Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Nanoscale. 2013 Apr 7;5(7):2921-7. doi: 10.1039/c3nr33879g.

γ-Fe₂O₃ nanoparticle surface controls PtFe nanoparticle growth and catalytic properties.

Author information

  • 1Indiana University, Department of Chemistry, 800 E. Kirkwood Av., Bloomington, IN 47405, USA.

Abstract

We report a novel method for synthesis of alloy PtFe nanoparticles (NPs) of different compositions using γ-Fe2O3 NPs as an iron source. We show here other growth mechanisms than conventional nucleation on a NP surface leading to core-shell NP or seeded NP growth. Depending on reaction conditions, different compositions of PtFe NPs can be obtained. PtFe NPs may coexist with γ-Fe2O3 NPs in the reaction product. This mixture obtained in situ allows much higher catalytic activity in hydrogenation of methyl-3-buten-2-ol than that of only PtFe nanoparticles or merely mixed PtFe and γ-Fe2O3 NPs. The presence of both PtFe and γ-Fe2O3 NPs allows formation of dense and stable NP arrays which hold promise for catalytic applications in microreactors or other reactor designs where a catalytic film is favoured.

PMID:
23455042
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Royal Society of Chemistry
    Loading ...
    Write to the Help Desk