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Almoussawi B, Sen S, Saitzek S, Roussel P, Kabbour H. Designing Visible-Light Photoactive Thioapatites Using Thiovanadate Groups: The Ba 5(VO 4-αS α) 3X (X = F, Cl, I) Phases. Inorg Chem 2023; 62:18970-18981. [PMID: 37932963 DOI: 10.1021/acs.inorgchem.3c02592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
The new thioapatite Ba5(VO4-αSα)3X (X = F, Cl, I) series of compounds was prepared and characterized. Compared to known apatite phases built from unconnected vanadate VO4 groups separated by Ba2+ cations delimiting halide-filled channels, their crystal structure is built from mixed anion thiovanadate VO4-αSα, where V5+ is surrounded by both O and S, therefore exhibiting a triple anion lattice. Here, the strategy consisting in incorporating a chalcogenide anion aims at raising the valence band to bring the band gap to the visible range in order to reach photoactive materials under visible light. Both the halide anion nature and the S/O ratio impact the materials' photoconductivity. While the photocurrent response is comparable to that found in the recently investigated apatite phase Pb5(VO4)3I, a short carrier lifetime is detected as well as a shift of the activity toward the visible light. This apatite series combining thiovanadate and halide-filled channels opens new perspectives in the extended field of apatites and their applications.
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Affiliation(s)
- Batoul Almoussawi
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181,Unité de Catalyse et Chimie du Solide (UCCS), F-59000 Lille, France
| | - Smritijit Sen
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181,Unité de Catalyse et Chimie du Solide (UCCS), F-59000 Lille, France
| | - Sébastien Saitzek
- Univ. Artois, CNRS, Centrale Lille, Univ. Lille, UMR 8181, Unité de Catalyse et Chimie du Solide (UCCS), F-62300 Lens, France
| | - Pascal Roussel
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181,Unité de Catalyse et Chimie du Solide (UCCS), F-59000 Lille, France
| | - Houria Kabbour
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181,Unité de Catalyse et Chimie du Solide (UCCS), F-59000 Lille, France
- Institut des Matériaux de Nantes Jean Rouxel, IMN, Nantes Université, CNRS, F-44000 Nantes,France
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Oka K, Takasu M, Nishiki W, Nishikubo T, Azuma M, Noma N, Iwasaki M. Negative Thermal Expansion in Fluoroapatite Pb 5(VO 4) 3F Enhanced by the Steric Effect of Pb 2. Inorg Chem 2022; 61:12552-12558. [PMID: 35925771 DOI: 10.1021/acs.inorgchem.2c01300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Negative thermal expansion (NTE) is an unusual thermophysical phenomenon and has gained attention as a way of controlling thermal expansion. Here, we report a substantial NTE in fluoroapatite Pb5(VO4)3F in a limited temperature range. The dilatometric study revealed volume shrinkage below 150 K, giving a linear thermal expansion coefficient of αL = -44 ppm/K in the temperature range from 140 to 120 K upon heating. The NTE behavior is associated with a structural transition from the hexagonal (P63/m) phase to the monoclinic (P21/b) phase. Such a structural transition has been found in other apatite-type compounds, but the magnitude of the volume change in Pb5(VO4)3F is remarkable. Our structural analysis revealed that the structural transition is classified as an antiferroelectric-to-paraelectric transition and the volume change during the transition is enhanced by the steric effect of 6s2 lone-pair electrons of Pb2+.
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Affiliation(s)
- Kengo Oka
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Miho Takasu
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Wataru Nishiki
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Takumi Nishikubo
- Kanagawa Institute of Industrial Science and Technology, Simoimaizumi, Ebina, Kanagawa 243-0435, Japan.,Laboratory for Materials and Structures, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Masaki Azuma
- Kanagawa Institute of Industrial Science and Technology, Simoimaizumi, Ebina, Kanagawa 243-0435, Japan.,Laboratory for Materials and Structures, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Naoki Noma
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Mitsunobu Iwasaki
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
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Nakamura M, Akamatsu H, Fujii K, Nambu Y, Ikeda Y, Kanazawa T, Nozawa S, Yashima M, Hayashi K, Maeda K. Synthesis of Hydride-Doped Perovskite Stannate with Visible Light Absorption Capability. Inorg Chem 2022; 61:6584-6593. [DOI: 10.1021/acs.inorgchem.2c00398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masashi Nakamura
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
- Konoshima Chemical Co., Ltd., 80 Koda, Takuma, Mitoyo, Kagawa 769-1103, Japan
| | - Hirofumi Akamatsu
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kotaro Fujii
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Yusuke Nambu
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
- FOREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
- Organization for Advanced Studies, Tohoku University, Sendai 980-8577, Japan
| | - Yoichi Ikeda
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Tomoki Kanazawa
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
| | - Shunsuke Nozawa
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
| | - Masatomo Yashima
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Katsuro Hayashi
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazuhiko Maeda
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
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