Photoelectrochemical system and a method of using the same

Details Photoelectrochemical system and a method of using the same Photoelectrochemical system and a method of using the same

1981-08-14

1983-05-03

Weisstuch, Aaron

Chemistry: electrical and wave energy

Processes and products

204 72, 204128, 204129, 204158R, 204252, 204DIG3, 429111, C25B 300, C25B 110, C25B 124

Patent

active

043819788

ABSTRACT:
A photoelectrochemical system for conducting endoergic chemical processes driven by light energy. This system consists essentially of an illuminated halfcell and a darkened halfcell joined via electrodes and an external circuit to allow for the transport of electrons. Also, the said halfcells are joined by an ion conducting junction so as to allow for the transport of ions. The illuminated halfcell contains a photosensitizer, an electron relay substance and a catalyst, and the darkened halfcell may contain a second electron relay and a catalyst. Illumination with visible light results in the simultaneous and separate generation of oxidation and reduction products.

REFERENCES:
patent: 4045315 (1977-08-01), Ryason
patent: 4105517 (1978-08-01), Ryason
patent: 4211621 (1980-07-01), Porter
patent: 4215182 (1980-07-01), Ang et al.
patent: 4219392 (1980-08-01), Halmann
F. R. Fan et al., "Semiconductor Electrodes 27, The p- and n-GaAs-N,N'-Dimethyl-4,4' Bipyridinium System", J. Am. Chem. Soc. vol. 102, pp. 1488-1492 (1980).
A. J. Bard, "Photoelectrochemistry", Science, vol. 207, pp. 139-144 (1980).
R. Memming, "Solar Energy Conversion by Photoelectrochemical Processes," Electrochimica Acta, vol. 25, pp. 77-88 (1980).
Chemical & Engineering News, Nov. 17, 1980, pp. 61-62.

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