Water splitting-biosynthetic system with CO2 reduction efficiencies exceeding photosynthesis

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Water splitting-biosynthetic system with CO2 reduction efficiencies exceeding photosynthesis

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Title: Water splitting-biosynthetic system with CO2 reduction efficiencies exceeding photosynthesis
Author: Liu, Chong; Colon, Brendan Cruz; Ziesack, Marika; Silver, Pamela A.; Nocera, Daniel

Note: Order does not necessarily reflect citation order of authors.

Citation: Liu, C., B. C. Colon, M. Ziesack, P. A. Silver, and D. G. Nocera. 2016. “Water Splitting-Biosynthetic System with CO2 Reduction Efficiencies Exceeding Photosynthesis.” Science 352 (6290) (June 2): 1210–1213. doi:10.1126/science.aaf5039.
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Abstract: Artificial photosynthetic systems can store solar energy and chemically reduce CO2. We developed a hybrid water splitting–biosynthetic system based on a biocompatible Earth-abundant inorganic catalyst system to split water into molecular hydrogen and oxygen (H2 and O2) at low driving voltages. When grown in contact with these catalysts, Ralstonia eutropha consumed the produced H2 to synthesize biomass and fuels or chemical products from low CO2 concentration in the presence of O2. This scalable system has a CO2 reduction energy efficiency of ~50% when producing bacterial biomass and liquid fusel alcohols, scrubbing 180 grams of CO2 per kilowatt-hour of electricity. Coupling this hybrid device to existing photovoltaic systems would yield a CO2 reduction energy efficiency of ~10%, exceeding that of natural photosynthetic systems.
Published Version: doi:10.1126/science.aaf5039
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:27304973
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