4.8 Article

Polyethylenimine-Enhanced Electrocatalytic Reduction of CO2 to Formate at Nitrogen-Doped Carbon Nanomaterials

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 136, Issue 22, Pages 7845-7848

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ja5031529

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Funding

  1. UNC EFRC Center for Solar Fuels, an Energy Frontier Research Center - U.S. Department of Energy Office of Science, Office of Basic Energy Sciences [DE-SC0001011]
  2. National Science Foundation [DMR-1106173]
  3. Division Of Materials Research
  4. Direct For Mathematical & Physical Scien [1106173] Funding Source: National Science Foundation

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Nitrogen-doped carbon nanotubes are selective and robust electrocatalysts for CO2 reduction to formate in aqueous media without the use of a metal catalyst. Polyethylenimine (PEI) functions as a co-catalyst by significantly reducing catalytic overpotential and increasing current density and efficiency. The co-catalysis appears to help in stabilizing the singly reduced intermediate CO2 center dot- and concentrating CO2 in the PEI overlayer.

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