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.

在2022年，我们设计了一种包含Cu2-Xseys1-Y和CD的等离子光电极，用于近红外（NIR）光驱动的水氧化。我们通过CU2-XSEYS1-Y的带工程评估了光电子的性能，这导致了CD和CU2-XSEYS1-Y之间优化的界面电场。在NIR光下，Cu2-Xseys1-Y具有深度费米水平（EF）的良好光电催化氧气反应（OER）活性。我们通过瞬态吸收光谱法说明了热载体的转移。最后，我们发现Cu2-Xseys1-Y的频带工程控制了NIR诱导的光电催化OER。据揭示，不仅具有更深的EF位置，而且还导致了光电催化OER的较强的界面电场。

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