Journal
CHEMSUSCHEM
Volume 8, Issue 5, Pages 795-799Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201402911
Keywords
electrocatalysis; iridium oxide; mesoporous materials; nanostructure engineering; water oxidation
Funding
- JST PRESTO program
- Ministry of Education, Culture, Sports, Science and Technology [24350028]
- JSPS
- Grants-in-Aid for Scientific Research [12F02031, 24107003, 15F14909, 26790012] Funding Source: KAKEN
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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 7nm pores were obtained by a facile one-pot soft-templating strategy, employing a [Ir(OH)(6)](2-) precursor stabilized by a triblock copolymer PluronicF127 as a pore-directing template. A mesoporous IrO2 film calcined at 400 degrees C (approximate to 70nm thick) affords a high surface area of 512m(2)cm(-3) and 2times higher O-2 evolution during the electrocatalytic water oxidation relative to an untemplated IrO2 coating film.
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