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Journal articles
Photoinduced anisotropic distortion as the electron trapping site of tungsten trioxide by ultrafast W L 1 -edge X-ray absorption spectroscopy with full potential multiple scattering calculations
Akihiro Koide
1, 2
Yohei Uemura
2, 3
Daiki Kido
4
Yuki Wakisaka
4
Satoru Takakusagi
4
Bunsho Ohtani
4
Yasuhiro Niwa
5
Shunsuke Nozawa
5
Kohei Ichiyanagi
5
Ryo Fukaya
5
Shin-Ichi Adachi
5
Tetsuo Katayama
6
Tadashi Togashi
6
Shigeki Owada
7
Makina Yabashi
7
Yusaku Yamamoto
8
Misaki Katayama
8
Keisuke Hatada
9
Toshihiko Yokoyama
2
Kiyotaka Asakura
4
Misaki Katayama 8
Author
Keisuke Hatada 9
Author IdHAL : keisuke-hatada
Toshihiko Yokoyama 2
Author
Kiyotaka Asakura 4
Author
1
IPR - Institut de Physique de Rennes (Bâtiment 11A , B, C, E – 10B
263 av. Général Leclerc
35042 Rennes cedex FRANCE - France)
- UR1 - Université de Rennes 1 (2 rue du Thabor - CS 46510 - 35065 Rennes cedex - France)
- UNIV-RENNES - Université de Rennes (France)
- CNRS - Centre National de la Recherche Scientifique : UMR6251 (France)
2
Institute for Molecular Science (Institute for Molecular Science, Myodaiji-cho, Okazaki 444-8585, Japan - Japan)
3
Utrecht University [Utrecht] (Heidelberglaan 8, 3584 CS Utrecht - Netherlands)
4
Hokkaido University [Sapporo, Japan] (5 Chome Kita 8 Jōnishi, Kita Ward, Sapporo, Hokkaido Prefecture 060-0808, Japon
- Japan)
5
High energy accelerator research organization - KEK (1-1 Oho, Tsukuba, Ibaraki 305-0801 - Japan)
6
JASRI - Japan Synchrotron Radiation Research Institute (JASRI, Kouto, Sayo-cho, Hyogo 679-5198, Japan - Japan)
7
RIKEN - RIKEN - Institute of Physical and Chemical Research [Japon] (Hirosawa 2-1, Wako, Saitama 351-0198 - Japan)
8
Ritsumeikan University (Japan)
9
University of Toyama (Gofuku Campus - 3190 Gofuku, Toyama - Japan)
Abstract : Understanding the excited state of photocatalysts is significant to improve their activity for water splitting reaction. X-ray absorption fine structure (XAFS) spectroscopy in X-ray free electron lasers (XFEL) is a powerful method to address dynamic changes in electronic states and structures of photocatalysts in the excited state in ultrafast short time scales. The ultrafast atomic-scale local structural change in photoexcited WO3 was observed by W L1 edge XAFS spectroscopy using an XFEL. An anisotropic local distortion around the W atom could reproduce well the spectral features at a delay time of 100 ps after photoexcitation based on full potential multiple scattering calculations. The distortion involved the movement of W to shrink the shortest W–O bonds and elongate the longest one. The movement of the W atom could be explained by the filling of the dxy and dzx orbitals, which were originally located at the bottom of the conduction band with photoexcited electrons.
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Journal articles
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-02280133
Contributor : Laurent Jonchère <>
Submitted on : Monday, September 9, 2019 - 4:17:51 PM
Last modification on : Tuesday, June 16, 2020 - 3:44:02 PM
Long-term archiving on: : Saturday, February 8, 2020 - 12:11:14 AM
Contributor : Laurent Jonchère <>
Submitted on : Monday, September 9, 2019 - 4:17:51 PM
Last modification on : Tuesday, June 16, 2020 - 3:44:02 PM
Long-term archiving on: : Saturday, February 8, 2020 - 12:11:14 AM
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Photoinduced anisotropic disto...
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Identifiers
- HAL Id : hal-02280133, version 1
- DOI : 10.1039/C9CP01332F
- PUBMED : 30989154
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UNIV-RENNES1 | UR1-UFR-SPM | IPR-MN | IPR | OSUR | CNRS | UNIV-RENNES
Citation
Akihiro Koide, Yohei Uemura, Daiki Kido, Yuki Wakisaka, Satoru Takakusagi, et al.. Photoinduced anisotropic distortion as the electron trapping site of tungsten trioxide by ultrafast W L 1 -edge X-ray absorption spectroscopy with full potential multiple scattering calculations. Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2020, 22 (5), pp.2615-2621. ⟨10.1039/C9CP01332F⟩. ⟨hal-02280133⟩
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