Yayınlanmış 1 Ocak 2018 | Sürüm v1
Dergi makalesi Açık

A Noble-Metal-Free Heterogeneous Photosensitizer-Relay Catalyst Triad That Catalyzes Water Oxidation under Visible Light

  • 1. Ankara Univ, Fac Engn, Dept Engn Phys, TR-06100 Ankara, Turkey
  • 2. Gazi Univ, Fac Sci, Dept Chem, TR-06500 Ankara, Turkey
  • 3. Bilkent Univ, Fac Sci, Dept Chem, TR-06800 Ankara, Turkey
  • 4. Dokuz Eylul Univ, Fac Sci, Dept Chem, Tinaztepe Campus, Izmir, Turkey
  • 5. Gebze Tech Univ, Dept Chem, TR-41400 Kocaeli, Turkey

Açıklama

An entirely earth-abundant chromophore-relay water oxidation catalyst triad system, which is robust and efficient at neutral pH, is presented. The synthesis involves the coordination of a porphyrin derivative to a bridging Fe(CN)(5) group, which is then reacted with Co ions to prepare a covalently linked chromophore-Prussian blue analogue assembly. Light-driven water oxidation studies in the presence of an electron scavenger indicate that the triad is active and it maintains a steady activity for at least three hours. Transient absorption experiments and computational studies reveal that the Fe(CN)(5) group is more than a linker as it takes part in electron-transfer and co-operates with porphyrin in the charge separation process.

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