Facile chemical routes to mesoporous silver substrates for SERS analysis

Autor: Elina A. Tastekova, Alexander Y. Polyakov, Anastasia E. Goldt, Alexander V. Sidorov, Alexandra A. Oshmyanskaya, Irina V. Sukhorukova, Dmitry V. Shtansky, Wolgang Grünert, Anastasia V. Grigorieva
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Beilstein Journal of Nanotechnology, Vol 9, Iss 1, Pp 880-889 (2018)
Druh dokumentu: article
ISSN: 2190-4286
DOI: 10.3762/bjnano.9.82
Popis: Mesoporous silver nanoparticles were easily synthesized through the bulk reduction of crystalline silver(I) oxide and used for the preparation of highly porous surface-enhanced Raman scattering (SERS)-active substrates. An analogous procedure was successfully performed for the production of mesoporous silver films by chemical reduction of oxidized silver films. The sponge-like silver blocks with high surface area and the in-situ-prepared mesoporous silver films are efficient as both analyte adsorbents and Raman signal enhancement mediators. The efficiency of silver reduction was characterized by X-ray diffraction and X-ray photoelectron spectroscopy. The developed substrates were applied for SERS detection of rhodamine 6G (enhancement factor of about 1–5 × 105) and an anti-ischemic mildronate drug (meldonium; enhancement factor of ≈102) that is known for its ability to increase the endurance performance of athletes.
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