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Study of experimental parameters for improved adsorbate detectability in SERS using etched silver substrates
Author(s) -
Pérez R.,
Rupérez A.,
RodriguezCastellón E.,
Laserna J. J.
Publication year - 2000
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/1096-9918(200008)30:1<592::aid-sia856>3.0.co;2-z
Subject(s) - x ray photoelectron spectroscopy , scanning electron microscope , substrate (aquarium) , raman scattering , analytical chemistry (journal) , nitric acid , raman spectroscopy , materials science , chemistry , nanotechnology , chemical engineering , optics , metallurgy , composite material , chromatography , oceanography , physics , engineering , geology
Abstract In order to understand the experimental parameters that influence the optimum surface‐enhanced Raman scattering (SERS) signals obtained using silver foils etched by nitric acid as substrate, silver surfaces were analysed by x‐ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and SERS. The best conditions to obtain the strongest SERS signals when the foils are spotted with 9‐aminoacridine chlorhydrate solutions are determined by comparison of XPS, SEM and SERS results. An adequate etch time for fine‐scale silver protrusions superimposed on the coarser silver surface is highlighted. Copyright © 2000 John Wiley & Sons, Ltd.