| アイテムタイプ |
共通アイテムタイプ(1) |
| 公開日 |
2025-01-29 |
| タイトル |
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|
タイトル |
A single atom photocatalyst co-doped with potassium and gallium for enhancing photocatalytic hydrogen peroxide synthesis |
|
言語 |
en |
| 著者 |
Cai, Wenan
Tanaka, Yuichiro
Zhu, Xing
横野, 照尚
|
| 著作権関連情報 |
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|
権利情報 |
Copyright (c) Tsinghua University Press 2024. This is a post-peer-review, pre-copyedit version of an article published in Nano Research. The final authenticated version is available online at: https://doi.org/10.1007/s12274-024-6736-9. |
| 抄録 |
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|
内容記述タイプ |
Abstract |
|
内容記述 |
Polymer carbon nitride (PCN) is widely used in photocatalysis. However, pristine PCN has disadvantages such as insufficient visible light absorption and low photogenerated carrier separation efficiency that greatly limited the photocatalytic efficiency. As a non-toxic metal, gallium has the potential to solve the defects of PCN. Gallium ions coordinated with nitrogen in carbon nitride to form Ga-N active sites and improved the photocatalytic activity. The doped potassium ions form a transmission channel for charge redistribution and transfer between adjacent layers, which is beneficial for better separation of photoexcited carriers. In this study, a series of PCN co-doped with gallium and potassium (Ga-K-PCN) were prepared. The experimental results indicated photocatalytic generation of hydrogen peroxide proceeds through the 2e- oxygen reduction reaction pathway. Notably, Nyquist plots and photocurrent results further proved that the presence of Ga-N sites and potassium ion doping could significantly improve the separation/transfer of intra-planar and interlayer charge carriers and thus enhance photocatalytic efficiency. The Ga10-K3-PCN photocatalysts promoted yield of H2O2, with reactivity at 28.2 μmol/(g·h) and solar-to-chemical conversion efficiency at 0.64%, surpassed that of a typical photo-catalyst based on PCN (0.18%). |
|
言語 |
en |
| 書誌情報 |
en : Nano Research
巻 17,
p. 7027-7038,
発行日 2024-06-24
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| 出版社 |
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出版者 |
Springer |
| キーワード |
|
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主題Scheme |
Other |
|
主題 |
photocatalysis |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
gallium |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
oxygen reduction reaction |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
H2O2 production |
| 言語 |
|
|
言語 |
eng |
| 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 |
|
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 |
| DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1007/s12274-024-6736-9 |
| ISSN |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
1998-0124 |
| ISSN |
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収録物識別子タイプ |
EISSN |
|
収録物識別子 |
1998-0000 |
| 査読の有無 |
|
|
値 |
yes |
| 研究者情報 |
|
|
URL |
https://hyokadb02.jimu.kyutech.ac.jp/html/98_ja.html |
| 論文ID（連携） |
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|
値 |
10443532 |
| 連携ID |
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|
値 |
12532 |
10443532.pdf (1.7 MB)
