Photochemical hydrogen production with platinized suspensions of cadmium sulfide and cadmium zinc sulfide modified by silver sulfide
An efficient hydrogen production can be achieved by irradiated suspensions of platinized CdS in solutions of S/sup 2 -/ and/or SO/sub 3//sup 2 -/ ions. However, the photocatalytic activity of CdS powders strongly depends on their specific surface area. However, coprecipitation of CdS with about 0.5-3 wt% silver sulfide or surface modification of CdS with a large specific surface area by silver ions permitted preparation of very active platinized photocatalysts. The enhancement of activity is not limited to the absorption range of CdS, but also results from a significant extension of the spectral response up to about 620 nm. Further improvement of the photoactivity can be achieved by doping the Ag/sub 2/S activated CdS powders with zinc sulfide. 77 references, 17 figures.
- Research Organization:
- Central Research Labs., Basel, Switzerland
- OSTI ID:
- 5965955
- Journal Information:
- J. Phys. Chem.; (United States), Vol. 90:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANIONS
SOLVENT PROPERTIES
CADMIUM SULFIDES
PHOTOCHEMICAL REACTIONS
HYDROGEN
CHEMICAL PREPARATION
SULFIDES
SULFITES
CADMIUM COMPLEXES
COLLOIDS
EXPERIMENTAL DATA
PLATINUM
SILVER SULFIDES
ZINC SULFIDES
CADMIUM COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
COMPLEXES
DATA
DISPERSIONS
ELEMENTS
INFORMATION
INORGANIC PHOSPHORS
IONS
METALS
NONMETALS
NUMERICAL DATA
OXYGEN COMPOUNDS
PHOSPHORS
PLATINUM METALS
SILVER COMPOUNDS
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZINC COMPOUNDS
080106* - Hydrogen- Production- Biosynthesis & Photochemical Processes
400500 - Photochemistry