| アイテムタイプ |
学術雑誌論文 = Journal Article(1) |
| 公開日 |
2025-01-14 |
| 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 |
| タイトル |
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タイトル |
Spatially charge-separated 2D homojunction for photocatalytic hydrogen production |
|
言語 |
en |
| 言語 |
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|
言語 |
eng |
| 著者 |
Wang, Xi-Juan
Yuan, Sai-Sai
Yang, Lei
Dong, Ying
Chen, Yi-Ming
Zhang, Wu-Xiang
Chen, Chuan-Xiang
Zhang, Qi-Tao
横野, 照尚
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Suppression of photogenerated charge recombination is crucial for efficient photocatalytic hydrogen production. Homojunctions have garnered more attention than heterojunctions due to their superior crystal binding and band structure matching. However, most homojunctions suffer from redox interference caused by continuous oxidizing and reducing phases that impede the ability to improve photocatalytic activity. Consequently, the preparation of homojunction photocatalysts with completely spatial separation of both in charge and redox phases remains challenging. Here, the preparation of a two-dimensional (2D) homojunction CeO2 with a back-to-back geometry and fully separated oxidizing and reducing phases is reported. The prepared CeO2 is composed of nanosheets with two contrasting smooth and rough surfaces. Experimental and theoretical results indicate that the rough surface contains more highly reducing CeO2{220} and strongly visible-light-absorbing CeO2{200} facets than the smooth surface. The 2D homojunction CeO2 produces three-times more hydrogen than normal CeO2 nanosheets, and even more than that of CeO2 nanosheets loaded with gold nanoparticles. This work presents a new homojunction photocatalyst model with completely spatial separation of both in charge and redox phases that is expected to inspire further research into homojunction photocatalysts. |
|
言語 |
en |
| 抄録 |
|
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内容記述タイプ |
Abstract |
|
内容記述 |
抑制光生电荷复合对有效的光催化制氢至关重要。同质结由于其优异的晶体结合和能带结构匹配性能而受到了比异质结更多的关注。然而, 大多数同质结的氧化和还原相连续分布, 引起的氧化还原反应的相互干扰, 阻碍了提高光催化活性的能力。因此, 制备电荷和氧化还原相在空间上完全分离的同质结光催化剂仍然具有挑战性。在这里, 我们报道了一个二维(2D)同质结CeO2, 氧化还原相具有背靠背的完全分离结构。实验和理论结果表明, 与光滑表面相比, 粗糙表面含有更多的高还原性CeO2{220}和强可见光吸收CeO2{200}晶面。与普通的CeO2纳米片相比, 2D异面同质结CeO2纳米片产生的氢气量是普通CeO2纳米片的三倍, 甚至比负载了金纳米颗粒的CeO2纳米片产生的氢气量还要多。这项工作提出了一种新的具有完全空间分离的电荷相和氧化还原相的同质结光催化剂模型, 将激发研究者对同质结光催化剂的进一步研究。 |
|
言語 |
zh-cn |
| 書誌情報 |
en : Rare metals
巻 42,
p. 3952-3959,
発行日 2023-11-09
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| 出版社 |
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出版者 |
Springer |
| DOI |
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識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1007/s12598-023-02505-8 |
| NCID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11855662 |
| 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 |
1001-0521 |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
1867-7185 |
| 著作権関連情報 |
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|
権利情報 |
Copyright (c) Youke Publishing Co., Ltd. 2023. This is a post-peer-review, pre-copyedit version of an article published in Rare metals. The final authenticated version is available online at: https://doi.org/10.1007/s12598-023-02505-8. |
| 出版タイプ |
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|
出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 査読の有無 |
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|
値 |
yes |
| 研究者情報 |
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|
URL |
https://hyokadb02.jimu.kyutech.ac.jp/html/98_ja.html |
| 論文ID（連携） |
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|
値 |
10428069 |
| 連携ID |
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|
値 |
11688 |
10428069.pdf (263 KB)
