Overview on the Synthesis of Activated Micro- and Nanostructurized Rieke Metals: History and Present State

Garza-Rodríguez, L. A.; Kharisov, Boris I.; Kharissova, Oxana V.

doi:10.1080/15533170902918825

Cited by 17 publications

(12 citation statements)

References 66 publications

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“…Hexagonal close packed (HCP) Mg, for instance, has attracted much interest as a plasmonic metal because of its low losses across the ultraviolet, visible, and near-infrared − electromagnetic ranges and its abundance in earth’s crust. Its optical properties were first described from studies of fabricated structures such as helices and nanodisks; recently the plasmonic activity of colloidally synthesized Mg NPs and decorated Mg NPs was reported. , In parallel, the number of reported syntheses of metallic Mg NPs, focused on hydrogen or energy storage applications, has bloomed in the past decade. − …”

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confidence: 99%

Tents, Chairs, Tacos, Kites, and Rods: Shapes and Plasmonic Properties of Singly Twinned Magnesium Nanoparticles

et al. 2020

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Nanostructures of some metals can sustain light-driven electron oscillations called localized surface plasmon resonances, or LSPRs, that give rise to absorption, scattering, and local electric field enhancement. Their resonant frequency is dictated by the nanoparticle (NP) shape and size, fueling much research geared toward discovery and control of new structures. LSPR properties also depend on composition; traditional, rare, and expensive noble metals (Ag, Au) are increasingly eclipsed by earth-abundant alternatives, with Mg being an exciting candidate capable of sustaining resonances across the ultraviolet, visible, and near-infrared spectral ranges. Here, we report numerical predictions and experimental verifications of a set of shapes based on Mg NPs displaying various twinning patterns including (101̅1), (101̅2), (101̅3), and (112̅1), that create tent-, chair-, taco-, and kite-shaped NPs, respectively. These are strikingly different from what is obtained for typical plasmonic metals because Mg crystallizes in a hexagonal close packed structure, as opposed to the cubic Al, Cu, Ag, and Au. A numerical survey of the optical response of the various structures, as well as the effect of size and aspect ratio, reveals their rich array of resonances, which are supported by single-particle optical scattering experiments. Further, corresponding numerical and experimental studies of the near-field plasmon distribution via scanning transmission electron microscopy electron-energy loss spectroscopy unravels a mode nature and distribution that are unlike those of either hexagonal plates or cylindrical rods. These NPs, made from earth-abundant Mg, provide interesting ways to control light at the nanoscale across the ultraviolet, visible, and near-infrared spectral ranges.

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Tents, Chairs, Tacos, Kites, and Rods: Shapes and Plasmonic Properties of Singly Twinned Magnesium Nanoparticles

et al. 2020

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“…Elemental metals, on the other hand, are difficult to handle and need to be dissolved, for instance, in liquid ammonia . Alkaline metal naphthalenides represent an alternative option that was already widely used for establishing main-group element–element bonding, , as so-called activated Rieke metals in alternative to Grignard reagents in organic synthesis, , or for obtaining main-group-element nanoparticles such as boron and silicon. − In view of nanosized transition metals (e.g., Ti 0 , Mo 0 , W 0 , Re 0 , Fe 0 , and Zn 0 ), we also have good experience with lithium and sodium naphthalenides ([LiNaph] and [NaNaph]). , …”

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confidence: 99%

Nanosized Gadolinium and Uranium—Two Representatives of High-Reactivity Lanthanide and Actinide Metal Nanoparticles

et al. 2017

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Gadolinium (Gd 0 ) and uranium (U 0 ) nanoparticles are prepared via lithium naphthalenide ([LiNaph])-driven reduction in tetrahydrofuran (THF) using GdCl 3 and UCl 4 , respectively, as low-cost starting materials. The as-prepared Gd 0 and U 0 suspensions are colloidally stable and contain metal nanoparticles with diameters of 2.5 ± 0.7 nm (Gd 0 ) and 2.0 ± 0.5 nm (U 0 ). Whereas THF suspensions are chemically stable under inert conditions (Ar and vacuum), nanoparticulate powder samples show high reactivity in contact with, for example, oxygen, moisture, alcohols, or halogens. Such small and highly reactive Gd 0 and U 0 nanoparticles are first prepared via a dependable liquid-phase synthesis and stand as representatives for further nanosized lanthanides and actinides.

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“…It is important to note the quick growth of this research area, which is shown by the great number of related publications, and its promising and attractive application field, especially paying attention to the great importance of catalytic applications of nanoalloys. Intrinsic physical and chemical properties of metal nanoparticles − confer them unique properties to be explored. As a result, a variety of applications have reported including the creation of nanocatalysts for efficient selective catalysis, sensors, and filters, among many other applications (fabrication of optics, electronics and magnetic materials).…”

Section: Discussionmentioning

confidence: 99%

Recent Advances in the Synthesis and Main Applications of Metallic Nanoalloys

Muñoz‐Flores

Kharisov

Jiménez-Pérez

et al. 2011

Ind. Eng. Chem. Res.

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Syntheses of nanoalloys using diverse experimental methods are reviewed. The main techniques include microwave heating, laser-assisted methods, chemical vapor deposition, and electrochemical methods, as well as a series of chemical reduction and decomposition routes. The nanoalloys possess a series of useful properties, such as magnetic, semiconducting, field-emission materials, that are being applied in the catalytic processes and the creation of optical, electronic, and magnetic materials.

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Overview on the Synthesis of Activated Micro- and Nanostructurized Rieke Metals: History and Present State

Cited by 17 publications

References 66 publications

Tents, Chairs, Tacos, Kites, and Rods: Shapes and Plasmonic Properties of Singly Twinned Magnesium Nanoparticles

Tents, Chairs, Tacos, Kites, and Rods: Shapes and Plasmonic Properties of Singly Twinned Magnesium Nanoparticles

Nanosized Gadolinium and Uranium—Two Representatives of High-Reactivity Lanthanide and Actinide Metal Nanoparticles

Recent Advances in the Synthesis and Main Applications of Metallic Nanoalloys

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