Photoelectrochemistry in particulate systems. 6. Electron-transfer reactions of small CdS colloids in acetonitrile
Journal Article
·
· J. Phys. Chem.; (United States)
Small colloidal CdS particles (particle diameter < 25-42 A) have been prepared in acetonitrile and their absorption and emission properties characterized. A transient bleaching was observed when CdS colloids were subjected to bandgap excitation with a 355-nm laser pulse. The recovery of the bleaching which consisted of at least two components has been attributed to the recombination of trapped charge carriers and to the process of anodic corrosion. The red emission of CdS colloid can be quenched with an electron scavenger such as methylene blue. The quantum yield for the reduction of oxazine and thiazine dyes varied from 0.04 to 0.08 and was dependent on the reduction potential of the dye. The electron-transfer reactions of CdS colloids have been investigated by using nanosecond laser flash photolysis and microwave absorption techniques.
- Research Organization:
- Univ. of Notre Dame, IN
- OSTI ID:
- 7101113
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:2; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
400500 -- Photochemistry
ABSORPTION SPECTROSCOPY
ACETONITRILE
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
COLLOIDS
DATA
DECOMPOSITION
DISPERSIONS
ELECTROCHEMISTRY
ELECTRON TRANSFER
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC PHOSPHORS
LASERS
MICROWAVE SPECTRA
NITRILES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PARTICLE SIZE
PHOSPHORS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOLYSIS
PULSE TECHNIQUES
SIZE
SPECTRA
SPECTROSCOPY
SULFIDES
SULFUR COMPOUNDS
VISIBLE SPECTRA
WATER
400400* -- Electrochemistry
400500 -- Photochemistry
ABSORPTION SPECTROSCOPY
ACETONITRILE
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
COLLOIDS
DATA
DECOMPOSITION
DISPERSIONS
ELECTROCHEMISTRY
ELECTRON TRANSFER
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC PHOSPHORS
LASERS
MICROWAVE SPECTRA
NITRILES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PARTICLE SIZE
PHOSPHORS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOLYSIS
PULSE TECHNIQUES
SIZE
SPECTRA
SPECTROSCOPY
SULFIDES
SULFUR COMPOUNDS
VISIBLE SPECTRA
WATER