title: Open pore architecture of an ordered mesoporous IrO2 thin film for highly efficient electrocatalytic water oxidation.
abstract: We report the first accessible channel-like open pore architecture of ordered 2D hexagonal mesoporous IrO2 films and its utilization as an efficient anode for electrocatalytic water oxidation. A well-ordered mesostructure of circa 7 nm pores were obtained by a facile one-pot soft-templating strategy, employing a [Ir(OH)6](2-) precursor stabilized by a triblock copolymer "Pluronic F127" as a pore-directing template. A mesoporous IrO2 film calcined at 400 °C (∼70 nm thick) affords a high surface area of 512 m(2)  cm(-3) and 2 times higher O2 evolution during the electrocatalytic water oxidation relative to an untemplated IrO2 coating film.
authors: Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 950-2181 (Japan). yagi@eng.niigata-u.ac.jp.
authors: Debraj
authors: D
authors: Chandra
authors: Naoto
authors: N
authors: Abe
authors: Daisuke
authors: D
authors: Takama
authors: Kenji
authors: K
authors: Saito
authors: Tatsuto
authors: T
authors: Yui
authors: Masayuki
authors: M
authors: Yagi
mesh_terms: D002384:Catalysis; D004563:Electrochemistry; D007495:Iridium / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D010084:Oxidation-Reduction; D016062:Porosity; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; C044458:iridium oxide; D007495:Iridium
keywords: electrocatalysis; iridium oxide; mesoporous materials; nanostructure engineering; water oxidation