Electrochemical device

Electrolysis: processes – compositions used therein – and methods – Electrolytic material treatment – Organic

Reexamination Certificate

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C205S742000, C205S759000, C204S242000, C204S271000, C204S290120

Reexamination Certificate

active

07824537

ABSTRACT:
An electrochemical device including: (a) a semiconductor layer, wherein the semiconductor is silicon or silicon carbide, and where the layer has a thickness from 1 to 1000 μm; (b) a TiO2layer on the semiconductor layer, where the layer may include an alkaline earth oxide MO up to an amount where the layer is MtiO3, and where the layer has a thickness from 5 nm to 1 mm; (c) a grid of inert metal on the TiO2layer, arranged so as to be able to apply a electric field across the TiO2layer; and (d) an ohmic contact on the semiconductor layer.

REFERENCES:
patent: 5395522 (1995-03-01), Melanson et al.
patent: 198 44 329 (2000-03-01), None
patent: WO2004/081536 (2004-09-01), None
Butterfield et al. “Water diinfection using an immobilised titanium dioxde film in a photochemical reactor with electric field enhancement”, 1997. Water Res. vol. 31, No. 3, pp. 675-677.
T. P. Curtis et al., “Fate of Cryptosporidium oocysts in an immobilized titanium dioxide reactor with electric field enhancement”,Water Research, vol. 36, No. 9, May 2002, pp. 2410-2413.
G. Patemarakis et al., “Disinfection of Water by Electrochemical Treatment”,Water Research, vol. 24, No. 12, Dec. 1990, pp. 1491-1496.
J. Rodriguez et al., “Photo-electrocatalytic degradation of 4-chlorophenol over sputter deposited Ti oxide films”,Thin Solid Films, 360, 2000, pp. 250-255.
G. R. Torres et al., “Photoelectrochemical Study of Nitrogen-Doped Titanium Dioxide for Water Oxidation”,J. Phys. Chem. B, vol. 108, No. 19, 2004, pp. 5995-6003.
P. A. Christensen et al., “A novel electrochemical device for the disinfection of fluids by OH radicals”,Chem. Commun., 2006, pp. 4022-4023.

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