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Theoretical analysis of crystal field parameters and zero field splitting parameters for Mn2+ ions in tetramethylammonium tetrachlorozincate (TMATC-Zn). Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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Timoshenko J, Roldan Cuenya B. In Situ/ Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy. Chem Rev 2021; 121:882-961. [PMID: 32986414 PMCID: PMC7844833 DOI: 10.1021/acs.chemrev.0c00396] [Citation(s) in RCA: 173] [Impact Index Per Article: 57.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Indexed: 12/18/2022]
Abstract
During the last decades, X-ray absorption spectroscopy (XAS) has become an indispensable method for probing the structure and composition of heterogeneous catalysts, revealing the nature of the active sites and establishing links between structural motifs in a catalyst, local electronic structure, and catalytic properties. Here we discuss the fundamental principles of the XAS method and describe the progress in the instrumentation and data analysis approaches undertaken for deciphering X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra. Recent usages of XAS in the field of heterogeneous catalysis, with emphasis on examples concerning electrocatalysis, will be presented. The latter is a rapidly developing field with immense industrial applications but also unique challenges in terms of the experimental characterization restrictions and advanced modeling approaches required. This review will highlight the new insight that can be gained with XAS on complex real-world electrocatalysts including their working mechanisms and the dynamic processes taking place in the course of a chemical reaction. More specifically, we will discuss applications of in situ and operando XAS to probe the catalyst's interactions with the environment (support, electrolyte, ligands, adsorbates, reaction products, and intermediates) and its structural, chemical, and electronic transformations as it adapts to the reaction conditions.
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Affiliation(s)
- Janis Timoshenko
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, 14195 Berlin, Germany
| | - Beatriz Roldan Cuenya
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, 14195 Berlin, Germany
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Espinosa A, Castro GR, Reguera J, Castellano C, Castillo J, Camarero J, Wilhelm C, García MA, Muñoz-Noval Á. Photoactivated Nanoscale Temperature Gradient Detection Using X-ray Absorption Spectroscopy as a Direct Nanothermometry Method. NANO LETTERS 2021; 21:769-777. [PMID: 33382624 DOI: 10.1021/acs.nanolett.0c04477] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nanoparticle-mediated thermal treatments have demonstrated high efficacy and versatility as a local anticancer strategy beyond traditional global hyperthermia. Nanoparticles act as heating generators that can trigger therapeutic responses at both the cell and tissue level. In some cases, treatment happens in the absence of a global temperature rise, damaging the tumor cells even more selectively than other nanotherapeutic strategies. The precise determination of the local temperature in the vicinity of such nanoheaters then stands at the heart of thermal approaches to better adjust the therapeutic thermal onset and reduce potential toxicity-related aspects. Herein, we describe an experimental procedure by X-ray absorption spectroscopy, which directly and accurately infers the local temperature of gold-based nanoparticles, single and hybrid nanocrystals, upon laser photoexcitation, revealing significant nanothermal gradients. Such nanothermometric methodology based on the temperature-dependency of atomic parameters of nanoparticles can be extended to any nanosystem upon remote hyperthermal conditions.
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Affiliation(s)
- Ana Espinosa
- IMDEA Nanociencia, c/Faraday, 9, 28049 Madrid, Spain
- Nanobiotecnología (IMDEA-Nanociencia), Unidad Asociada al Centro Nacional de Biotecnología (CSIC), 28049 Madrid, Spain
| | - German R Castro
- Spanish CRG Beamline at the European Synchrotron (ESRF), B.P. 220, F-38043 Grenoble, France
- Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC, 28049 Madrid, Spain
| | - Javier Reguera
- BCMaterials, Basque Center Centre for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Carlo Castellano
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
| | | | - Julio Camarero
- IMDEA Nanociencia, c/Faraday, 9, 28049 Madrid, Spain
- Departamento de Física de la Materia Condensada and Instituto 'Nicolás Cabrera', Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Claire Wilhelm
- Laboratoire Matière et Systèmes, Complexes MSC, UMR 7057, CNRS & University Paris Diderot, Paris Cedex 13 75205, France
| | - Miguel Angel García
- Departamento de Electrocerámica, Instituto de Cerámica y Vidrio, ICV-CSIC, Kelsen 5, 28049 Madrid, Spain
| | - Álvaro Muñoz-Noval
- Departamento de Física Materiales, Facultad CC. Físicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
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Fornasini P, Grisenti R, Dapiaggi M, Agostini G, Miyanaga T. Nearest-neighbour distribution of distances in crystals from extended X-ray absorption fine structure. J Chem Phys 2017; 147:044503. [DOI: 10.1063/1.4995435] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Affiliation(s)
- P. Fornasini
- Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123 Povo, Trento, Italy
| | - R. Grisenti
- Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123 Povo, Trento, Italy
| | - M. Dapiaggi
- Dipartimento di Scienze della Terra, Università di Milano, I-20133 Milano, Italy
| | | | - T. Miyanaga
- Department of Mathematics and Physics, Hirosaki University, Hirosaki, Aomori 036-8561, Japan
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Fröhlich DR, Kremleva A, Rossberg A, Skerencak-Frech A, Koke C, Krüger S, Rösch N, Panak PJ. Combined EXAFS Spectroscopic and Quantum Chemical Study on the Complex Formation of Am(III) with Formate. Inorg Chem 2017; 56:6820-6829. [DOI: 10.1021/acs.inorgchem.7b00035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel R. Fröhlich
- Ruprecht-Karls-Universität Heidelberg, Physikalisch-Chemisches Institut, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
| | - Alena Kremleva
- Technische Universität München, Department Chemie, 85747 Garching, Germany
| | - André Rossberg
- Helmholtz-Zentrum Dresden Rossendorf, Institut für
Ressourcenökologie, P.O. Box 510119, 01314 Dresden, Germany
| | - Andrej Skerencak-Frech
- Karlsruher Institut für Technologie, Institut für Nukleare Entsorgung, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Carsten Koke
- Ruprecht-Karls-Universität Heidelberg, Physikalisch-Chemisches Institut, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
- Karlsruher Institut für Technologie, Institut für Nukleare Entsorgung, P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Sven Krüger
- Technische Universität München, Department Chemie, 85747 Garching, Germany
| | - Notker Rösch
- Technische Universität München, Department Chemie, 85747 Garching, Germany
| | - Petra J. Panak
- Ruprecht-Karls-Universität Heidelberg, Physikalisch-Chemisches Institut, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
- Karlsruher Institut für Technologie, Institut für Nukleare Entsorgung, P.O. Box 3640, 76021 Karlsruhe, Germany
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Açıkgöz M, Gnutek P, Rudowicz C. Modeling zero-field splitting parameters for dopant Mn2+ and Fe3+ ions in anatase TiO2 crystal using superposition model analysis. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2011.12.042] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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