|
Hokkaido University Collection of Scholarly and Academic Papers >
Institute for Catalysis >
Peer-reviewed Journal Articles, etc >
Direct Amorphous-structure Analysis : How are Surface/Bulk Structure and Activity of Titania Photocatalyst Particles Changed by Milling?
| Title: | Direct Amorphous-structure Analysis : How are Surface/Bulk Structure and Activity of Titania Photocatalyst Particles Changed by Milling? |
| Authors: | Chen, Guangyi Browse this author | | Takashima, Mai Browse this author | | Ohtani, Bunsho Browse this author →KAKEN DB |
| Keywords: | Rutile titania | | Braying-calcination treatment | | Surface amorphization |
| Issue Date: | 5-Apr-2021 |
| Publisher: | 日本化学会（Chemical Society of Japan） |
| Journal Title: | Chemistry letters |
| Volume: | 50 |
| Issue: | 4 |
| Start Page: | 644 |
| End Page: | 648 |
| Publisher DOI: | 10.1246/cl.200825 |
| Abstract: | Changes in surface and bulk structures of rutile titania particles induced by braying up to 10 d and post calcination in air at 773 K were analyzed by reversed double-beam photoacoustic spectroscopy. The observed energy-resolved distribution of electron traps indicated that the surface was amorphized by braying to give rutile-core amorphous-shell structure and the amorphous layer was partly recrystallized by post-calcination leaving grain boundaries in the surface layers, both of which may cause the observed markedly decreased photocatalytic activities. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/81525 |
| 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)
|
|
