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- Title
Fabrication of Hybrid Silver Microstructures from Vermiculite Templates as SERS Substrates.
- Authors
Pazos-Perez, Nicolas; Guerrini, Luca; Alvarez-Puebla, Ramon A.
- Abstract
There is great interest in developing complex, 3D plasmonic materials with unusual structural properties. This can be achieved via template-assisted approaches exploiting scaffold elements to engineer unique plasmonic substrates, which would be otherwise impossible to synthesize. Herein, we present a novel, simple, and low-cost template-assisted method for producing interconnected 3-D silver microstructures by utilizing vermiculite, a well-known silicate, as both in-situ reductant and template for silver growth. The silicate network of the vermiculite can be easily removed by dissolution with hydrofluoric acid, which, simultaneously, leads to the formation of a magnesium fluoride skeleton supporting a plasmonically active silver film. Optical, morphological, and chemical properties of the materials were extensively investigated, revealing, for example, that hybrid silver microstructures can be exploited as valuable SERS substrates over a broad spectral range of excitation wavelengths.
- Subjects
VERMICULITE; SILVER; MAGNESIUM fluoride; MICROSTRUCTURE; CHEMICAL properties; ALUMINUM silicates; HYDROFLUORIC acid; SILVER crystals
- Publication
Nanomaterials (2079-4991), 2020, Vol 10, Issue 3, p481
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano10030481