We report a new synthetic approach for the preparation of small FeOx nanoparticles, formed on the surface of hollow N,O-doped carbon nanoshells through an "inside-out" mechanism. By control of the pyrolysis conditions, iron species can ex-solve from inside N,O-doped carbon nanoshells onto the external carbon surface, where they form stable small FeOx nanoparticles. The location (endo- or exohedral) of the iron species is correlated with an observed switch of the product selectivity (from H2O2 to H2O) in the electrocatalytic oxygen reduction reaction.

Ex-Solution Synthesis of Sub-5-nm FeOx Nanoparticles on Mesoporous Hollow N,O-Doped Carbon Nanoshells for Electrocatalytic Oxygen Reduction

Kralj S.;Longobardo F.;Iglesias D.;Bevilacqua M.;Tavagnacco C.;Criado A.;Marchesan S.;Melchionna M.;Prato M.;Fornasiero P.
2019

Abstract

We report a new synthetic approach for the preparation of small FeOx nanoparticles, formed on the surface of hollow N,O-doped carbon nanoshells through an "inside-out" mechanism. By control of the pyrolysis conditions, iron species can ex-solve from inside N,O-doped carbon nanoshells onto the external carbon surface, where they form stable small FeOx nanoparticles. The location (endo- or exohedral) of the iron species is correlated with an observed switch of the product selectivity (from H2O2 to H2O) in the electrocatalytic oxygen reduction reaction.
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https://pubs.acs.org/doi/abs/10.1021/acsanm.9b01511
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11368/2958688
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