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Abstract

Copper foils for a Raman study were prepared by a chemical etching method with HNO₃. These foils were found to exhibit a strong SERS effect. SERS or SERRS spectra of cobalt phthalocyanine, cystamine dihydrochloride, benzylamine, and p-thiocresol have been taken to illustrate the usefulness of this sample preparation technique. The enhancement effect of HNO₃-roughened copper foil shows better thermal stability than that of vacuum-deposited Ag/CaF₂ substrate. The HNO₃-roughened copper foil seems to be a more easily prepared substrate system for SERS studies. There is a high potential that this technique could be used in studies of adsorption, molecular orientation, surface reaction, and surface catalysis at room or elevated temperatures.

Keywords

Surface-enhanced (resonance) Raman scattering Copper Adsorption Surface reaction Catalysis

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Surface-Enhanced Raman Scattering (SERS) and Surface-Enhanced Resonance Raman Scattering (SERRS) on HNO 3 -Roughened Copper Foil

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