A molecular water-reduction catalyst: Surface derivatization of TiO sub 2 colloids and suspensions with a platinum complex
Journal Article
·
· Journal of Physical Chemistry; (United States)
- National Renewable Energy Lab., Golden, CO (United States)
The authors report here the first example of the surface derivatization of a semiconductor with a platinum bipyridyl complex. This complex was formed in situ by either direct excitation or photosensitization of TiO{sub 2} particles in the presence of (Pt(bpy){sub 2}){sup 2+} (where bpy = 2,2{prime}-bipyridine) and a sacrificial electron donor in aqueous media. Optical and x-ray photoelectron spectroscopy (XPS) measurements provided detailed information about the nature of the complex and its attachment to the surface of TiO{sub 2}. The surface complex exhibited relatively high activity in the photoreduction of water compared with that of conventional platinized TiO{sub 2} systems.
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 7017192
- Journal Information:
- Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 95:23; ISSN 0022-3654; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ABSORPTION SPECTROSCOPY
AZINES
BIPYRIDINES
CATALYSIS
CATALYSTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COLLOIDS
COMPLEXES
DATA
DISPERSIONS
ELECTRON SPECTROSCOPY
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOELECTRON SPECTROSCOPY
PLATINUM COMPLEXES
PYRIDINES
REDUCTION
SPECTRA
SPECTROSCOPY
SUSPENSIONS
SYNTHESIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
VALENCE
VISIBLE SPECTRA
WATER
X-RAY SPECTROSCOPY
400500* -- Photochemistry
ABSORPTION SPECTROSCOPY
AZINES
BIPYRIDINES
CATALYSIS
CATALYSTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COLLOIDS
COMPLEXES
DATA
DISPERSIONS
ELECTRON SPECTROSCOPY
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOELECTRON SPECTROSCOPY
PLATINUM COMPLEXES
PYRIDINES
REDUCTION
SPECTRA
SPECTROSCOPY
SUSPENSIONS
SYNTHESIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
VALENCE
VISIBLE SPECTRA
WATER
X-RAY SPECTROSCOPY