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Reductive precipitation of metals photosensitized by tin and antimony porphyrins

United States Patent

September 30, 2003
View the Complete Patent at the US Patent & Trademark Office
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A method for reducing metals using a tin or antimony porphyrin by forming an aqueous solution of a tin or antimony porphyrin, an electron donor, such as ethylenediaminetetraaceticacid, triethylamine, triethanolamine, and sodium nitrite, and at least one metal compound selected from a uranium-containing compound, a mercury-containing compound, a copper-containing compound, a lead-containing compound, a gold-containing compound, a silver-containing compound, and a platinum-containing compound through irradiating the aqueous solution with light.
Shelnutt; John A. (Tijeras, NM), Gong; Weiliang (Albuquerque, NM), Abdelouas; Abdesselam (Nantes, FR), Lutze; Werner (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
09/ 846,593
April 30, 2001
This invention was made with Government support under Contract No. DE-AC04-94AL85000 awarded by the Department of Energy. The Government has certain rights in the invention.