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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)
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