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Palfey WR, Hwang SJ, Goddard WA, Rossman GR. The spectroscopy of hydride in single crystals of SrTiO 3 perovskite. Phys Chem Chem Phys 2024. [PMID: 39320151 DOI: 10.1039/d4cp02852j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
Under reducing conditions, SrTiO3 perovskite can exchange up to 20% of its O2- ions for H- (hydride), greatly influencing its material properties. This not only presents intriguing possibilities for material design, but also for hydrogen sequestration in the deep earth, where perovskite-structured minerals are abundant. However, uncertainties remain surrounding hydride incorporation in SrTiO3, including details of the hydride structural state, and how hydride interacts with the broader defect chemistry of SrTiO3. Additionally, experimental studies of hydride in SrTiO3 and other perovskites may face analytical limitations. The most common methods for characterizing hydride, namely 1H NMR, may not be suitable in all experimental contexts, including materials with relatively low hydride concentrations and in situ high-pressure, high-temperature experiments. Here, we present an investigation of hydride in single crystals of SrTiO3 focused on detailed spectroscopic measurements. Through a combination of density functional theory (DFT)-assisted Fourier transform infrared (FTIR) spectroscopy and UV-vis spectroscopy, we observe structural hydride and its effects on the electronic transitions in SrTiO3. These results are compared directly against 1H NMR. We find that, although hydride is sometimes difficult to identify via FTIR, infrared spectroscopy is significantly more sensitive to hydride than 1H NMR. We also find that DFT makes accurate predictions about the spectroscopic behavior of hydride in SrTiO3, pointing to the value of ab initio techniques in future studies.
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Affiliation(s)
- William R Palfey
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.
| | - Son-Jong Hwang
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - William A Goddard
- Materials and Process Simulation Center (MSC), MC 139-74, California Institute of Technology, Pasadena, CA, USA
| | - George R Rossman
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.
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2
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Mutschke A, Bernard GM, Bertmer M, Karttunen AJ, Ritter C, Michaelis VK, Kunkel N. Na
3
SO
4
H – ein erster Vertreter der Materialklasse der Sulfathydride. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Alexander Mutschke
- Institut für Anorganische Chemie Georg-August-University, Goettingen Tammannstraße 4 37077 Goettingen Deutschland
- Chair for Inorganic Chemistry with Focus on Novel Materials Technical University of Munich Lichtenbergstraße 4 85748 Garching Deutschland
| | - Guy M. Bernard
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Kanada
| | - Marko Bertmer
- Felix Bloch Institute for Solid State Physics Leipzig University Linnéstraße 5 04103 Leipzig Deutschland
| | - Antti J. Karttunen
- Department of Chemistry and Materials Science Aalto University P.O. Box 16100 FI-00076 Aalto Finnland
| | - Clemens Ritter
- Institut Laue-Langevin 71 avenue des Martyrs 38042 Grenoble Cedex 9 Frankreich
| | | | - Nathalie Kunkel
- Institut für Anorganische Chemie Georg-August-University, Goettingen Tammannstraße 4 37077 Goettingen Deutschland
- Chair for Inorganic Chemistry with Focus on Novel Materials Technical University of Munich Lichtenbergstraße 4 85748 Garching Deutschland
- Woehler Research Institute for Sustainable Chemistry (WISCh) Georg-August-University, Göttingen Deutschland
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3
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Mutschke A, Bernard GM, Bertmer M, Karttunen AJ, Ritter C, Michaelis VK, Kunkel N. Na 3 SO 4 H-The First Representative of the Material Class of Sulfate Hydrides. Angew Chem Int Ed Engl 2021; 60:5683-5687. [PMID: 33438295 PMCID: PMC7986708 DOI: 10.1002/anie.202016582] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Indexed: 01/22/2023]
Abstract
The first representative of a novel class of mixed-anionic compounds, the sulfate hydride Na3 SO4 H, and the corresponding deuteride Na3 SO4 D were obtained from the solid-state reaction of NaH or NaD with dry Na2 SO4 . Precise reaction control is required, because too harsh conditions lead to the reduction of sulfate to sulfide. A combined X-ray and neutron diffraction study revealed that the compound crystallizes in the tetragonal space group P4/nmm with the lattice parameters a=7.0034(2) Å and c=4.8569(2) Å. The sole presence of hydride and absence of hydroxide ions is proven by vibrational spectroscopy and comparison with spectra predicted from quantum chemical calculations. 1 H and 23 Na MAS NMR spectra are consistent with the structure of Na3 SO4 H: a single 1 H peak at 2.9 ppm is observed, while two peaks at 15.0 and 6.2 ppm for the inequivalent 23 Na sites are observed. Elemental analysis and quantum chemical calculations further support these results.
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Affiliation(s)
- Alexander Mutschke
- Institut für Anorganische ChemieGeorg-August-University GoettingenTammannstrasse 437077GoettingenGermany
- Chair for Inorganic Chemistry with Focus on Novel MaterialsTechnical University of MunichLichtenbergstrasse 485748GarchingGermany
| | - Guy M. Bernard
- Department of ChemistryUniversity of AlbertaEdmontonAlbertaT6G 2G2Canada
| | - Marko Bertmer
- Felix Bloch Institute for Solid State PhysicsLeipzig UniversityLinnéstrasse 504103LeipzigGermany
| | - Antti J. Karttunen
- Department of Chemistry and Materials ScienceAalto UniversityP.O. Box 16100FI-00076AaltoFinland
| | - Clemens Ritter
- Institut Laue-Langevin71 avenue des Martyrs38042Grenoble Cedex 9France
| | | | - Nathalie Kunkel
- Institut für Anorganische ChemieGeorg-August-University GoettingenTammannstrasse 437077GoettingenGermany
- Chair for Inorganic Chemistry with Focus on Novel MaterialsTechnical University of MunichLichtenbergstrasse 485748GarchingGermany
- Woehler Research Institute for Sustainable Chemistry (WISCh)Georg-August-University, GoettingenGermany
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4
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Wylezich T, Valois R, Suta M, Mutschke A, Ritter C, Meijerink A, Karttunen AJ, Kunkel N. Borate Hydrides as a New Material Class: Structure, Computational Studies, and Spectroscopic Investigations on Sr 5 (BO 3 ) 3 H and Sr 5 ( 11 BO 3 ) 3 D. Chemistry 2020; 26:11742-11750. [PMID: 32542938 PMCID: PMC7540042 DOI: 10.1002/chem.202002273] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Indexed: 12/14/2022]
Abstract
The unprecedented borate hydride Sr5 (BO3 )3 H and deuteride Sr5 (11 BO3 )3 D crystallizing in an apatite-related structure are reported. Despite the presence of hydride anions, the compound decomposes only slowly in air. Doped with Eu2+ , it shows broad-band orange-red emission under violet excitation owing to the 4f6 5d-4f7 transition of Eu2+ . The observed 1 H NMR chemical shift is in good agreement with previously reported 1 H chemical shifts of ionic metal hydrides as well as with quantum chemical calculations and very different from 1 H chemical shifts usually found for hydroxide ions in similar materials. FTIR and Raman spectroscopy of different samples containing 1 H, 2 H, nat B, and 11 B combined with calculations unambiguously prove the absence of hydroxide ions and the sole incorporation of hydride ions into the borate. The orange-red emission obtained by doping with Eu2+ shows that the new compound class might be a promising host material for optical applications.
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Affiliation(s)
- Thomas Wylezich
- Institut für Anorganische ChemieGeorg-August-Universität GöttingenTammannstr. 437077GöttingenGermany
- Woehler Research Institute for Sustainable Chemistry (WISCh)Georg-August-University GoettingenTammannstr. 237077GoettingenGermany
- Chair of Inorganic Chemistry with Focus on Novel MaterialsDepartment of ChemistryTechnical University MunichLichtenbergstr. 485748GarchingGermany
| | - Renaud Valois
- Chair of Inorganic Chemistry with Focus on Novel MaterialsDepartment of ChemistryTechnical University MunichLichtenbergstr. 485748GarchingGermany
- UCCS-UMR CNRS 8181Université d'Artois, Faculté de, Sciences Jean PerrinRue Jean Souvraz62300LensFrance
| | - Markus Suta
- Condensed Matter and InterfacesDebye Institute for, Nanomaterials ScienceDepartment of ChemistryUtrecht UniversityPrincetonplein 13584 CCUtrechtNetherlands
| | - Alexander Mutschke
- Chair of Inorganic Chemistry with Focus on Novel MaterialsDepartment of ChemistryTechnical University MunichLichtenbergstr. 485748GarchingGermany
| | - Clemens Ritter
- Institut Laue-Langevin71 Avenue des Martyrs38042GrenobleFrance
| | - Andries Meijerink
- Condensed Matter and InterfacesDebye Institute for, Nanomaterials ScienceDepartment of ChemistryUtrecht UniversityPrincetonplein 13584 CCUtrechtNetherlands
| | - Antti J. Karttunen
- Department of Chemistry and Materials ScienceAalto UniversityP.O. Box 16100FI-00076AaltoFinland
| | - Nathalie Kunkel
- Institut für Anorganische ChemieGeorg-August-Universität GöttingenTammannstr. 437077GöttingenGermany
- Woehler Research Institute for Sustainable Chemistry (WISCh)Georg-August-University GoettingenTammannstr. 237077GoettingenGermany
- Chair of Inorganic Chemistry with Focus on Novel MaterialsDepartment of ChemistryTechnical University MunichLichtenbergstr. 485748GarchingGermany
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Mutschke A, Wylezich T, Ritter C, Karttunen AJ, Kunkel N. An Unprecedented Fully H
–
‐Substituted Phosphate Hydride Sr
5
(PO
4
)
3
H Expanding the Apatite Family. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901151] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Alexander Mutschke
- Chemistry Department Technische Universität München Lichtenbergstr. 4 85747 Garching Germany
| | - Thomas Wylezich
- Chemistry Department Technische Universität München Lichtenbergstr. 4 85747 Garching Germany
| | - Clemens Ritter
- Institut Laue‐Langevin 71 Rue des Martyrs 38042 Grenoble France
| | - Antti J. Karttunen
- Department of Chemistry and Materials Science Aalto University P.O. Box 16100 FI‐00076 Aalto Finland
| | - Nathalie Kunkel
- Chemistry Department Technische Universität München Lichtenbergstr. 4 85747 Garching Germany
- Institut für Anorganische Chemie Universität Göttingen Tammanstraße 4 37077 Göttingen Germany
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6
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Arai K, Kobayashi Y, Tang Y, Tsutsui Y, Sakamaki D, Yamamoto T, Fujii K, Yashima M, Seki S, Kageyama H. High Pressure Synthesis of Hydride-fluoride Pyrochlore NaCaMg 2F 7−xH x. CHEM LETT 2018. [DOI: 10.1246/cl.180256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kazunari Arai
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yoji Kobayashi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Ya Tang
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yusuke Tsutsui
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Daisuke Sakamaki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takafumi Yamamoto
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kotaro Fujii
- Department of Chemistry, School of Science, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Masatomo Yashima
- Department of Chemistry, School of Science, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroshi Kageyama
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- JST-CREST, 5 Sanbancho, Chiyoda-ku, Tokyo 102-0075, Japan
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7
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Synthesis, thermoluminescence, defect center and dosimetric characteristics of LiF:Mg,Cu,P,Si phosphor. Appl Radiat Isot 2017; 130:21-28. [PMID: 28926796 DOI: 10.1016/j.apradiso.2017.08.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 07/15/2017] [Accepted: 08/18/2017] [Indexed: 11/24/2022]
Abstract
LiF:Mg,Cu,P,Si (MCPS), a new tissue equivalent phosphor, was synthesized by solid state method. Powder x-ray diffraction and scanning electron microscope were employed to determine the structural features. The dosimetric characteristics, electron spin resonance (ESR) and defect centers of this newly prepared phosphor were investigated. The MCPS phosphor is highly sensitive when compared with LiF:Mg,Ti and LiF:Mg,Cu,P (MCP), with the TL sensitivity being 35 times and 1.3 times higher respectively. The dosimetric peak occurs at 220°C with a well defined glow curve structure similar to MCP. MCPS phosphor shows a linear dose response till 10Gy. The minimum detectable dose has been found to be 8μGy. The thermal stability of the phosphor could be enhanced by 20°C from 240°C to 260°C when compared to MCP. Defect centers formed in the phosphor by gamma irradiation have been studied by ESR to identify the centers associated with the TL process in this phosphor. Thermal annealing experiments reveal the presence of several defect centers. Center I which shows an isotropic g factor of 2.0233 has been found to relate with the TL peaks at 160°C, 220°C and 265°C. Centers II and III are characterized by isotropic g values of 2.0096 and 2.0019 respectively and are attributed to F centers.
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8
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Abstract
Properties of glasses are typically controlled by judicious selection of the glass-forming and glass-modifying constituents. Through an experimental and computational study of the crystalline, molten, and amorphous [Ca12Al14O32](2+) ⋅ (e(-))2, we demonstrate that electron anions in this system behave as glass modifiers that strongly affect solidification dynamics, the glass transition temperature, and spectroscopic properties of the resultant amorphous material. The concentration of such electron anions is a consequential control parameter: It invokes materials evolution pathways and properties not available in conventional glasses, which opens a unique avenue in rational materials design.
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