Journal
SCIENCE
Volume 354, Issue 6313, Pages 741-743Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aah6886
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Funding
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division [DE-SC-0016026]
- University of Illinois at Urbana-Champaign
- American Association for the Advancement of Science Milligan Mason Award for Women in the Chemical Sciences
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Nitrate and perchlorate have considerable use in technology, synthetic materials, and agriculture; as a result, they have become pervasive water pollutants. Industrial strategies to chemically reduce these oxyanions often require the use of harsh conditions, but microorganisms can efficiently reduce them enzymatically. We developed an iron catalyst inspired by the active sites of nitrate reductase and (per) chlorate reductase enzymes. The catalyst features a secondary coordination sphere that aids in oxyanion deoxygenation. Upon reduction of the oxyanions, an iron(III)-oxo is formed, which in the presence of protons and electrons regenerates the catalyst and releases water.
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