| Title: | 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 |
| Authors: | Koide, Akihiro Browse this author |
| Uemura, Yohei Browse this author |
| Kido, Daiki Browse this author |
| Wakisaka, Yuki Browse this author |
| Takakusagi, Satoru Browse this author →KAKEN DB |
| Ohtani, Bunsho Browse this author →KAKEN DB |
| Niwa, Yasuhiro Browse this author |
| Nozawa, Shunsuke Browse this author |
| Ichiyanagi, Kohei Browse this author |
| Fukaya, Ryo Browse this author |
| Adachi, Shin-ichi Browse this author |
| Katayama, Tetsuo Browse this author |
| Togashi, Tadashi Browse this author |
| Owada, Shigeki Browse this author |
| Yabashi, Makina Browse this author |
| Yamamoto, Yusaku Browse this author |
| Katayama, Misaki Browse this author |
| Hatada, Keisuke Browse this author |
| Yokoyama, Toshihiko Browse this author |
| Asakura, Kiyotaka Browse this author →KAKEN DB |
| Issue Date: | 7-Feb-2020 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | Physical chemistry chemical physics |
| Volume: | 22 |
| Issue: | 5 |
| Start Page: | 2615 |
| End Page: | 2621 |
| Publisher DOI: | 10.1039/c9cp01332f |
| 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 L-1 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 d(xy) and d(zx) orbitals, which were originally located at the bottom of the conduction band with photoexcited electrons. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/80380 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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