Effects of solution conditions on the surface-enhanced Raman scattering of cyanide species at Ag electrodes

Diane S. Kellogg; Jeanne E. Pemberton

doi:10.1021/j100289a021

Effects of solution conditions on the surface-enhanced Raman scattering of cyanide species at Ag electrodes

Diane S. Kellogg, Jeanne E. Pemberton

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Abstract

The effect of solution pH and supporting electrolyte anion on the SERS behavior of cyanide species adsorbed at Ag electrodes is described. Signals for the v(CN) are observed in both acidic (pH 2) and basic (pH 11) media in ClO₄^-, Cl^-, and SO₄^2- supporting electrolytes. The frequency and intensity of the v(CN) band are a function of electrode potential in all media. The potential at which the SERS signal reaches a maximum intensity is slightly dependent on the anion of the supporting electrolyte in basic media, but is a strong function of the anion in acidic media. In acid solution, HCN is adsorbed. Two unresolved bands occur in the v(CN) region in acidic media and several possible assignments are proposed. The assignment that best explains all of the experimental data involves both end-bonded and side-bonded HCN. The effect of supporting electrolyte anion on the SERS response is explained in terms of the relative abilities of these anions to influence the self-association of HCN in the interface.

Original language	English (US)
Pages (from-to)	1120-1126
Number of pages	7
Journal	Journal of physical chemistry
Volume	91
Issue number	5
DOIs	https://doi.org/10.1021/j100289a021
State	Published - 1987

ASJC Scopus subject areas

General Engineering
Physical and Theoretical Chemistry

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10.1021/j100289a021

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title = "Effects of solution conditions on the surface-enhanced Raman scattering of cyanide species at Ag electrodes",

abstract = "The effect of solution pH and supporting electrolyte anion on the SERS behavior of cyanide species adsorbed at Ag electrodes is described. Signals for the v(CN) are observed in both acidic (pH 2) and basic (pH 11) media in ClO4-, Cl-, and SO42- supporting electrolytes. The frequency and intensity of the v(CN) band are a function of electrode potential in all media. The potential at which the SERS signal reaches a maximum intensity is slightly dependent on the anion of the supporting electrolyte in basic media, but is a strong function of the anion in acidic media. In acid solution, HCN is adsorbed. Two unresolved bands occur in the v(CN) region in acidic media and several possible assignments are proposed. The assignment that best explains all of the experimental data involves both end-bonded and side-bonded HCN. The effect of supporting electrolyte anion on the SERS response is explained in terms of the relative abilities of these anions to influence the self-association of HCN in the interface.",

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year = "1987",

doi = "10.1021/j100289a021",

language = "English (US)",

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journal = "Journal of physical chemistry",

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publisher = "American Chemical Society",

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TY - JOUR

T1 - Effects of solution conditions on the surface-enhanced Raman scattering of cyanide species at Ag electrodes

AU - Kellogg, Diane S.

AU - Pemberton, Jeanne E.

PY - 1987

Y1 - 1987

N2 - The effect of solution pH and supporting electrolyte anion on the SERS behavior of cyanide species adsorbed at Ag electrodes is described. Signals for the v(CN) are observed in both acidic (pH 2) and basic (pH 11) media in ClO4-, Cl-, and SO42- supporting electrolytes. The frequency and intensity of the v(CN) band are a function of electrode potential in all media. The potential at which the SERS signal reaches a maximum intensity is slightly dependent on the anion of the supporting electrolyte in basic media, but is a strong function of the anion in acidic media. In acid solution, HCN is adsorbed. Two unresolved bands occur in the v(CN) region in acidic media and several possible assignments are proposed. The assignment that best explains all of the experimental data involves both end-bonded and side-bonded HCN. The effect of supporting electrolyte anion on the SERS response is explained in terms of the relative abilities of these anions to influence the self-association of HCN in the interface.

AB - The effect of solution pH and supporting electrolyte anion on the SERS behavior of cyanide species adsorbed at Ag electrodes is described. Signals for the v(CN) are observed in both acidic (pH 2) and basic (pH 11) media in ClO4-, Cl-, and SO42- supporting electrolytes. The frequency and intensity of the v(CN) band are a function of electrode potential in all media. The potential at which the SERS signal reaches a maximum intensity is slightly dependent on the anion of the supporting electrolyte in basic media, but is a strong function of the anion in acidic media. In acid solution, HCN is adsorbed. Two unresolved bands occur in the v(CN) region in acidic media and several possible assignments are proposed. The assignment that best explains all of the experimental data involves both end-bonded and side-bonded HCN. The effect of supporting electrolyte anion on the SERS response is explained in terms of the relative abilities of these anions to influence the self-association of HCN in the interface.

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Effects of solution conditions on the surface-enhanced Raman scattering of cyanide species at Ag electrodes

Abstract

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