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dc.contributor.author
D'Accriscio, Florian
dc.contributor.author
Schrader, Erik
dc.contributor.author
Sassoye, Capucine
dc.contributor.author
Selmane, Mohamed
dc.contributor.author
André, Rémi F.
dc.contributor.author
Lamaison, Sarah
dc.contributor.author
Wakerley, David
dc.contributor.author
Fontecave, Marc
dc.contributor.author
Mougel, Victor
dc.contributor.author
Le Corre, Grégoire
dc.contributor.author
Grützmacher, Hansjörg
dc.contributor.author
Sanchez, Clément
dc.contributor.author
Carenco, Sophie
dc.date.accessioned
2020-12-17T06:07:43Z
dc.date.available
2020-12-17T06:07:43Z
dc.date.issued
2020-08
dc.identifier.other
10.1002/cnma.202000198
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/456744
dc.description.abstract
The formation of iron phosphide nanoparticles (FexP NPs) is a well‐studied process. It usually uses air‐sensitive phosphorus precursors such as n‐trioctylphosphine or white phosphorus. In this study, we report the synthesis and characterization of a remarkably stable tetrakis(acyl)cyclotetraphosphane, P4(MesCO)4. We demonstrate that this compound can be used as a stoichiometric source of P(0) species in order to synthesize FeP and Fe2P nanoparticles at only 250 °C. This tunable process provides a route to monodisperse nanoparticles with different compositions and crystallinities. We combine X‐Ray photoelectron spectroscopy (XPS) and atomic pair distribution function (PDF) in order to study the local order and bonding in the amorphous and crystalline materials. We show that crystalline FeP forms via an intermediate amorphous phase (obtained at a lower temperature) that presents local order similar to that of the crystalline sample. From the results of this work, a better understanding of the mechanism of the formation of amorphous and crystalline FexP NPs is provided which relies on the use of a stoichiometric and single P‐source. We then explore the electrocatalytic properties of FexP nanoparticles for the hydrogen evolution reaction (HER) in acidic and neutral electrolytes. In both electrolytes, amorphous FeP is a more efficient catalyst than crystalline FeP, itself more efficient than crystalline Fe2P. Our study paves the way for a more systematic investigation of amorphous metal phosphide phases in electrocatalysis. It also shows the beneficial properties of PDF on the characterization of such nanomaterials, which is highly challenging.
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.subject
Iron phosphide
en_US
dc.subject
Nanoparticles
en_US
dc.subject
Colloidal synthesis
en_US
dc.subject
Atomic pair distribution function
en_US
dc.subject
Hydrogen evolution reaction
en_US
dc.title
A Single Molecular Stoichiometric P‐Source for Phase‐Selective Synthesis of Crystalline and Amorphous Iron Phosphide Nanocatalysts
en_US
dc.type
Journal Article
dc.date.published
2020-04-28
ethz.journal.title
ChemNanoMat
ethz.journal.volume
6
en_US
ethz.journal.issue
8
en_US
ethz.pages.start
1208
en_US
ethz.pages.end
1219
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Weinheim
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02513 - Laboratorium für Anorganische Chemie / Laboratory of Inorganic Chemistry::03447 - Grützmacher, Hansjörg / Grützmacher, Hansjörg
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02513 - Laboratorium für Anorganische Chemie / Laboratory of Inorganic Chemistry::09654 - Mougel, Victor / Mougel, Victor
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02513 - Laboratorium für Anorganische Chemie / Laboratory of Inorganic Chemistry::03447 - Grützmacher, Hansjörg / Grützmacher, Hansjörg
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02513 - Laboratorium für Anorganische Chemie / Laboratory of Inorganic Chemistry::09654 - Mougel, Victor / Mougel, Victor
en_US
ethz.date.deposited
2020-05-29T02:16:19Z
ethz.source
WOS
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2020-12-17T06:07:56Z
ethz.rosetta.lastUpdated
2022-03-29T04:36:07Z
ethz.rosetta.versionExported
true
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/417239
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/456425
ethz.COinS
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