高効率赤外光駆動水分解を可能とするプラズモニック光電極の開発

开发可实现高效红外光驱动水分解的等离子体光电极

• 批准号: 21J15848
• 负责人: LI HAN
• 金额: $ 0.96万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-28 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21J15848/
• 关键词: Cu2-xSeyS1-y; plasmon; band engineering; water oxidation; hot carriers; Fermi level; electric field; crystal structure; chemical composition; copper vacancy

In 2022, we designed a plasmonic photoelectrode comprising Cu2-xSeyS1-y and CdS for Near-Infrared (NIR)light driven water oxidation. We evaluated the performance of the photoelectrodes with band engineering of Cu2-xSeyS1-y which resulted in the optimized interfacial electric field between CdS and Cu2-xSeyS1-y. Cu2-xSeyS1-y with a deep fermi level (EF) showed good photoelectrocatalytic Oxygen evolution reaction (OER) activity under NIR light. We illustrated the hot carriers transfer by the transient absorption spectroscopy. Finally, we found that the band engineering of Cu2-xSeyS1-y controlled the NIR-induced photoelectrocatalytic OER. It was revealed that not only the deeper EF position but also the stronger interfacial electric field contributed to the photoelectrocatalytic OER.

2022年，我们设计了一种用于近红外光驱动水氧化的Cu2-xSeyS1-y和CdS组成的等离子体光电极。利用Cu2-xSeyS1-y的能带工程方法对其性能进行了评价，优化了Cu2-xSeyS1-y与硫化镉之间的界面电场。具有深费米能级(EF)的Cu2-xSeyS1-y在近红外光下表现出良好的光电催化析氧反应活性。我们用瞬变吸收光谱说明了热载流子的转移。最后，我们发现Cu2-xSeyS1-y的能带工程控制了近红外诱导的光电催化OER。结果表明，较深的EF位置和较强的界面电场对光电催化OER有贡献。

项目成果

Band Engineering Tuned LSPR in Diverse-Phased Cu2-xSeyS1-y Nanocrystals

能带工程在不同相 Cu2-xSeyS1-y 纳米晶体中调谐 LSPR

• 发表时间: 2022
• 期刊: The Journal of Physical Chemistry C
• 作者: Han Li;Masahiro Shibuta;Takashi Yamada;Hajime Hojo;Hiroyuki S. Kato;Toshiharu Teranishi;Masanori Sakamoto
• 通讯作者: Masanori Sakamoto

Band engineering tune LSPR in diverse-phased Cu2-xSySe1-y nanocrystals

能带工程调整多相 Cu2-xSySe1-y 纳米晶体中的局域表面等离子体共振

• 发表时间: 2022
• 作者: Raymond Stephane;Knafo William;Knebel Georg;Kaneko Koji;Brison Jean-Pascal;Flouquet Jacques;Aoki Dai;Lapertot Gerard;LI HAN
• 通讯作者: LI HAN