Decoration of plasmonic Mg nanoparticles by partial galvanic replacement

Asselin, Jérémie; Boukouvala, Christina; Wu, Yuchen; Hopper, Elizabeth R.; Collins, Sean M.; Biggins, John S.; Ringe, Emilie

doi:10.1063/1.5131703

Cited by 22 publications

(46 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this case, the procedure of fabrication was based on a galvanic replacement reaction (GRR). , With respect to chemical dealloying, the GRR enables one to prepare almost oxygen-free porous films, and recently, this method is more and more explored. For example, Asselin et al reported on the decoration of Mg nanoparticles to improve their plasmonic properties, and Liu et al reported on chirality transfer in NPMs during GRR …”

Section: Nanoporous Metals For Enhanced Spectroscopymentioning

confidence: 99%

“…10,51 With respect to chemical dealloying, the GRR enables one to prepare almost oxygen-free porous films, and recently, this method is more and more explored. For example, Asselin et al 158 reported on the decoration of Mg nanoparticles to improve their plasmonic properties, and Liu et al reported on chirality transfer in NPMs during GRR. 159 It is extremely challenging to prepare nanoporous Al by means of chemical dealloying.…”

Section: Nanoporous Metals For Enhanced Spectroscopymentioning

confidence: 99%

See 1 more Smart Citation

Nanoporous Metals: From Plasmonic Properties to Applications in Enhanced Spectroscopy and Photocatalysis

et al. 2021

View full text Add to dashboard Cite

The field of plasmonics is capable of enabling interesting applications in different wavelength ranges, spanning from the ultraviolet up to the infrared. The choice of plasmonic material and how the material is nanostructured has significant implications for ultimate performance of any plasmonic device. Artificially designed nanoporous metals (NPMs) have interesting material properties including large specific surface area, distinctive optical properties, high electrical conductivity, and reduced stiffness, implying their potentials for many applications. This paper reviews the wide range of available nanoporous metals (such as Au, Ag, Cu, Al, Mg, and Pt), mainly focusing on their properties as plasmonic materials. While extensive reports on the use and characterization of NPMs exist, a detailed discussion on their connection with surface plasmons and enhanced spectroscopies as well as photocatalysis is missing. Here, we report on different metals investigated, from the most used nanoporous gold to mixed metal compounds, and discuss each of these plasmonic materials’ suitability for a range of structural design and applications. Finally, we discuss the potentials and limitations of the traditional and alternative plasmonic materials for applications in enhanced spectroscopy and photocatalysis.

show abstract

Section: Nanoporous Metals For Enhanced Spectroscopymentioning

confidence: 99%

Section: Nanoporous Metals For Enhanced Spectroscopymentioning

confidence: 99%

Nanoporous Metals: From Plasmonic Properties to Applications in Enhanced Spectroscopy and Photocatalysis

et al. 2021

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Shapes, Plasmonic Properties, and Reactivity of Magnesium Nanoparticles

Ringe

2020

J. Phys. Chem. C

Self Cite

View full text Add to dashboard Cite

Localized surface plasmon resonances have attracted much attention due to their ability to enhance light–matter interactions and manipulate light at the subwavelength level. Recently, alternatives to the rare and expensive noble metals Ag and Au have been sought for more sustainable and large-scale plasmonic utilization. Mg supports plasmon resonances, is one of the most abundant elements in earth’s crust, and is fully biocompatible, making it an attractive framework for plasmonics. This feature article first reports the hexagonal, folded, and kite-like shapes expected theoretically from a modified Wulff construction for single crystal and twinned Mg structures and describes their excellent match with experimental results. Then, the optical response of Mg nanoparticles is overviewed, highlighting Mg’s ability to sustain localized surface plasmon resonances across the ultraviolet, visible, and near-infrared electromagnetic ranges. The various resonant modes of hexagons, leading to the highly localized electric field characteristic of plasmonic behavior, are presented numerically and experimentally. The evolution of these modes and the associated field from hexagons to the lower symmetry folded structures is then probed, again by matching simulations, optical, and electron spectroscopy data. Lastly, results demonstrating the opportunities and challenges related to the high chemical reactivity of Mg are discussed, including surface oxide formation and galvanic replacement as a synthetic tool for bimetallics. This Feature Article concludes with a summary of the next steps, open questions, and future directions in the field of Mg nanoplasmonics.

show abstract

“…6 The electrochemical reactivity of colloidal Mg -using its strong reducing potential as driving force -leads to rapid galvanic replacement with other metals, such that Mg can be used either as a sacrificial template 7 or a scaffold for partial replacement leading to multifunctional, multimetallic architectures. 8 While Mg's reactivity can be utilised for syntheses, it renders Mg 0 intrinsically unstable in a number of common conditions. Indeed, metallic Mg tends to oxidize spontaneously to form a thin layer of MgO when in contact with air and Mg(OH) 2 when in contact with water.…”

Section: Introductionmentioning

confidence: 99%

“… 6 The electrochemical reactivity of colloidal Mg – using its strong reducing potential as driving force – leads to rapid galvanic replacement with other metals, such that Mg can be used either as a sacrificial template 7 or a scaffold for partial replacement leading to multifunctional, multimetallic architectures. 8 …”

Section: Introductionmentioning

confidence: 99%