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Method to reduce CO.sub.2 to CO using plasmon-enhanced photocatalysis

United States Patent

9,738,529
August 22, 2017
View the Complete Patent at the US Patent & Trademark Office
Described is a method of reducing CO.sub.2 to CO using visible radiation and plasmonic photocatalysts. The method includes contacting CO.sub.2 with a catalyst, in the presence of H.sub.2, wherein the catalyst has plasmonic photocatalytic reductive activity when exposed to radiation having a wavelength between 380 nm and 780 nm. The catalyst, CO.sub.2, and H.sub.2 are exposed to non-coherent radiation having a wavelength between 380 nm and 780 nm such that the catalyst undergoes surface plasmon resonance. The surface plasmon resonance increases the rate of CO.sub.2 reduction to CO as compared to the rate of CO.sub.2 reduction to CO without surface plasmon resonance in the catalyst.
Huber; George W. (Middleton, WI), Upadhye; Aniruddha A. (Madison, WI), Kim; Hyung Ju (Madison, WI), Ro; Insoo (Madison, WI), Tejedor-Anderson; M. Isabel (Madison, WI)
Wisconsin Alumni Research Foundation (Madison, WI)
14/ 248,729
20150291434
April 9, 2014
FEDERAL FUNDING STATEMENT This invention was made with government support awarded under DE-AR0000329 awarded by the US Department of Energy. The government has certain rights in the invention.