4.3 Article

Electrocatalytic O2 Evolution from Water at an ITO Electrode Modified with [Ru(terpy){4,4′-(CH2PO3H2)2-2,2′-bpy}(OH2)]2+: Evidence for a Unimolecular Pathway

Journal

CHEMISTRY LETTERS
Volume 39, Issue 11, Pages 1146-1148

Publisher

CHEMICAL SOC JAPAN
DOI: 10.1246/cl.2010.1146

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Funding

  1. PRESTO, Japan Science and Technology Agency (JST)
  2. Ministry of Education. Culture, Sports, Science and Technology of Japan [21750065]
  3. Grants-in-Aid for Scientific Research [21750065] Funding Source: KAKEN

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An ITO (indium tin oxide) electrode modified with [Ru(terpy)-{4,4'-(CH2PO3H2)(2)-2,2'-bpy}(OH2)](2+) was prepared to gain insight into the mechanism of O-2 evolution from water catalyzed by a series of mononuclear aquaruthenium complexes, such as [Ru-(terpy)(bpy)(OH2)](2+) The modified ITO electrode showed a clear decrease in overpotential for O-2 evolution (1 35 V in an aqueous 0 1 M Na2SO4/H2SO4 solution, pH 4 0), indicating that the O-2 evolution proceeds in a ummolecular fashion without having any intermolecular associations

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