Detection of interfacial hydroxyl ions (OH− AND OD−) on Ag electrodes by surface enhanced Raman scattering |
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| Authors: | T.T. Chen R.K. Chang B.L. Laube |
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| Affiliation: | Yale University, Section of Applied Physics and Center for Laser Diagnostics, New Haven, Connecticut, 06520, USA;United Technologies Research Center, East Hartford, Connecticut 06108, USA |
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| Abstract: | The stretching mode of hydroxyl ions (OH? and OD?), which are located at the Ag electrode-electrolyte interface, has been observed. Two distinct peaks in the surface enhanced Raman spectra of interfacial hydroxyl ions were observed. The assignment of Raman peaks to hydroxyl ions was confirmed by adding KOH or HCl to the electrolyte or by electrochemically generating hydroxyl ions and hydrogen gas at the electrode interface. |
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