Self-Assembly of Active IrO2 Colloid Catalyst on an ITO Electrode for Efficient Electrochemical Water Oxidation
- 1 November 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry B
- Vol. 109 (46) , 21489-21491
- https://doi.org/10.1021/jp0550208
Abstract
Active catalysts for water oxidation to evolve O2 are required for the construction of artificial photosynthetic devices that are expected to be promising energy-providing systems in the future. The citrate-stabilized IrO2 colloid was self-assembled onto an indium tin oxide (ITO) electrode to form a monolayer of the colloidal IrO2 particles when it was dipped in the colloid solution. The self-assembly could be achieved by a chemical interaction between carboxylate groups on the citrate stabilizer and hydroxyl groups on the ITO surface to form ester bonds. Efficient electrocatalysis for water oxidation was demonstrated using the electrode modified by the self-assembled IrO2 colloid to yield the highest turnover frequency ((2.3−2.5) × 104 h-1) of IrO2 in the hitherto-reported catalysts for electrochemical water oxidation.Keywords
This publication has 24 references indexed in Scilit:
- Mechanism of Water Oxidation by the μ-Oxo Dimer [(bpy)2(H2O)RuIIIORuIII(OH2)(bpy)2]4+Journal of the American Chemical Society, 2000
- Catalytic Activity of Tri(μ-chloro)-Bridged Dinuclear Ruthenium Complex Confined in a Polymer Membrane as an Artificial Model of Photosynthetic Oxygen Evolving CenterLangmuir, 1999
- Catalytic activity of [(bpy)2(H2O)Ru–O–Ru(H2O)(bpy)2]4+ for four-electron water oxidationJournal of Molecular Catalysis A: Chemical, 1999
- Activity analysis of a water oxidation catalyst adsorbed on an inorganic particle matrixJournal of the Chemical Society, Faraday Transactions, 1996
- Activity analysis of a water oxidation catalyst immobilized in a polymer membraneJournal of the Chemical Society, Faraday Transactions, 1996
- Activity Analysis of Electrochemical Water Oxidation Catalyst Confined in a Coated-Polymer MembraneThe Journal of Physical Chemistry, 1996
- Water oxidation by .mu.-oxobis[bis(bipyridine)oxoruthenium(V)](4+). An oxygen-labeling studyInorganic Chemistry, 1990
- Electrocatalytic oxygen evolution on reactively sputtered electrochromic iridium oxide filmsNature, 1979
- Colloidal Redox Catalysts for Evolution of Oxygen and for Light‐Induced Evolution of Hydrogen from WaterAngewandte Chemie International Edition in English, 1979
- Oxygen Evolution from Water via Redox CatalysisAngewandte Chemie International Edition in English, 1978