| Item type |
文献 / Documents(1) |
| 公開日 |
2025-02-06 |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 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.202400478 |
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関連名称 |
10.1002/pssa.202400478 |
| 出版タイプ |
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|
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 |
Enhanced Photocatalytic Activity of Anatase/Rutile-Mixed Phase Titanium Dioxide Nanoparticles Annealed with Polyethylene Glycol at Low Temperatures in Aluminum Foil-Covered Combustion Boats |
| 著者 |
川上, 烈生
Matsumoto, Takumi
柳谷, 伸一郎
白井, 昭博
Nakano, Yoshitaka
Niibe, Masahito
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| 抄録 |
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内容記述 |
We propose a facile carbon-doping process to enhance the photocatalytic activity of anatase/rutile-mixed phase TiO2 nanoparticles using polyethylene glycol (PEG). The TiO2-PEG composite was loaded into a boat and covered tightly with Al foil to increase the pressure inside that boat during annealing. The boat was annealed for 1 h at different temperatures and PEG ratios. The annealing with 30% PEG at 300 ℃ enhanced the decomposition of organic pollutants and bacterial inactivation under 405 nm light compared to the annealing without Al films. This annealing caused 2.5−3% carbon doping, introduced more oxygen vacancies, and converted PEG into organic compounds rich in C−C bond components. These modifications of TiO2 can be attributed to carbon-centred radicals produced from PEG during annealing. The modifications changed the band structure to enhance the photogenerated carrier concentration responsible for the photocatalytic activity. The carbon doping narrowed the anatase and rutile bandgaps, allowing the anatase phase to absorb 405 nm light. The introduced oxygen vacancies increased the electron-trapping sites and raised the adsorbed oxygen groups enhancing the upward band bending and the depletion layer depth at the surface. The PEG-converted compounds can transfer photogenerated electrons within the compounds to the TiO2 conduction band. |
| キーワード |
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|
主題 |
anatase/rutile-mixed phase titanium |
| キーワード |
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主題 |
polyethylene glycol |
| キーワード |
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|
主題 |
aluminium foil-covered combustion boats |
| キーワード |
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|
主題 |
carbon doping |
| キーワード |
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|
主題 |
organic pollutant |
| キーワード |
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|
主題 |
bacteria |
| 書誌情報 |
en : Physica Status Solidi A: applications and materials science
巻 222,
号 2,
p. 2400478,
発行日 2024-08-23
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| 収録物ID |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
18626300 |
| 収録物ID |
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収録物識別子タイプ |
EISSN |
|
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 |
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|
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., Matsumoto, T., Yanagiya, S., Shirai, A., Nakano, Y., Niibe, M. (2024), Enhanced Photocatalytic Activity of Anatase/Rutile-Mixed Phase Titanium Dioxide Nanoparticles Annealed with Polyethylene Glycol at Low Temperatures in Aluminum Foil-Covered Combustion Boats. Phys. Status Solidi A, 222: 2400478., which has been published in final form at https://doi.org/10.1002/pssa.202400478. 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 |
416017 |
| 言語 |
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言語 |
eng |
pssa_222_2_2400478.pdf (1.8 MB)
