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

Chandra Debraj | Zendy; Abe Naoto | Zendy; Takama Daisuke | Zendy; Saito Kenji | Zendy; Yui Tatsuto | Zendy; Yagi Masayuki | Zendy

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

Author(s) -

Chandra Debraj,

Abe Naoto,

Takama Daisuke,

Saito Kenji,

Yui Tatsuto,

Yagi Masayuki

Publication year - 2015

Publication title -

chemsuschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.412

H-Index - 157

eISSN - 1864-564X

pISSN - 1864-5631

DOI - 10.1002/cssc.201402911

Subject(s) - mesoporous material , materials science , calcination , chemical engineering , anode , copolymer , electrocatalyst , mesoporous silica , porosity , coating , thin film , nanotechnology , catalysis , electrochemistry , electrode , chemistry , organic chemistry , polymer , composite material , engineering

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.

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