Tailoring the aluminum nanocrystal surface oxide for all- aluminum- based antenna- reactor plasmonic photocatalysts

• 成果类型: Article
• 署名作者: Bayles, Aaron; Fabiano, Catherine J.; Shi, Chuqiao; Yuan, Lin; Yuan, Yigao; Craft, Nolan; Jacobson, Christian R.; Dhindsa, Parmeet; Ogundare, Adebola; Camacho, Yelsin Mendez; Chen, Banghao; Robatjazi, Hossein; Han, Yimo; Strouse, Geoffrey F.; Nordlander, Peter; Everit, Henry O.; Halas, Naomi J.
• 署名单位: Rice University; Rice University; State University System of Florida; Florida State University; Rice University; Rice University; Rice University; Rice University
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-14935
• DOI: 10.1073/pnas.2321852121
• 发表日期: 2024-03-12
• 关键词: hot-carrier; gamma-al2o3; sites; nmr

摘要

Aluminum nanocrystals (AlNCs) are of increasing interest as sustainable, earth- abundant nanoparticles for visible wavelength plasmonics and as versatile nanoantennas for energy- efficient plasmonic photocatalysis. Here, we show that annealing AlNCs under various gases and thermal conditions induces substantial, systematic changes in their surface oxide, modifying crystalline phase, surface morphology, density, and defect type and concentration. Tailoring the surface oxide properties enables AlNCs to function as all- aluminum - based antenna- reactor plasmonic photocatalysts, with the modified surface oxides providing varying reactivities and selectivities for several chemical reactions.