Open Pore Architecture of an Ordered Mesoporous IrO 2 Thin Film for Highly Efficient Electrocatalytic Water Oxidation

Abstract We report the first accessible channel‐like open pore architecture of ordered 2D hexagonal mesoporous IrO 2 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‐templatin...

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Published inChemSusChem Vol. 8; no. 5; pp. 795 - 799
Main Authors Chandra, Debraj, Abe, Naoto, Takama, Daisuke, Saito, Kenji, Yui, Tatsuto, Yagi, Masayuki
Format Journal Article
LanguageEnglish
Published 01.03.2015
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Summary:Abstract We report the first accessible channel‐like open pore architecture of ordered 2D hexagonal mesoporous IrO 2 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 IrO 2 film calcined at 400 °C (∼70 nm thick) affords a high surface area of 512 m 2  cm −3 and 2 times higher O 2 evolution during the electrocatalytic water oxidation relative to an untemplated IrO 2 coating film.
ISSN:1864-5631
1864-564X
DOI:10.1002/cssc.201402911