Nanoscale structural disorder in manganese oxide particles embedded in Nafion

Shery L.Y. Chang, Archana Singh, Rosalie K. Hocking, Christian Dwyer, Leone Spiccia

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

Earlier studies have shown that manganese oxide particles derived from a manganese molecular complex embedded in a Nafion film have one order of magnitude higher water-oxidation catalytic activity per manganese compared to many unsupported solid-state manganese oxide particles. Using transmission electron microscopy and electron scattering simulations, we have shown that the sodium-birnessite phase particles in Nafion exhibit an exceptionally high degree of layer mis-registration, and a high concentration of Mn vacancies, compared to the synthetic birnessite nanoparticles. It is therefore proposed that the differences in the activities correlate with the degree of disorder in the manganese oxide particles.

Original languageEnglish (US)
Pages (from-to)3730-3733
Number of pages4
JournalJournal of Materials Chemistry A
Volume2
Issue number11
DOIs
StatePublished - Mar 21 2014
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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