| Item type |
文献 / Documents(1) |
| 公開日 |
2022-10-14 |
| アクセス権 |
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アクセス権 |
open access |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版社版DOI |
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関連識別子 |
https://doi.org/10.1002/pssa.202100536 |
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関連名称 |
10.1002/pssa.202100536 |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| タイトル |
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|
タイトル |
Photocatalytic Activity Enhancement of Anatase/Rutile-Mixed Phase TiO2 Nanoparticles Annealed with Low-Temperature O2 Plasma |
| 著者 |
川上, 烈生
ミモト, ユウキ
柳谷, 伸一郎
白井, 昭博
ニイベ, マサヒト
ナカノ, ヨシタカ
向井, 孝志
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| 抄録 |
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内容記述 |
Photodecomposition and photobactericidal activities of anatase/rutile-mixed phase TiO2 nanoparticles annealed with low-temperature O2 plasma were clarified by comparing them with those annealed in ambient air. The photocatalytic activities of plasma-assisted-annealed sample greatly enhanced as compared with the untreated sample, under not only ultraviolet irradiation but also visible-light irradiation. The photocatalytic activities of air-annealed samples did not enhance under ultraviolet irradiation but enhanced under visible-light irradiation. The enhanced photocatalytic activities due to the plasma-assisted annealing (PAA) originated from the increased photoexcited carrier concentration. This enhancement was discussed from PAA-induced characteristic factors. PAA facilitated the phase transformation to anatase, contributing directly to extending the photoexcited carrier lifetime. PAA introduced more oxygen vacancies, contributing to trapping more photogenerated electrons. PAA also introduced more bridging/terminal oxygen groups adsorbed on the surface, increasing the upward band-bending, the depletion layer width at the surface, and the charge transfer from rutile to anatase. These two introductions contributed to facilitating the separation of photoexcited carriers. Furthermore, PAA reduced the aggregate size of TiO2 nanoparticles formed on the surface, contributing to increasing optical absorptions. More reactive oxygen species produced from the bridging/terminal oxygen groups by the photoexcited carriers would also enhance the photocatalytic activities. |
| キーワード |
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|
主題 |
titanium oxide nanoparticles |
| キーワード |
|
|
主題 |
anatase/rutile-mixed phases |
| キーワード |
|
|
主題 |
plasma-assisted annealing |
| キーワード |
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|
主題 |
ambient air annealing |
| キーワード |
|
|
主題 |
ultraviolet irradiation |
| キーワード |
|
|
主題 |
visible-light irradiation |
| キーワード |
|
|
主題 |
photocatalytic activity enhancement |
| 書誌情報 |
en : Physica Status Solidi A: applications and materials science
巻 218,
号 24,
p. 2100536,
発行日 2021-10-07
|
| 収録物ID |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
18626300 |
| 収録物ID |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
18626319 |
| 収録物ID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12238581 |
| 収録物ID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12810604 |
| 出版者 |
|
|
出版者 |
Wiley-VCH |
| 権利情報 |
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|
権利情報 |
This is the peer reviewed version of the following article: Kawakami, R., Mimoto, Y., Yanagiya, S., Shirai, A., Niibe, M., Nakano, Y. and Mukai, T. (2021), Photocatalytic Activity Enhancement of Anatase/Rutile-Mixed Phase TiO2 Nanoparticles Annealed with Low-Temperature O2 Plasma. Phys. Status Solidi A, 218: 2100536., which has been published in final form at https://doi.org/10.1002/pssa.202100536. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. |
| EID |
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|
識別子 |
383587 |
| 言語 |
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言語 |
eng |
pssa_218_24_2100536.pdf (4.35 MB)
