Oxidized iridium nanodendrites as catalysts for oxygen evolution reactions

Woong Hee Lee, Hansung Kim

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Iridium nanodendrites were synthesized using tetradecyltrimethyl ammonium bromide (TTAB) as an organic capping agent, and the electrocatalytic activity toward oxygen evolution reaction (OER) was evaluated. X-ray photoelectron spectroscopy revealed that an anodically grown iridium oxide film was created on the Ir dendrite through a repeated potential sweep between 0.04 and 1.54 V vs. SHE. The highly branched structure of the Ir dendrites with a particle size of ∼ 10 nm provides an increased active facet area that is available for OER in comparison to a commercial Ir catalyst, resulting in enhanced activity toward OER.

Original languageEnglish
Pages (from-to)408-411
Number of pages4
JournalCatalysis Communications
Volume12
Issue number6
DOIs
Publication statusPublished - 2011 Feb 10

Fingerprint

Iridium
Oxygen
Catalysts
Oxide films
X ray photoelectron spectroscopy
Particle size

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Process Chemistry and Technology

Cite this

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Oxidized iridium nanodendrites as catalysts for oxygen evolution reactions. / Lee, Woong Hee; Kim, Hansung.

In: Catalysis Communications, Vol. 12, No. 6, 10.02.2011, p. 408-411.

Research output: Contribution to journalArticle

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