期刊
ACS PHOTONICS
卷 9, 期 3, 页码 880-887出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.1c01615
关键词
nanoparticles; aluminum; plasmonics
类别
资金
- Ministere de l'enseignement superieur et de la recherche
- Fonds Europeen de Developpement Regional (FEDER)
- Region Grand-Est
- Conseil general de l'Aube
- Agence nationale de la recherche (ANR), under Project SMFLUONA [ANR-17-CE11-0036]
- EIPHI Graduate School [ANR-17-EURE-0002]
- Graduate School NANO-PHOT [ANR-18-EURE0013]
This article reports on a method for the production of crystalline aluminum nanoparticles starting from commercial aluminum foils without the use of a catalyst. The obtained nanoparticles have long-term stability in ethanol and exhibit well-defined plasmonic resonances.
Numerous applications of nanotechnologies rely on the wide availability of high-quality crystalline nanoparticles (NPs). Although the chemical synthesis of noble metal nanoparticles (gold and silver) is well mastered, pushing the optical response of metallic nanoparticles toward the ultraviolet requires other materials, such as aluminum. Although a few demonstrations of the chemical synthesis of Al nanoparticles have been reported so far, an elaboration path allowing for a wide range of NP size that is compatible with mass production has yet to be demonstrated. In this Article, we report on the production of spherical, size-controlled crystalline Al NPs starting from commercial Al foils and without the use of a catalyst. The proposed method combines sonochemistry with solvochemistry and is fully up-scalable. The obtained NPs have a 10-100 nm crystalline Al core surrounded by a thin alumina shell, allowing long-term stability in ethanol. Well-defined plasmonic resonances in the UV and visible ranges are experimentally evidenced on single nanoparticles.
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