Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 30, Issue 25, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202002633
Keywords
electrocatalysts; faceted nanoparticle; heterodimers; octopods; oxygen reduction
Categories
Funding
- EPSRC [EP/J500380/1, EP/P030467/1]
- Christian Doppler Research Association
- Austrian Federal Ministry for Digital and Economic Affairs
- National Foundation for Research, Technology and Development
- OMV Group
- Royal Society [NF160054]
- EPSRC [EP/P030467/1] Funding Source: UKRI
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The design and synthesis of faceted nanoparticles with a controlled composition is of enormous importance to modern catalyst engineering. Faceted FePt-Fe3O4 dumbbell nanoparticles are prepared by a simple, one-pot technique that avoids the need for expensive additives or preformed seeds. The faceted product consists of an FePt octopod and a cubic Fe3O4 lobe, of mean diameter 13.6 and 14.9 nm, respectively. The mass normalized activity for electrocatalytic oxygen reduction shows that this new structure types outperforms related catalysts in alkaline media. This work illustrates the power of morphology control and tailoring crystal facet abundance at the nanoparticle surface for enhancing catalytic performance.
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