Surface-enhanced resonance Raman study of the photoreduction of methylviologen on a p-InP semiconductor electrode
The redox reactions of methylviologen (MV) at a silver electrode and at a p-InP electrode have been studied by cyclic voltammetry and Raman spectroscopy. By deposition of a silver island overlayer onto a p-InP semiconductor electrode the surface enhancement effect was obtained, allowing the MV reduction products formed at the semiconductor electrode to be monitored in situ. The photovoltaic response on p-InP electrode was not perturbed by the presence of the silver overlayer. Surface-enhanced resonance Raman (SERR) spectroscopy has verified the adsorption of the products from the reduction reactions MV/sup 2 +/ + e/sup -/ ..-->.. MV/sup +/. and MV/sup +/. + e/sup -/ ..-->.. MV/sup 0/. The Raman spectrum of one-electron and two-electron (MV/sup 0/) reduced methylviologen was obtained by exhaustive electrolysis in acetonitrile solution to provide an assignment of the surface spectra. 31 references, 4 figures.
- Research Organization:
- Univ. of Nebraska, Lincoln
- DOE Contract Number:
- FG02-84ER13261
- OSTI ID:
- 5826018
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:6; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
The effects of surface energetics and surface oxide layers on the cyclic voltammetry of metallocenes at nonilluminated p-InP electrodes
The effects of surface energetics on the cyclic voltammetry of metallocenes at nonilluminated n-InP electrodes
Related Subjects
400201 -- Chemical & Physicochemical Properties
400500* -- Photochemistry
ACETONITRILE
ADSORPTION
CATIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
DATA
ELECTRODES
ELEMENTS
EXPERIMENTAL DATA
INDIUM COMPOUNDS
INDIUM PHOSPHIDES
INELASTIC SCATTERING
INFORMATION
IONS
LASER SPECTROSCOPY
MATERIALS
METALS
NITRILES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
P-TYPE CONDUCTORS
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PNICTIDES
RAMAN SPECTROSCOPY
REACTION INTERMEDIATES
REDUCTION
RESONANCE SCATTERING
SCATTERING
SEMICONDUCTOR MATERIALS
SILVER
SORPTION
SPECTROSCOPY
SURFACE PROPERTIES
TRANSITION ELEMENTS
VOLTAMETRY