis
- ∥Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Daniel S Slaughter
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Felix P Sturm
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Fabian Weise
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Hendrik Bluhm
- §Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Matthew L Strader
- §Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Hana Cho
- §Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Ming-Fu Lin
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- ∥Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Camila Bacellar
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- ∥Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Champak Khurmi
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jinghua Guo
- #Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Giacomo Coslovich
- ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Joseph S Robinson
- ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- ▽Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Robert A Kaindl
- ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Robert W Schoenlein
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- ⊥Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Ali Belkacem
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Daniel M Neumark
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- ∥Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Stephen R Leone
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- ∥Department of Chemistry, University of California, Berkeley, California 94720, United States
- ○Department of Physics, University of California, Berkeley, California 94720, United States
| | - Dennis Nordlund
- ◆SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Hirohito Ogasawara
- ◆SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Oleg Krupin
- ▽Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
- ¶European XFEL GmbH, 22761 Hamburg, Germany
| | - Joshua J Turner
- ▽Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - William F Schlotter
- ▽Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Michael R Holmes
- ▽Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Marc Messerschmidt
- ▽Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Michael P Minitti
- ▽Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Sheraz Gul
- #Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- +Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Jin Z Zhang
- +Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Nils Huse
- ■Physics Department, University of Hamburg and Max-Planck Institute for Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - David Prendergast
- ‡The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Oliver Gessner
- †Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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Sanchez Casalongue HG, Ng ML, Kaya S, Friebel D, Ogasawara H, Nilsson A. In Situ Observation of Surface Species on Iridium Oxide Nanoparticles during the Oxygen Evolution Reaction. Angew Chem Int Ed Engl 2014; 53:7169-72. [DOI: 10.1002/anie.201402311] [Citation(s) in RCA: 316] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 03/27/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Hernan G. Sanchez Casalongue
- Joint Center for Artificial Photosynthesis (JCAP) Energy Innovation Hub, LBNL, 1 Cyclotron Road, MS 976‐JCAP, Berkeley, CA 94720 (USA)
| | - May Ling Ng
- SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, CA 94025 (USA)
| | - Sarp Kaya
- Joint Center for Artificial Photosynthesis (JCAP) Energy Innovation Hub, LBNL, 1 Cyclotron Road, MS 976‐JCAP, Berkeley, CA 94720 (USA)
| | - Daniel Friebel
- Joint Center for Artificial Photosynthesis (JCAP) Energy Innovation Hub, LBNL, 1 Cyclotron Road, MS 976‐JCAP, Berkeley, CA 94720 (USA)
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, CA 94025 (USA)
| | - Anders Nilsson
- Joint Center for Artificial Photosynthesis (JCAP) Energy Innovation Hub, LBNL, 1 Cyclotron Road, MS 976‐JCAP, Berkeley, CA 94720 (USA)
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43
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Sanchez Casalongue HG, Ng ML, Kaya S, Friebel D, Ogasawara H, Nilsson A. In Situ Observation of Surface Species on Iridium Oxide Nanoparticles during the Oxygen Evolution Reaction. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402311] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hernan G. Sanchez Casalongue
- Joint Center for Artificial Photosynthesis (JCAP) Energy Innovation Hub, LBNL, 1 Cyclotron Road, MS 976‐JCAP, Berkeley, CA 94720 (USA)
| | - May Ling Ng
- SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, CA 94025 (USA)
| | - Sarp Kaya
- Joint Center for Artificial Photosynthesis (JCAP) Energy Innovation Hub, LBNL, 1 Cyclotron Road, MS 976‐JCAP, Berkeley, CA 94720 (USA)
| | - Daniel Friebel
- Joint Center for Artificial Photosynthesis (JCAP) Energy Innovation Hub, LBNL, 1 Cyclotron Road, MS 976‐JCAP, Berkeley, CA 94720 (USA)
| | - Hirohito Ogasawara
- SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, CA 94025 (USA)
| | - Anders Nilsson
- Joint Center for Artificial Photosynthesis (JCAP) Energy Innovation Hub, LBNL, 1 Cyclotron Road, MS 976‐JCAP, Berkeley, CA 94720 (USA)
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Miller D, Sanchez Casalongue H, Bluhm H, Ogasawara H, Nilsson A, Kaya S. Different Reactivity of the Various Platinum Oxides and Chemisorbed Oxygen in CO Oxidation on Pt(111). J Am Chem Soc 2014; 136:6340-7. [DOI: 10.1021/ja413125q] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
| | | | - Hendrik Bluhm
- Chemical
Sciences Division, Lawrence Berkeley National Lab, Berkeley, California 94720, United States
| | | | | | - Sarp Kaya
- Department
of Chemistry, Koc University, Rumelifeneri Yolu, Sariyer, 34450, Istanbul Turkey
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Tokano Y, Ogasawara H, Ando S, Fujii T, Kaneko H, Tamura N, Yano T, Hirokawa K, Fukazawa T, Murashima A, Kobayashi S, Sekigawa I, Takasaki Y, Iida N, Hashimoto H. Cyclosporin A therapy for interstitial pneumonitis associated with rheumatic disease. Mod Rheumatol 2014; 12:305-10. [DOI: 10.3109/s101650200054] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Casalongue HS, Kaya S, Viswanathan V, Miller DJ, Friebel D, Hansen HA, Nørskov JK, Nilsson A, Ogasawara H. Direct observation of the oxygenated species during oxygen reduction on a platinum fuel cell cathode. Nat Commun 2013. [DOI: 10.1038/ncomms3817] [Citation(s) in RCA: 264] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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Rajasekaran S, Abild-Pedersen F, Ogasawara H, Nilsson A, Kaya S. Interlayer carbon bond formation induced by hydrogen adsorption in few-layer supported graphene. Phys Rev Lett 2013; 111:085503. [PMID: 24010453 DOI: 10.1103/physrevlett.111.085503] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Indexed: 05/11/2023]
Abstract
We report on the hydrogen adsorption induced phase transition of a few layer graphene (1 to 4 layers) to a diamondlike structure on Pt(111) based on core level x-ray spectroscopy, temperature programed desorption, infrared spectroscopy, and density functional theory total energy calculations. The surface adsorption of hydrogen induces a hybridization change of carbon from the sp2 to the sp3 bond symmetry, which propagates through the graphene layers, resulting in interlayer carbon bond formation. The structure is stabilized through the termination of interfacial sp3 carbon atoms by the substrate. The structural transformation occurs as a consequence of high adsorption energy.
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Affiliation(s)
- Srivats Rajasekaran
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA and SIMES, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
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Schiros T, Andersson KJ, MacNaughton J, Gladh J, Matsuda A, Öström H, Takahashi O, Pettersson LGM, Nilsson A, Ogasawara H. Unique water-water coordination tailored by a metal surface. J Chem Phys 2013; 138:234708. [DOI: 10.1063/1.4809680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Beye M, Anniyev T, Coffee R, Dell'Angela M, Föhlisch A, Gladh J, Katayama T, Kaya S, Krupin O, Møgelhøj A, Nilsson A, Nordlund D, Nørskov JK, Öberg H, Ogasawara H, Pettersson LGM, Schlotter WF, Sellberg JA, Sorgenfrei F, Turner JJ, Wolf M, Wurth W, Oström H. Selective ultrafast probing of transient hot chemisorbed and precursor states of CO on Ru(0001). Phys Rev Lett 2013; 110:186101. [PMID: 23683223 DOI: 10.1103/physrevlett.110.186101] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 04/03/2013] [Indexed: 05/19/2023]
Abstract
We have studied the femtosecond dynamics following optical laser excitation of CO adsorbed on a Ru surface by monitoring changes in the occupied and unoccupied electronic structure using ultrafast soft x-ray absorption and emission. We recently reported [M. Dell'Angela et al. Science 339, 1302 (2013)] a phonon-mediated transition into a weakly adsorbed precursor state occurring on a time scale of >2 ps prior to desorption. Here we focus on processes within the first picosecond after laser excitation and show that the metal-adsorbate coordination is initially increased due to hot-electron-driven vibrational excitations. This process is faster than, but occurs in parallel with, the transition into the precursor state. With resonant x-ray emission spectroscopy, we probe each of these states selectively and determine the respective transient populations depending on optical laser fluence. Ab initio molecular dynamics simulations of CO adsorbed on Ru(0001) were performed at 1500 and 3000 K providing insight into the desorption process.
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Affiliation(s)
- M Beye
- SIMES, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
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Kaya S, Ogasawara H, Näslund LÅ, Forsell JO, Casalongue HS, Miller DJ, Nilsson A. Ambient-pressure photoelectron spectroscopy for heterogeneous catalysis and electrochemistry. Catal Today 2013. [DOI: 10.1016/j.cattod.2012.08.005] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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