In-situ growth of single-crystal plasmonic aluminum–lithium-graphene nanosheets with a hexagonal platelet-like morphology using ball-milling. (30th June 2021)

• Record Type: Journal Article
• Authors: Ahmad, Sara I.; Hamoudi, Hicham; Ponraj, Janarthanan; Youssef, Khaled M.
• Is Part Of: Carbon. Volume 178(2021)
• Page Start: 657
• Page End: 665
• Publication Date: 2021-06-30
• Subjects: Single-crystal -- Plasmonic -- Graphene -- Aluminum -- Hexagonal nanoplatelets -- Ball-milling; Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2021.03.053
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Metal-graphene nanocomposites and plasmonic metal nanoparticles are two nanoscience fields of a rapidly growing interest due to their potential in advanced applications. In this study, we combine both fields by synthesizing plasmonic aluminum-lithium-graphene nanosheets (Al–Li-GNSs) with anisotropic morphologies using a simple ball-milling technique. Structural analysis using SEM and TEM revealed that the Al–Li-GNSs nanoparticles are single-crystals with a hexagonal platelet-like morphology of a ∼300–500 nm diagonal and a ∼60 nm thickness. Electron diffraction analysis indicated that the as-milled platelets have an FCC structure with (111) top and bottom facets and revealed the presence of 1/3(422) and 1/3(220) forbidden reflections. UV–Vis spectroscopy of the hexagonal Al-based nanoplatelets was found to exhibit plasmonic resonance absorption bands in the UV region at a wavelength of 214 nm and 345 nm. In this report, we confirm the feasibility of building epitaxial plasmonic metal-graphene systems inside bulk metal-graphene composites using a simple milling process. Graphical abstract: Image 1