Hybrid Carbon Dioxide Reduction Photocatalysts Consisting of Macrocyclic Cobalt(III) Complexes Deposited on Semiconductor Surfaces

Academic Article


  • AbstractHybrid photocatalysts can be prepared by coupling metal‐ligand complexes with light‐harvesting semiconductors. It is often challenging and time consuming to derivatize ligands with anchoring groups to effectively attach onto surfaces. In this study, we synthesized hybrid carbon dioxide reduction photocatalysts by directly depositing two macrocyclic Co(III) complexes on three different semiconductor surfaces (TiO2, N−Ta2O5 and C3N4). The resulting hybrid photocatalysts were characterized with various techniques and tested in CO2 reduction reactions under different light conditions. Excellent visible‐light CO2‐reduction activity was obtained using C3N4 as the light‐harvesting semiconductor. Density functional theory calculations were conducted to help understand interactions between the cobalt complexes with a model TiO2 surface.
  • Authors

  • Huang, Peipei
  • Pantovich, Sebastian A
  • Okolie, Norbert O
  • Deskins, N Aaron
  • Li, Gonghu
  • Status

    Publication Date

  • June 2020
  • Published In

  • Keywords

  • carbon dioxide reduction
  • cobalt
  • macrocycles
  • photocatalysis
  • semiconductors
  • Digital Object Identifier (doi)

    Start Page

  • 420
  • End Page

  • 426
  • Volume

  • 4
  • Issue

  • 6