Use of chemically derivatized n-type silicon photoelectrodes in aqueous media: photooxidation of iodide, hexacyanoiron(II), and hexaammineruthenium(II) at ferrocene-derivatized photoanodes
A procedure is described for the chemical derivatization of the surface of n-type semiconductor photoanodes to yield photosensitive interfaces for use in a large number of thermodynamically uphill oxidation processes. (1,1'-ferrocenediyl)dichlorosilane was used to derivatize n-type Si to yield a photoanode that can be used under conditions where the naked (nonderivatized) n-type Si undergoes photoanodic corrosion yielding an insulating SiO/sub x/ surface layer. The results of use of this derivatized n-type Si in aqueous solutions to investigate the photooxidation of iodide, hexacyanoiron(II), and hexaammineruthenium(II) are reported. This type photoelectrode has an operation range that is nearly ideal from the point of solar energy conversion. (BLM)
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge
- OSTI ID:
- 5140900
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 102:10; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
400500 -- Photochemistry
ANODES
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
DATA
DIENES
DISPERSIONS
EFFICIENCY
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
EQUIPMENT
EXPERIMENTAL DATA
FABRICATION
FERROCENE
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
INFORMATION
IODIDES
IODINE COMPOUNDS
IRON COMPLEXES
MATERIALS
MIXTURES
N-TYPE CONDUCTORS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
PHOTOANODES
PHOTOCHEMISTRY
PHOTOELECTROCHEMICAL CELLS
POLYENES
REDOX REACTIONS
RUTHENIUM COMPLEXES
SEMICONDUCTOR MATERIALS
SEMIMETALS
SILICON
SOLAR EQUIPMENT
SOLUTIONS
SURFACES
TRANSITION ELEMENT COMPLEXES
VOLTAMETRY