Spectroelectrochemical Investigations of the Interaction of Ethyl Xanthate with Copper, Silver and Gold: II. SERS of Xanthate Adsorbed on Silver and Copper Surfaces
Author(s)
Woods, R
Hope, GA
Brown, GM
Griffith University Author(s)
Year published
1998
Metadata
Show full item recordAbstract
Raman spectroscopy has been applied to the investigation of the interaction of ethyl xanthate with silver and copper surfaces. SERS spectra recorded in situ and on emersed electrodes have confirmed the conclusion of previous studies that ethyl xanthate is chemisorbed on these metals at potentials below the reversible value for the corresponding metalmetal ethyl xanthate couple without change in its molecular integrity. The stretching vibrations of the hydrocarbon groups in the xanthate molecule were found to be suppressed when SERS spectra were recorded in situ, but the corresponding rocking and deformation vibrations were ...
View more >Raman spectroscopy has been applied to the investigation of the interaction of ethyl xanthate with silver and copper surfaces. SERS spectra recorded in situ and on emersed electrodes have confirmed the conclusion of previous studies that ethyl xanthate is chemisorbed on these metals at potentials below the reversible value for the corresponding metalmetal ethyl xanthate couple without change in its molecular integrity. The stretching vibrations of the hydrocarbon groups in the xanthate molecule were found to be suppressed when SERS spectra were recorded in situ, but the corresponding rocking and deformation vibrations were unaffected. The hydrocarbon stretching vibrations were strong in the spectra from emersed electrodes. The difference between the spectra from surfaces in the two environments is discussed in terms of absorption of the signal by the overlaying water layer and the hydrophobic nature of chemisorbed xanthate.
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View more >Raman spectroscopy has been applied to the investigation of the interaction of ethyl xanthate with silver and copper surfaces. SERS spectra recorded in situ and on emersed electrodes have confirmed the conclusion of previous studies that ethyl xanthate is chemisorbed on these metals at potentials below the reversible value for the corresponding metalmetal ethyl xanthate couple without change in its molecular integrity. The stretching vibrations of the hydrocarbon groups in the xanthate molecule were found to be suppressed when SERS spectra were recorded in situ, but the corresponding rocking and deformation vibrations were unaffected. The hydrocarbon stretching vibrations were strong in the spectra from emersed electrodes. The difference between the spectra from surfaces in the two environments is discussed in terms of absorption of the signal by the overlaying water layer and the hydrophobic nature of chemisorbed xanthate.
View less >
Journal Title
Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume
137
Issue
1-3
Subject
Physical sciences
Chemical sciences
Engineering