Photoelectrochemistry in particulate systems. 3. Phototransformations in the colloidal TiO/sub 2/-thiocyanate system
Journal Article
·
· Langmuir; (United States)
OSTI ID:5906110
Association of SCN/sup -/ with TiO/sub 2/ colloids in acetonitrile resulted in the appearance of an absorption band with a maximum around 285 nm. The apparent association constant as measured by a Benesi-Hildebrand plot was 350 M/sup -1/. Generation of (SCN)/sub 2//sup -/. was observed within the pulse duration (<8 ns) when the thiocyanate complex of TiO/sub 2/ in acetonitrile to 337-nm laser pulse excitation. The quantum yield for the production of (SCN/sub 2//sup -/. was determined to be 0.04. With the aid of the laser flash photolysis, it has been demonstrated that one can carry out both the oxidation of SCN/sup -/ and the reduction of oxazine dye on the semiconductor particles simultaneously. Effective capture of the holes and electrons enhanced the efficiency of the photoelectrochemical oxidation and reduction processes at these microelectrodes. 22 references, 6 figures, 1 table.
- Research Organization:
- Univ. of Notre Dame, IN
- OSTI ID:
- 5906110
- Journal Information:
- Langmuir; (United States), Journal Name: Langmuir; (United States) Vol. 1:5; ISSN LANGD
- Country of Publication:
- United States
- Language:
- English
Similar Records
Titanium dioxide photooxidation of thiocyanate. (SCN) sub 2 sup sm bullet minus studied by diffuse reflectance flash photolysis
Photoelectrochemistry in particulate systems. 6. Electron-transfer reactions of small CdS colloids in acetonitrile
Capped semiconductor colloids. Synthesis and photoelectrochemical behavior of TiO{sub 2}-capped SnO{sub 2} nanocrystallites
Journal Article
·
Thu May 31 00:00:00 EDT 1990
· Journal of Physical Chemistry; (USA)
·
OSTI ID:6518541
Photoelectrochemistry in particulate systems. 6. Electron-transfer reactions of small CdS colloids in acetonitrile
Journal Article
·
Wed Jan 14 23:00:00 EST 1987
· J. Phys. Chem.; (United States)
·
OSTI ID:7101113
Capped semiconductor colloids. Synthesis and photoelectrochemical behavior of TiO{sub 2}-capped SnO{sub 2} nanocrystallites
Journal Article
·
Thu Jun 01 00:00:00 EDT 1995
· Journal of Physical Chemistry
·
OSTI ID:68005
Related Subjects
36 MATERIALS SCIENCE
360605* -- Materials-- Radiation Effects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
ACETONITRILE
ANTITHYROID DRUGS
BETA DECAY
CARBONIC ACID DERIVATIVES
CHALCOGENIDES
CHEMICAL REACTIONS
COLLOIDS
DATA
DECAY
DECOMPOSITION
DISPERSIONS
DRUGS
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE DECAY
EXPERIMENTAL DATA
HOLES
HORMONE ANTAGONISTS
INFORMATION
IRRADIATION
LASER RADIATION
NITRILES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PULSED IRRADIATION
RADIATIONS
SEMICONDUCTOR DEVICES
THIOCYANATES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
360605* -- Materials-- Radiation Effects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
ACETONITRILE
ANTITHYROID DRUGS
BETA DECAY
CARBONIC ACID DERIVATIVES
CHALCOGENIDES
CHEMICAL REACTIONS
COLLOIDS
DATA
DECAY
DECOMPOSITION
DISPERSIONS
DRUGS
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE DECAY
EXPERIMENTAL DATA
HOLES
HORMONE ANTAGONISTS
INFORMATION
IRRADIATION
LASER RADIATION
NITRILES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PULSED IRRADIATION
RADIATIONS
SEMICONDUCTOR DEVICES
THIOCYANATES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS