Photosensitization of titanium(IV) oxide with tris(2,2'-bipyridine)ruthenium(II) chloride. Surface states of titanium(IV) oxide
Journal Article
·
· J. Phys. Chem.; (United States)
Investigation of the photosensitization of single-crystal TiO/sub 2/ by (Ru(bpy)/sub 3/)Cl/sub 2/ (where bpy = 2,2'-bipyridine) has revealed the existence of a slow-rise-time cathodic photocurrent in addition to the fast-rise-time anodic photocurrent reported by Clark and Sutin. Phenomenological analysis of the experiment provides a satisfactory quantitative explanation based on a modulation of an ongoing dark current by energy transfer from the dye to the solid. Two new experiments and an extensive literature implicate surface O/sub 2//sup -/ ions as the molecular species responsible for the slow kinetics. Some implications of these results for the photoelectrolysis of water by sunlight are also indicated.
- Research Organization:
- Inorganic Chemistry Lab., Oxford, England
- OSTI ID:
- 5673448
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 83:25; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
08 HYDROGEN
080101* -- Hydrogen-- Production-- Electrolysis
14 SOLAR ENERGY
140500 -- Solar Energy Conversion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
AZINES
BIPYRIDINES
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
DATA
DATA FORMS
ELECTROLYSIS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INFORMATION
ISOLATED VALUES
LYSIS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTROLYSIS
PHOTOSENSITIVITY
PYRIDINES
RUTHENIUM CHLORIDES
RUTHENIUM COMPOUNDS
SENSITIVITY
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
WATER
080101* -- Hydrogen-- Production-- Electrolysis
14 SOLAR ENERGY
140500 -- Solar Energy Conversion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
AZINES
BIPYRIDINES
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
DATA
DATA FORMS
ELECTROLYSIS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INFORMATION
ISOLATED VALUES
LYSIS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTROLYSIS
PHOTOSENSITIVITY
PYRIDINES
RUTHENIUM CHLORIDES
RUTHENIUM COMPOUNDS
SENSITIVITY
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
WATER