| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2024-12-06 |
| タイトル |
|
|
タイトル |
Catalytic activity of Nb-doped α-Fe2O3—Heterojunction structure, ferrimagnet-like character, and high activity |
|
言語 |
en |
| 作成者 |
Rahman , Habibur
Zhang, Bofan
Kubuki, Shiro
Nakashima, Satoru
|
| アクセス権 |
|
|
アクセス権 |
embargoed access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_f1cf |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
© 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This is not the published version. Please cite only the published version. |
| 権利情報 |
|
|
言語 |
ja |
|
権利情報 |
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。 |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
α-Fe2O3 |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
FeNbO4 |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Heterojunction |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Photo-fenton |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Catalysis |
| 内容記述 |
|
|
内容記述 |
Photocatalytic activity of α-Fe2O3 under visible light had been studied intensively. Rapid electron-hole recombination is the main drawback of α-Fe2O3 and the photocatalytic activity can be enhanced by transition metal doping and heterojunction structure. In the present study, α-Fe2O3 doped with various amounts of Nb were synthesized using a simple sol–gel method, and further characterization and catalytic activity were investigated. PXRD, TEM-EDS and Mössbauer measurement showed the formation of weak-ferromagnetic Nb-doped α-Fe2O3 and FeNbO4, where heterojunction structure was suggested. UV–vis spectrum showed a broad absorption in visible-light regions with a narrow band gap between 2.27 and 2.97 eV. Photo-Fenton reaction using α-Fe2O3 to decompose methylene blue (MB) was conducted to evaluate the catalytic activity. Nb-doped sample showed a significant improvement compared with pure α-Fe2O3. PXRD and Mössbauer spectroscopy revealed the α-Fe2O3 and FeNbO4 phases, which were attached to a magnet due to the ferrimagentic character of Nb-doped α-Fe2O3. The high catalytic activity with k value 7.1 * 10−2/min was obtained for 7.4Nb600. Higher catalytic activity was also observed for 20Nb600 and 40Nb600, which were driven by higher surface area, Nb substitution and heterojunction structure. Mechanistic analysis revealed that the primary reaction of MB decomposition is the Photo-Fenton process. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Elsevier |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1016/j.inoche.2024.113077 |
| 開始ページ |
|
|
開始ページ |
113077 |
| 書誌情報 |
en : Inorganic Chemistry Communications
巻 169,
p. 113077,
発行日 2024-08-31
|
| 旧ID |
55827 |
| 備考 |
The full-text file will be made open to the public on 31 August 2026 in accordance with publisher's 'Terms and Conditions for Self-Archiving' |
InoCheC_169_113077.pdf (1.5 MB)
