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Suarez Orduz HA, Bugarin L, Heck SL, Dolcet P, Casapu M, Grunwaldt JD, Glatzel P. L 3-edge X-ray spectroscopy of rhodium and palladium compounds. JOURNAL OF SYNCHROTRON RADIATION 2024; 31:733-740. [PMID: 38920268 PMCID: PMC11226176 DOI: 10.1107/s1600577524004673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 05/20/2024] [Indexed: 06/27/2024]
Abstract
L3-edge high-energy-resolution fluorescence-detection X-ray absorption near-edge structure (XANES) spectra for palladium and rhodium compounds are presented, with focus on their electronic structures. The data are compared with transmission XANES spectra recorded at the K-edge. A correlation between the absorption edge energy and the metal ion oxidation state is not observed. Despite the different filling of the 4d orbitals and different local coordination, the Rh and Pd compounds show remarkably similar spectral shapes. Calculation of the density of states and of the L3-XANES data reproduce the experimental results.
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Affiliation(s)
- Hugo Alexander Suarez Orduz
- ESRF – The European Synchrotron, 71 Avenue des Martyrs, 38000Grenoble, France
- Institute for Chemical Technology and Polymer Chemistry (ITCP)Karlsruhe Institute of TechnologyEngesserstr. 18/2076131KarlsruheGermany
| | - Luca Bugarin
- ESRF – The European Synchrotron, 71 Avenue des Martyrs, 38000Grenoble, France
- Ecole Doctorale de PhysiqueGrenoble Alpes University38400Saint-Martin-d’HèresFrance
| | - Sarina-Lena Heck
- Institute for Chemical Technology and Polymer Chemistry (ITCP)Karlsruhe Institute of TechnologyEngesserstr. 18/2076131KarlsruheGermany
| | - Paolo Dolcet
- Institute for Chemical Technology and Polymer Chemistry (ITCP)Karlsruhe Institute of TechnologyEngesserstr. 18/2076131KarlsruheGermany
| | - Maria Casapu
- Institute for Chemical Technology and Polymer Chemistry (ITCP)Karlsruhe Institute of TechnologyEngesserstr. 18/2076131KarlsruheGermany
| | - Jan-Dierk Grunwaldt
- Institute for Chemical Technology and Polymer Chemistry (ITCP)Karlsruhe Institute of TechnologyEngesserstr. 18/2076131KarlsruheGermany
- Institute of Catalysis Research and Technology (IKFT)Karlsruhe Institute of Technology76344Eggenstein-LeopoldshafenGermany
| | - Pieter Glatzel
- ESRF – The European Synchrotron, 71 Avenue des Martyrs, 38000Grenoble, France
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Seddon-Ferretti ME, Mottram LM, Stennett MC, Corkhill CL, Hyatt NC. HERMES - a GUI-based software tool for pre-processing of X-ray absorption spectroscopy data from laboratory Rowland circle spectrometers. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:276-279. [PMID: 34985445 PMCID: PMC8733975 DOI: 10.1107/s1600577521012583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 11/25/2021] [Indexed: 06/14/2023]
Abstract
HERMES, a graphical user interface software tool, is presented, for pre-processing X-ray absorption spectroscopy (XAS) data from laboratory Rowland circle spectrometers, to meet the data handling needs of a growing community of practice. HERMES enables laboratory XAS data to be displayed for quality assessment, merging of data sets, polynomial fitting of smoothly varying data, and correction of data to the true energy scale and for dead-time and leakage effects. The software is written in Java 15 programming language, and runs on major computer operating systems, with graphics implementation using the JFreeChart toolkit. HERMES is freely available and distributed under an open source licence.
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Affiliation(s)
- Marco E. Seddon-Ferretti
- Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
- Department of Computer Science, University of Sheffield, Regent Court, Sheffield S1 4DP, United Kingdom
| | - Lucy M. Mottram
- Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Martin C. Stennett
- Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Claire L. Corkhill
- Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Neil C. Hyatt
- Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
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Huang J, Günther B, Achterhold K, Dierolf M, Pfeiffer F. Simultaneous two-color X-ray absorption spectroscopy using Laue crystals at an inverse-compton scattering X-ray facility. JOURNAL OF SYNCHROTRON RADIATION 2021; 28:1874-1880. [PMID: 34738942 PMCID: PMC8570203 DOI: 10.1107/s1600577521009437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
X-ray absorption spectroscopy (XAS) is an element-selective technique that provides electronic and structural information of materials and reveals the essential mechanisms of the reactions involved. However, the technique is typically conducted at synchrotrons and usually only probes one element at a time. In this paper, a simultaneous two-color XAS setup at a laboratory-scale synchrotron facility is proposed based on inverse Compton scattering (ICS) at the Munich Compact Light Source (MuCLS), which is based on inverse Compton scattering (ICS). The setup utilizes two silicon crystals in a Laue geometry. A proof-of-principle experiment is presented where both silver (Ag) and palladium (Pd) K-edge X-ray absorption near-edge structure spectra were simultaneously measured. The simplicity of the setup facilitates its migration to other ICS facilities or maybe to other X-ray sources (e.g. a bending-magnet beamline). Such a setup has the potential to study reaction mechanisms and synergistic effects of chemical systems containing multiple elements of interest, such as a bimetallic catalyst system.
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Affiliation(s)
- Juanjuan Huang
- Chair of Biomedical Physics, Department of Physics, School of Natural Sciences, Technical University of Munich, 85748 Garching, Germany
- Munich Institute of Biomedical Engineering, Technical University of Munich, 85748 Garching, Germany
| | - Benedikt Günther
- Chair of Biomedical Physics, Department of Physics, School of Natural Sciences, Technical University of Munich, 85748 Garching, Germany
- Munich Institute of Biomedical Engineering, Technical University of Munich, 85748 Garching, Germany
| | - Klaus Achterhold
- Chair of Biomedical Physics, Department of Physics, School of Natural Sciences, Technical University of Munich, 85748 Garching, Germany
- Munich Institute of Biomedical Engineering, Technical University of Munich, 85748 Garching, Germany
| | - Martin Dierolf
- Chair of Biomedical Physics, Department of Physics, School of Natural Sciences, Technical University of Munich, 85748 Garching, Germany
- Munich Institute of Biomedical Engineering, Technical University of Munich, 85748 Garching, Germany
| | - Franz Pfeiffer
- Chair of Biomedical Physics, Department of Physics, School of Natural Sciences, Technical University of Munich, 85748 Garching, Germany
- Munich Institute of Biomedical Engineering, Technical University of Munich, 85748 Garching, Germany
- Department of Diagnostic and Interventional Radiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, 81675 München, Germany
- Institute for Advanced Study, Technical University of Munich, 85748 Garching, Germany
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Bes R, Takala S, Huotari S. Harmonics as an alternative method for measuring I 0 during x-ray absorption spectroscopy experiments at laboratory scale. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:043106. [PMID: 34243462 DOI: 10.1063/5.0046893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/05/2021] [Indexed: 06/13/2023]
Abstract
In the recent years, the advent of an efficient and compact laboratory-scale spectrometer for x-ray absorption spectroscopy experiments has been extensively reported in the literature. Such modern instruments offer the advantage to routinely use x-ray absorption spectroscopy on systematic studies, which is usually unconceivable at synchrotron radiation source facilities due to often limited time access. However, one limiting factor is the fact that due to laboratory x-ray source brightness compared to a synchrotron, two separate measures of the incoming and transmitted x-ray intensities, i.e., the so-called I0 and I1, respectively, are usually required. Herein, we introduce and discuss an alternative approach for measuring I0 and I1 simultaneously. Based on the usage of harmonics arising naturally from the use of monochromator crystals, the reliability and robustness of our proposed approach is demonstrated through experiments at the Co K-edge measured using Co metal foil and at the Nd L3-edge measured in Nd2O3.
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Affiliation(s)
- René Bes
- Department of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Saara Takala
- Department of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Simo Huotari
- Department of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
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Holden WM, Jahrman EP, Govind N, Seidler GT. Probing Sulfur Chemical and Electronic Structure with Experimental Observation and Quantitative Theoretical Prediction of Kα and Valence-to-Core Kβ X-ray Emission Spectroscopy. J Phys Chem A 2020; 124:5415-5434. [PMID: 32486638 DOI: 10.1021/acs.jpca.0c04195] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An extensive experimental and theoretical study of the Kα and Kβ high-resolution X-ray emission spectroscopy (XES) of sulfur-bearing systems is presented. This study encompasses a wide range of organic and inorganic compounds, including numerous experimental spectra from both prior published work and new measurements. Employing a linear-response time-dependent density functional theory (LR-TDDFT) approach, strong quantitative agreement is found in the calculation of energy shifts of the core-to-core Kα as well as the full range of spectral features in the valence-to-core Kβ spectrum. The ability to accurately calculate the sulfur Kα energy shift supports the use of sulfur Kα XES as a bulk-sensitive tool for assessing sulfur speciation. The fine structure of the sulfur Kβ spectrum, in conjunction with the theoretical results, is shown to be sensitive to the local electronic structure including effects of symmetry, ligand type and number, and, in the case of organosulfur compounds, to the nature of the bonded organic moiety. This agreement between theory and experiment, augmented by the potential for high-access XES measurements with the latest generation of laboratory-based spectrometers, demonstrates the possibility of broad analytical use of XES for sulfur and nearby third-row elements. The effective solution of the forward problem, i.e., successful prediction of detailed spectra from known molecular structure, also suggests future use of supervised machine learning approaches to experimental inference, as has seen recent interest for interpretation of X-ray absorption near-edge structure (XANES).
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Affiliation(s)
- William M Holden
- Department of Physics, University of Washington, Seattle, Washington 98195, United States
| | - Evan P Jahrman
- Department of Physics, University of Washington, Seattle, Washington 98195, United States
| | - Niranjan Govind
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Gerald T Seidler
- Department of Physics, University of Washington, Seattle, Washington 98195, United States
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