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Subías G, Cuartero V, Herrero-Martín J, Lafuerza S, Saveleva VA, Glatzel P, Torchio R, Mathon O, Blasco J. Mechanism Behind the Enhanced Ferromagnetic Contributions Upon Ru Substitution in Ca 3Mn 2O 7 from X-Ray Absorption Spectroscopies. ACS OMEGA 2024; 9:41396-41407. [PMID: 39398152 PMCID: PMC11465480 DOI: 10.1021/acsomega.4c04334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 08/29/2024] [Accepted: 09/03/2024] [Indexed: 10/15/2024]
Abstract
We have studied the local structure and electronic and magnetic properties of hybrid improper ferroelectric Ca3Mn2O7 upon Ru substitution at the Mn site by a combination of atomic-selective X-ray absorption spectroscopies in the soft and hard X-ray energy regimes. Ru substitution enhances the macroscopic ferromagnetic contributions, whose origin is here elucidated. In particular, soft X-ray magnetic circular dichroism (XMCD) data indicate that the spin moments of Mn and Ru are aligned in opposite directions, with the effective magnetic moments of Ru being about 1 order of magnitude smaller than for Mn. The XMCD results also demonstrate the presence of an intrinsic ferromagnetic component in the Mn sublattice for Ru contents x ≥ 0.3, although the values of the net Mn magnetic moment are much smaller than expected for a fully saturated Mn4+ magnetic sublattice. Soft and hard X-ray absorption spectroscopy measurements show that Mn keeps a +4 valence state independently of the Ru content, whereas Ru is in an intermediate valence state, ranging between +4.7 (x ≤ 0.1) and +4.4 (x ≥ 0.7). Analysis of the extended X-ray absorption fine structure (EXAFS) signals at the Mn and Ru K-edges suggests the lack of a complete solid solution in the local structure across the entire range of compositions. These findings disclose the existence of charge transfer between Mn and Ru atoms, so the weak ferromagnetic component is attributed to a canting of the antiferromagnetically ordered Mn4+ spins caused by the oxygen-mediated hybridization between localized Mn4+ 3d and itinerant intermediate valence Ru 4d bands, in analogy to the mechanism proposed for ferromagnetism in ordered doubled perovskites with 3d and 4d/5d transition-metal ions. In the present case, disorder prevents the formation of long-range ferromagnetism.
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Affiliation(s)
- Gloria Subías
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
- Departamento
de Física de la Materia Condensada, Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza 50009, Spain
| | - Vera Cuartero
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
- Departamento
de Ciencia y Tecnología de Materiales y Fluidos, EINA, Universidad de Zaragoza, C/María de Luna 3, Zaragoza 50018, Spain
| | | | - Sara Lafuerza
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
- Departamento
de Física de la Materia Condensada, Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza 50009, Spain
| | - Viktoriia A. Saveleva
- ESRF
− The European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Pieter Glatzel
- ESRF
− The European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Raffaella Torchio
- ESRF
− The European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Olivier Mathon
- ESRF
− The European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Javier Blasco
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
- Departamento
de Física de la Materia Condensada, Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza 50009, Spain
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2
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Willans M, Hollings A, Boseley RE, Munyard T, Ellison GC, Hackett MJ. The application of X-ray fluorescence microscopy and micro-XANES spectroscopy to study neuro-metallomics. J Inorg Biochem 2024:112744. [PMID: 39341704 DOI: 10.1016/j.jinorgbio.2024.112744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 09/02/2024] [Accepted: 09/22/2024] [Indexed: 10/01/2024]
Abstract
This early career research highlight provides a review of my own research program over the last decade, a time frame that encompasses my transition from postdoctoral fellowships to independent researcher. As an analytical chemist and applied spectroscopist, the central theme of my research program over this time has been protocol development at synchrotron facilities, with the main objective to investigate brain metal homeostasis during both brain health and brain disease. I will begin my review with an overview of brain metal homeostasis, before introducing analytical challenges associated with its study. I will then provide a brief summary of the two main X-ray techniques I have used to study brain metal homeostasis, X-ray fluorescence microscopy (XFM) and X-ray absorption near edge structure spectroscopy (XANES). The review then finishes with a summary of my main research contributions using these two techniques, put in the context of the results from others in the field.
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Affiliation(s)
- Meg Willans
- School of Molecular and Life Sciences, Faculty of Science and Engineering, Curtin University, Bentley, WA, Australia
| | - Ashley Hollings
- School of Molecular and Life Sciences, Faculty of Science and Engineering, Curtin University, Bentley, WA, Australia; Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, Australia
| | - Rhiannon E Boseley
- School of Molecular and Life Sciences, Faculty of Science and Engineering, Curtin University, Bentley, WA, Australia
| | - Thomas Munyard
- School of Molecular and Life Sciences, Faculty of Science and Engineering, Curtin University, Bentley, WA, Australia
| | - Gaewyn C Ellison
- School of Molecular and Life Sciences, Faculty of Science and Engineering, Curtin University, Bentley, WA, Australia; Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, Australia
| | - Mark J Hackett
- School of Molecular and Life Sciences, Faculty of Science and Engineering, Curtin University, Bentley, WA, Australia; Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, Australia.
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3
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Bugarin L, Suarez Orduz HA, Glatzel P. Area normalization of HERFD-XANES spectra. JOURNAL OF SYNCHROTRON RADIATION 2024; 31:1118-1125. [PMID: 39105530 PMCID: PMC11371039 DOI: 10.1107/s1600577524005307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 06/05/2024] [Indexed: 08/07/2024]
Abstract
The normalization of X-ray absorption near-edge structure (XANES) spectra is required for comparing spectral features and extracting quantitative information in analytical techniques such as linear combination analysis, principal component analysis and multivariate curve resolution. Most published data are normalized to the edge-jump, but normalization to the spectral area has also been applied. The latter is particularly attractive if only a small energy range around the absorption can be recorded reliably. Here, the two normalization methods are compared at the L3-edge of Pt, Pd and Rh, and at the Ni K-edge using experimental and calculated spectra. Normalization to the spectral area is found to be a viable approach if the range for the area normalization is sufficiently large.
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Affiliation(s)
- Luca Bugarin
- ESRF – The European Synchrotron, 71 Avenue des Martyers, 38000Grenoble, France
- Ecole Doctorale de PhysiqueGrenoble Alpes University38400Saint-Martin-d’HèresFrance
| | - Hugo Alexander Suarez Orduz
- ESRF – The European Synchrotron, 71 Avenue des Martyers, 38000Grenoble, France
- Institute for Chemical Technology and Polymer Chemistry (ITCP)Karlsruhe Institute of TechnologyEngesserstrasse18/2076131KarlsruheGermany
| | - Pieter Glatzel
- ESRF – The European Synchrotron, 71 Avenue des Martyers, 38000Grenoble, France
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4
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Kvashnina KO. Electronic-Structure Interpretation: How Much Do We Understand Ce L 3 XANES? Chemistry 2024; 30:e202400755. [PMID: 38860741 DOI: 10.1002/chem.202400755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/12/2024]
Abstract
Historically, cerium has been attractive for pharmaceutical and industrial applications. The cerium atom has the unique ability to cycle between two chemical states (Ce(III) and Ce(IV)) and drastically adjust its electronic configuration: [Xe] 4f15d16s2 in response to a chemical reaction. Understanding how electrons drive chemical reactions is an important topic. The most direct way of probing the chemical and electronic structure of materials is by X-ray absorption spectroscopy (XAS) or X-ray absorption near-edge structure (XANES) in high energy resolution fluorescence detection (HERFD) mode. Such measurements at the Ce L3 edge have the advantage of a high penetration depth, enabling in-situ reaction studies in a time-resolved manner and investigation of material production or material performance under specific conditions. But how much do we understand Ce L3 XANES? This article provides an overview of the information that can be extracted from experimental Ce L3 XAS/XANES/HERFD data. A collection of XANES data recorded on various cerium systems in HERFD mode is presented here together with detailed discussions on data analysis and the current status of spectral interpretation, including electronic structure calculations.
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Affiliation(s)
- Kristina O Kvashnina
- The Rossendorf Beamline at ESRF, The European Synchrotron, CS40220, 38043, Grenoble Cedex 9, France
- Institute of Resource Ecology, Helmholtz Zentrum Dresden Rossendorf, Dresden, 01328, Germany
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5
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Lopez-Astacio H, Vargas-Perez BL, Del Valle-Perez A, Pollock CJ, Cunci L. Open-source electrochemical cell for in situ X-ray absorption spectroscopy in transmission and fluorescence modes. JOURNAL OF SYNCHROTRON RADIATION 2024; 31:322-327. [PMID: 38306299 PMCID: PMC10914171 DOI: 10.1107/s1600577524000122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 01/04/2024] [Indexed: 02/04/2024]
Abstract
X-ray spectroscopy is a valuable technique for the study of many materials systems. Characterizing reactions in situ and operando can reveal complex reaction kinetics, which is crucial to understanding active site composition and reaction mechanisms. In this project, the design, fabrication and testing of an open-source and easy-to-fabricate electrochemical cell for in situ electrochemistry compatible with X-ray absorption spectroscopy in both transmission and fluorescence modes are accomplished via windows with large opening angles on both the upstream and downstream sides of the cell. Using a hobbyist computer numerical control machine and free 3D CAD software, anyone can make a reliable electrochemical cell using this design. Onion-like carbon nanoparticles, with a 1:3 iron-to-cobalt ratio, were drop-coated onto carbon paper for testing in situ X-ray absorption spectroscopy. Cyclic voltammetry of the carbon paper showed the expected behavior, with no increased ohmic drop, even in sandwiched cells. Chronoamperometry was used to apply 0.4 V versus reversible hydrogen electrode, with and without 15 min of oxygen purging to ensure that the electrochemical cell does not provide any artefacts due to gas purging. The XANES and EXAFS spectra showed no differences with and without oxygen, as expected at 0.4 V, without any artefacts due to gas purging. The development of this open-source electrochemical cell design allows for improved collection of in situ X-ray absorption spectroscopy data and enables researchers to perform both transmission and fluorescence simultaneously. It additionally addresses key practical considerations including gas purging, reduced ionic resistance and leak prevention.
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Affiliation(s)
- Hiram Lopez-Astacio
- Department of Chemistry and Physics, Universidad Ana G. Mendez at Gurabo, Gurabo, Puerto Rico, USA
| | - Brenda Lee Vargas-Perez
- Department of Chemistry, University of Puerto Rico at Rio Piedras, San Juan, Puerto Rico, USA
| | - Angelica Del Valle-Perez
- Department of Chemistry and Physics, Universidad Ana G. Mendez at Gurabo, Gurabo, Puerto Rico, USA
- Department of Chemistry, University of Puerto Rico at Rio Piedras, San Juan, Puerto Rico, USA
| | - Christopher J. Pollock
- Cornell High Energy Synchrotron Source, Wilson Laboratory, Cornell University, Ithaca, NY 14853, USA
| | - Lisandro Cunci
- Department of Chemistry, University of Puerto Rico at Rio Piedras, San Juan, Puerto Rico, USA
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6
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Feijóo J, Yang Y, Fonseca Guzman MV, Vargas A, Chen C, Pollock CJ, Yang P. Operando High-Energy-Resolution X-ray Spectroscopy of Evolving Cu Nanoparticle Electrocatalysts for CO 2 Reduction. J Am Chem Soc 2023; 145:20208-20213. [PMID: 37677089 DOI: 10.1021/jacs.3c08182] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Advances in electrocatalysis research rely heavily on building a thorough mechanistic understanding of catalyst active sites under realistic operating conditions. Only recently have techniques emerged that enable sensitive spectroscopic data collection to distinguish catalytically relevant surface sites from the underlying bulk material under applied potential in the presence of an electrolyte layer. Here, we demonstrate that operando high-energy-resolution fluorescence detected X-ray absorption spectroscopy (HERFD-XAS) is a powerful spectroscopic method which offers critical surface chemistry insights in CO2 electroreduction with sub-electronvolt energy resolution using hard X-rays. Combined with the high surface area-to-volume ratio of 5 nm copper nanoparticles, operando HERFD-XAS allows us to observe with clear evidence the breaking of chemical bonds between the ligands and the Cu surface as part of the ligand desorption process occurring under electrochemical potentials relevant for the CO2 reduction reaction (CO2RR). In addition, the dynamic evolution of oxidation state and coordination number throughout the operation of the nanocatalyst was continuously tracked. With these results in hand, undercoordinated metallic copper nanograins are proposed to be the real active sites in the CO2RR. This work emphasizes the importance of HERFD-XAS compared to routine XAS in catalyst characterization and mechanism exploration, especially in the complicated electrochemical CO2RR.
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Affiliation(s)
- Julian Feijóo
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Yao Yang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Miller Institute for Basic Research in Science, University of California, Berkeley, California 94720, United States
| | - Maria V Fonseca Guzman
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Alfred Vargas
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Chubai Chen
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Christopher J Pollock
- Cornell High Energy Synchrotron Source, Cornell University, Ithaca, New York 14853, United States
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
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7
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Detlefs B, Graziano S, Glatzel P. Fast Chemical Contrast by X-ray Fluorescence Intensity Ratio Detection. Anal Chem 2023. [PMID: 37235752 DOI: 10.1021/acs.analchem.3c00623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We describe a protocol for efficient detection of the chemical state of an element based on X-ray emission (fluorescence) spectroscopy using a Bragg optics spectrometer. The ratio of intensities at two appropriately chosen X-ray emission energies is a self-normalized quantity largely free of experimental artifacts and can thus be recorded with high accuracy. As the X-ray fluorescence lines are chemically sensitive, the intensity ratio identifies the chemical state. Differences between chemical states in spatially inhomogeneous or temporally evolving samples can be identified already with low numbers of photon events. This reduces the time required for data acquisition by 2 orders of magnitude as compared to recording a full spectrum.
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Affiliation(s)
- Blanka Detlefs
- ESRF - The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Serena Graziano
- ESRF - The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Pieter Glatzel
- ESRF - The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
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8
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Tran NTT, Sier D, Kirk T, Tran CQ, Mosselmans JFW, Diaz-Moreno S, Chantler CT. A new satellite of manganese revealed by extended-range high-energy-resolution fluorescence detection. JOURNAL OF SYNCHROTRON RADIATION 2023; 30:605-612. [PMID: 37026392 PMCID: PMC10161895 DOI: 10.1107/s1600577523002539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/14/2023] [Indexed: 05/06/2023]
Abstract
The discovery of a new physical process in manganese metal is reported. This process will also be present for all manganese-containing materials in condensed matter. The process was discovered by applying our new technique of XR-HERFD (extended-range high-energy-resolution fluorescence detection), which was developed from the popular high-resolution RIXS (resonant inelastic X-ray scattering) and HERFD approaches. The acquired data are accurate to many hundreds of standard deviations beyond what is regarded as the criterion for `discovery'. Identification and characterization of many-body processes can shed light on the X-ray absorption fine-structure spectra and inform the scientist on how to interpret them, hence leading to the ability to measure the dynamical nanostructures which are observable using the XR-HERFD method. Although the many-body reduction factor has been used universally in X-ray absorption spectroscopy in analysis over the past 30 years (thousands of papers per year), this experimental result proves that many-body effects are not representable by any constant reduction factor parameter. This paradigm change will provide the foundation for many future studies and X-ray spectroscopy.
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Affiliation(s)
- Nicholas T. T. Tran
- School of Physics, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Daniel Sier
- School of Physics, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Tony Kirk
- Department of Chemistry and Physics, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Chanh Q. Tran
- Department of Chemistry and Physics, La Trobe University, Melbourne, Victoria 3086, Australia
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9
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Zhao Y, Adiyeri Saseendran DP, Huang C, Triana CA, Marks WR, Chen H, Zhao H, Patzke GR. Oxygen Evolution/Reduction Reaction Catalysts: From In Situ Monitoring and Reaction Mechanisms to Rational Design. Chem Rev 2023; 123:6257-6358. [PMID: 36944098 DOI: 10.1021/acs.chemrev.2c00515] [Citation(s) in RCA: 75] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
The oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) are core steps of various energy conversion and storage systems. However, their sluggish reaction kinetics, i.e., the demanding multielectron transfer processes, still render OER/ORR catalysts less efficient for practical applications. Moreover, the complexity of the catalyst-electrolyte interface makes a comprehensive understanding of the intrinsic OER/ORR mechanisms challenging. Fortunately, recent advances of in situ/operando characterization techniques have facilitated the kinetic monitoring of catalysts under reaction conditions. Here we provide selected highlights of recent in situ/operando mechanistic studies of OER/ORR catalysts with the main emphasis placed on heterogeneous systems (primarily discussing first-row transition metals which operate under basic conditions), followed by a brief outlook on molecular catalysts. Key sections in this review are focused on determination of the true active species, identification of the active sites, and monitoring of the reactive intermediates. For in-depth insights into the above factors, a short overview of the metrics for accurate characterizations of OER/ORR catalysts is provided. A combination of the obtained time-resolved reaction information and reliable activity data will then guide the rational design of new catalysts. Strategies such as optimizing the restructuring process as well as overcoming the adsorption-energy scaling relations will be discussed. Finally, pending current challenges and prospects toward the understanding and development of efficient heterogeneous catalysts and selected homogeneous catalysts are presented.
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Affiliation(s)
- Yonggui Zhao
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | | | - Chong Huang
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Carlos A Triana
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Walker R Marks
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Hang Chen
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Han Zhao
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Greta R Patzke
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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10
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Leshchev D, Rakitin M, Luvizotto B, Kadyrov R, Ravel B, Attenkofer K, Stavitski E. The Inner Shell Spectroscopy beamline at NSLS-II: a facility for in situ and operando X-ray absorption spectroscopy for materials research. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:1095-1106. [PMID: 35787577 PMCID: PMC9255565 DOI: 10.1107/s160057752200460x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 05/01/2022] [Indexed: 05/14/2023]
Abstract
The Inner Shell Spectroscopy (ISS) beamline on the 8-ID station at the National Synchrotron Light Source II (NSLS-II), Upton, NY, USA, is a high-throughput X-ray absorption spectroscopy beamline designed for in situ, operando, and time-resolved material characterization using high monochromatic flux and scanning speed. This contribution discusses the technical specifications of the beamline in terms of optics, heat load management, monochromator motion control, and data acquisition and processing. Results of the beamline tests demonstrating the quality of the data obtainable on the instrument, possible energy scanning speeds, as well as long-term beamline stability are shown. The ability to directly control the monochromator trajectory to define the acquisition time for each spectral region is highlighted. Examples of studies performed on the beamline are presented. The paper is concluded with a brief outlook for future developments.
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Affiliation(s)
- Denis Leshchev
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Maksim Rakitin
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Bruno Luvizotto
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Ruslan Kadyrov
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Bruce Ravel
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
- Material Measurement Science Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Klaus Attenkofer
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Eli Stavitski
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
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11
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Cutsail III GE, DeBeer S. Challenges and Opportunities for Applications of Advanced X-ray Spectroscopy in Catalysis Research. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01016] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- George E. Cutsail III
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470 Mülheim an der Ruhr, Germany
- Institute of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstr. 5-7, 45117 Essen, Germany
| | - Serena DeBeer
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470 Mülheim an der Ruhr, Germany
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12
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Svyazhin A, Nalbandyan V, Rovezzi M, Chumakova A, Detlefs B, Guda AA, Santambrogio A, Manceau A, Glatzel P. Chemical Information in the L 3 X-ray Absorption Spectra of Molybdenum Compounds by High-Energy-Resolution Detection and Density Functional Theory. Inorg Chem 2021; 61:869-881. [PMID: 34957831 DOI: 10.1021/acs.inorgchem.1c02600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
X-ray spectroscopy using high-energy-resolution fluorescence detection (HERFD) has critically increased the information content in X-ray spectra. We extend this technique to the tender X-ray range and present a study at the L3-edge of molybdenum. We show how information on the oxidation state, phase composition, and local environment in molybdenum-based compounds can be obtained by analyzing the HERFD L3 X-ray absorption near-edge structure (XANES). We demonstrate that the chemical shift of the L3-edge HERFD spectra follows a parabolic dependence on the oxidation state and show that a qualitative analysis of high-resolution spectra can help to estimate parameters such as distortion of a ligand environment and radial order of atoms around the absorber. In certain cases, the spectra allow disentangling the contributions from bond lengths and angles to the distortion of the ligand polyhedron. Comparison of the high-resolution spectra with theoretical simulations shows that the single-electron approximation is able to reproduce the spectral shape. The results of this work may be useful in every branch of physics, inorganic and organometallic chemistry, catalysis, materials science, biochemistry, and mineralogy where observed changes in performance or chemical properties of Mo-based compounds, accompanied by small changes in spectral shape, are to be related to the details of electronic structure and local atomic environment.
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Affiliation(s)
- Artem Svyazhin
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France.,M. N. Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Science, 620990 Yekaterinburg, Russia
| | - Vladimir Nalbandyan
- Chemistry Faculty, Southern Federal University, Rostov-on-Don 344090, Russia
| | - Mauro Rovezzi
- Université Grenoble Alpes, CNRS, IRD, Irstea, Météo France, OSUG, FAME, 38000 Grenoble, France
| | - Aleksandra Chumakova
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Blanka Detlefs
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Alexander A Guda
- The Smart Materials Research Institute, Southern Federal University, 344090 Rostov-on-Don, Russia
| | - Alessandro Santambrogio
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Alain Manceau
- Université Grenoble Alpes, CNRS, ISTerre, CS 40700, 38058 Grenoble, France
| | - Pieter Glatzel
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
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13
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Philip A, Vasala S, Glatzel P, Karppinen M. Atomic/molecular layer deposition of Ni-terephthalate thin films. Dalton Trans 2021; 50:16133-16138. [PMID: 34671785 DOI: 10.1039/d1dt02966e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Atomic/molecular layer deposition (ALD/MLD) is currently strongly emerging as an intriguing route for novel metal-organic thin-film materials. This approach already covers a variety of metal and organic components, and potential applications related to e.g. sustainable energy technologies. Among the 3d metal components, nickel has remained unexplored so far. Here we report a robust and efficient ALD/MLD process for the growth of high-quality nickel terephthalate thin films. The films are deposited from Ni(thd)2 (thd: 2,2,6,6-tetramethyl-3,5-heptanedionate) and terephthalic acid (1,4-benzenedicarboxylic acid) precursors in the temperature range of 180-280 °C, with appreciably high growth rates up to 2.3 Å per cycle at 200 °C. The films are amorphous but the local structure and chemical state of the films are addressed based on XRR, FTIR and RIXS techniques.
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Affiliation(s)
- Anish Philip
- Department of Chemistry and Materials Science, Aalto University, P.O. Box 16100, FI-00076 Espoo, Finland.
| | - Sami Vasala
- ESRF - The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Pieter Glatzel
- ESRF - The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Maarit Karppinen
- Department of Chemistry and Materials Science, Aalto University, P.O. Box 16100, FI-00076 Espoo, Finland.
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14
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Fransson T, Alonso-Mori R, Chatterjee R, Cheah MH, Ibrahim M, Hussein R, Zhang M, Fuller F, Gul S, Kim IS, Simon PS, Bogacz I, Makita H, de Lichtenberg C, Song S, Batyuk A, Sokaras D, Massad R, Doyle M, Britz A, Weninger C, Zouni A, Messinger J, Yachandra VK, Yano J, Kern J, Bergmann U. Effects of x-ray free-electron laser pulse intensity on the Mn K β 1,3 x-ray emission spectrum in photosystem II-A case study for metalloprotein crystals and solutions. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2021; 8:064302. [PMID: 34849380 PMCID: PMC8610604 DOI: 10.1063/4.0000130] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/24/2021] [Indexed: 05/21/2023]
Abstract
In the last ten years, x-ray free-electron lasers (XFELs) have been successfully employed to characterize metalloproteins at room temperature using various techniques including x-ray diffraction, scattering, and spectroscopy. The approach has been to outrun the radiation damage by using femtosecond (fs) x-ray pulses. An example of an important and damage sensitive active metal center is the Mn4CaO5 cluster in photosystem II (PS II), the catalytic site of photosynthetic water oxidation. The combination of serial femtosecond x-ray crystallography and Kβ x-ray emission spectroscopy (XES) has proven to be a powerful multimodal approach for simultaneously probing the overall protein structure and the electronic state of the Mn4CaO5 cluster throughout the catalytic (Kok) cycle. As the observed spectral changes in the Mn4CaO5 cluster are very subtle, it is critical to consider the potential effects of the intense XFEL pulses on the Kβ XES signal. We report here a systematic study of the effects of XFEL peak power, beam focus, and dose on the Mn Kβ1,3 XES spectra in PS II over a wide range of pulse parameters collected over seven different experimental runs using both microcrystal and solution PS II samples. Our findings show that for beam intensities ranging from ∼5 × 1015 to 5 × 1017 W/cm2 at a pulse length of ∼35 fs, the spectral effects are small compared to those observed between S-states in the Kok cycle. Our results provide a benchmark for other XFEL-based XES studies on metalloproteins, confirming the viability of this approach.
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Affiliation(s)
- Thomas Fransson
- Department of Theoretical Chemistry and Biology, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Roberto Alonso-Mori
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Ruchira Chatterjee
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Mun Hon Cheah
- Department of Chemistry – Ångström Laboratory, Molecular Biomimetics, Uppsala University, SE 75120 Uppsala, Sweden
| | - Mohamed Ibrahim
- Humboldt-Universität zu Berlin, Department of Biology, 10099 Berlin, Germany
| | - Rana Hussein
- Humboldt-Universität zu Berlin, Department of Biology, 10099 Berlin, Germany
| | - Miao Zhang
- Humboldt-Universität zu Berlin, Department of Biology, 10099 Berlin, Germany
| | - Franklin Fuller
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Sheraz Gul
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - In-Sik Kim
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Philipp S. Simon
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Isabel Bogacz
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Hiroki Makita
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | - Sanghoon Song
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Alexander Batyuk
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Dimosthenis Sokaras
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Ramzi Massad
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Margaret Doyle
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | | | - Athina Zouni
- Humboldt-Universität zu Berlin, Department of Biology, 10099 Berlin, Germany
| | | | - Vittal K. Yachandra
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Junko Yano
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Jan Kern
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Uwe Bergmann
- Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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15
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Lee I, Lee MS, Tao L, Ikuno T, Khare R, Jentys A, Huthwelker T, Borca CN, Kalinko A, Gutiérrez OY, Govind N, Fulton JL, Hu JZ, Glezakou VA, Rousseau R, Sanchez-Sanchez M, Lercher JA. Activity of Cu-Al-Oxo Extra-Framework Clusters for Selective Methane Oxidation on Cu-Exchanged Zeolites. JACS AU 2021; 1:1412-1421. [PMID: 34604851 PMCID: PMC8479761 DOI: 10.1021/jacsau.1c00196] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Indexed: 05/08/2023]
Abstract
Cu-zeolites are able to directly convert methane to methanol via a three-step process using O2 as oxidant. Among the different zeolite topologies, Cu-exchanged mordenite (MOR) shows the highest methanol yields, attributed to a preferential formation of active Cu-oxo species in its 8-MR pores. The presence of extra-framework or partially detached Al species entrained in the micropores of MOR leads to the formation of nearly homotopic redox active Cu-Al-oxo nanoclusters with the ability to activate CH4. Studies of the activity of these sites together with characterization by 27Al NMR and IR spectroscopy leads to the conclusion that the active species are located in the 8-MR side pockets of MOR, and it consists of two Cu ions and one Al linked by O. This Cu-Al-oxo cluster shows an activity per Cu in methane oxidation significantly higher than of any previously reported active Cu-oxo species. In order to determine unambiguously the structure of the active Cu-Al-oxo cluster, we combine experimental XANES of Cu K- and L-edges, Cu K-edge HERFD-XANES, and Cu K-edge EXAFS with TDDFT and AIMD-assisted simulations. Our results provide evidence of a [Cu2AlO3]2+ cluster exchanged on MOR Al pairs that is able to oxidize up to two methane molecules per cluster at ambient pressure.
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Affiliation(s)
- Insu Lee
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Mal-Soon Lee
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
- E-mail:
| | - Lei Tao
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Takaaki Ikuno
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Rachit Khare
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Andreas Jentys
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Thomas Huthwelker
- Swiss
Light Source, Laboratory for Synchrotron
Radiation and Femtochemistry (LSF), Forschungsstrasse 110 Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Camelia N. Borca
- Swiss
Light Source, Laboratory for Synchrotron
Radiation and Femtochemistry (LSF), Forschungsstrasse 110 Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | | | - Oliver Y. Gutiérrez
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Niri Govind
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99354, United States
| | - John L. Fulton
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Jian Zhi Hu
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Vassiliki-Alexandra Glezakou
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Roger Rousseau
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Maricruz Sanchez-Sanchez
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
- E-mail:
| | - Johannes A. Lercher
- Department
of Chemistry and Catalysis Research Center, TU München, Lichtenbergstrasse 4, 85748 Garching, Germany
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
- E-mail:
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16
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Asakura H, Tanaka T. Recent Applications of X-ray Absorption Spectroscopy in Combination with High Energy Resolution Fluorescence Detection. CHEM LETT 2021. [DOI: 10.1246/cl.200848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hiroyuki Asakura
- Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Tsunehiro Tanaka
- Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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17
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Glatzel P, Harris A, Marion P, Sikora M, Weng TC, Guilloud C, Lafuerza S, Rovezzi M, Detlefs B, Ducotté L. The five-analyzer point-to-point scanning crystal spectrometer at ESRF ID26. JOURNAL OF SYNCHROTRON RADIATION 2021; 28:362-371. [PMID: 33399588 DOI: 10.1107/s1600577520015416] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 11/20/2020] [Indexed: 05/25/2023]
Abstract
X-ray emission spectroscopy in a point-to-point focusing geometry using instruments that employ more than one analyzer crystal poses challenges with respect to mechanical design and performance. This work discusses various options for positioning the components and provides the formulas for calculating their relative placement. Ray-tracing calculations were used to determine the geometrical contributions to the energy broadening including the source volume as given by the beam footprint on the sample. The alignment of the instrument is described and examples are given for the performance.
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Affiliation(s)
- Pieter Glatzel
- ESRF - The European Synchrotron, 71 Avenue des Martyres, 38000 Grenoble, France
| | | | - Philippe Marion
- ESRF - The European Synchrotron, 71 Avenue des Martyres, 38000 Grenoble, France
| | - Marcin Sikora
- ESRF - The European Synchrotron, 71 Avenue des Martyres, 38000 Grenoble, France
| | - Tsu Chien Weng
- ESRF - The European Synchrotron, 71 Avenue des Martyres, 38000 Grenoble, France
| | - Cyril Guilloud
- ESRF - The European Synchrotron, 71 Avenue des Martyres, 38000 Grenoble, France
| | - Sara Lafuerza
- ESRF - The European Synchrotron, 71 Avenue des Martyres, 38000 Grenoble, France
| | - Mauro Rovezzi
- ESRF - The European Synchrotron, 71 Avenue des Martyres, 38000 Grenoble, France
| | - Blanka Detlefs
- ESRF - The European Synchrotron, 71 Avenue des Martyres, 38000 Grenoble, France
| | - Ludovic Ducotté
- ESRF - The European Synchrotron, 71 Avenue des Martyres, 38000 Grenoble, France
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