Selective CO2 Reduction Catalyzed by Single Cobalt Sites on Carbon Nitride under Visible-Light Irradiation.

Academic Article


  • Framework nitrogen atoms of carbon nitride (C3N4) can coordinate with and activate metal sites for catalysis. In this study, C3N4 was employed to harvest visible light and activate Co2+ sites, without the use of additional ligands, in photochemical CO2 reduction. Photocatalysts containing single Co2+ sites on C3N4 were prepared by a simple deposition method and demonstrated excellent activity and product selectivity toward CO formation. A turnover number of more than 200 was obtained for CO production using the synthesized photocatalyst under visible-light irradiation. Inactive cobalt oxides formed at relatively high cobalt loadings but did not alter product selectivity. Further studies with X-ray absorption spectroscopy confirmed the presence of single Co2+ sites on C3N4 and their important role in achieving selective CO2 reduction.
  • Authors

  • Huang, Peipei
  • Huang, Jiahao
  • Pantovich, Sebastian A
  • Carl, Alexander D
  • Fenton, Thomas G
  • Caputo, Christine
  • Grimm, Ronald L
  • Frenkel, Anatoly I
  • Li, Gonghu
  • Status

    Publication Date

  • November 28, 2018
  • Has Subject Area

    Digital Object Identifier (doi)

    Pubmed Id

  • 30415539
  • Start Page

  • 16042
  • End Page

  • 16047
  • Volume

  • 140
  • Issue

  • 47