Electrochemically prepared porous silver and its application in surface-enhanced Raman scattering

Cheng Fang, Amanda Ellis, Nicolas Voelcker

    Research output: Contribution to journalArticle

    25 Citations (Scopus)

    Abstract

    We have demonstrated for the first time that silver can be electrochemically etched to form porous structures ranging from the nano- to the microscale. Silver wires, foils and films deposited on a silicon wafer were etched in both acidic (HF) and basic (NH3) N,N-dimethylformamide (DMF) solutions. We describe a possible etching mechanism for pore formation in which the convection within the etching solution focuses the etching current, while the organic solvent component stabilizes the nascent pore walls. Finally, the fabricated porous silver was shown to act as an effective substrate for surface-enhanced Raman scattering (SERS).

    Original languageEnglish
    Pages (from-to)151-160
    Number of pages10
    JournalJournal of Electroanalytical Chemistry
    Volume659
    Issue number2
    DOIs
    Publication statusPublished - 2011

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