Formation of pt-based alloy nanoparticles assisted by molybdenum hexacarbonyl

Gerard M. Leteba; David R.G. Mitchell; Pieter B.J. Levecque; Eric van Steen; Candace I. Lang

doi:10.3390/nano11071825

Formation of pt-based alloy nanoparticles assisted by molybdenum hexacarbonyl

Gerard M. Leteba^*, David R.G. Mitchell, Pieter B.J. Levecque, Eric van Steen, Candace I. Lang^*

^*Corresponding author for this work

School of Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

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Abstract

We report on an optimized, scalable solution-phase synthetic procedure for the fabrication of fine-tuned monodisperse nanostructures (Pt(NiCo), PtNi and PtCo). The influence of different solute metal precursors and surfactants on the morphological evolution of homogeneous alloy nanoparticles (NPs) has been investigated. Molybdenum hexacarbonyl (Mo(CO)₆) was used as the reductant. We demonstrate that this solution-based strategy results in uniform-sized NPs, the morphology of which can be manipulated by appropriate selection of surfactants and solute metal precursors. Co-surfactants (oleylamine, OAm, and hexadecylamine, HDA) enabled the development of a variety of high-index faceted NP morphologies with varying degrees of curvatures while pure OAm selectively produced octahedral NP morphologies. This Mo(CO)₆-based synthetic protocol offers new avenues for the fabrication of multi-structured alloy NPs as high-performance electrocatalysts.

Original language	English
Article number	1825
Pages (from-to)	1-15
Number of pages	15
Journal	Nanomaterials
Volume	11
Issue number	7
DOIs	https://doi.org/10.3390/nano11071825
Publication status	Published - Jul 2021

Bibliographical note

Copyright the Author(s) 2021. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

alloys
nanoparticle
molybdenumhexacarbonyl
surfactants
STEM-EDXS
thermolytic synthesis

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10.3390/nano11071825Licence: CC BY

Publisher version (open access)Final published version, 667 KBLicence: CC BY

Cite this

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title = "Formation of pt-based alloy nanoparticles assisted by molybdenum hexacarbonyl",

abstract = "We report on an optimized, scalable solution-phase synthetic procedure for the fabrication of fine-tuned monodisperse nanostructures (Pt(NiCo), PtNi and PtCo). The influence of different solute metal precursors and surfactants on the morphological evolution of homogeneous alloy nanoparticles (NPs) has been investigated. Molybdenum hexacarbonyl (Mo(CO)6) was used as the reductant. We demonstrate that this solution-based strategy results in uniform-sized NPs, the morphology of which can be manipulated by appropriate selection of surfactants and solute metal precursors. Co-surfactants (oleylamine, OAm, and hexadecylamine, HDA) enabled the development of a variety of high-index faceted NP morphologies with varying degrees of curvatures while pure OAm selectively produced octahedral NP morphologies. This Mo(CO)6-based synthetic protocol offers new avenues for the fabrication of multi-structured alloy NPs as high-performance electrocatalysts.",

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author = "Leteba, {Gerard M.} and Mitchell, {David R.G.} and Levecque, {Pieter B.J.} and {van Steen}, Eric and Lang, {Candace I.}",

note = "Copyright the Author(s) 2021. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

year = "2021",

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AU - Leteba, Gerard M.

AU - Mitchell, David R.G.

AU - Levecque, Pieter B.J.

AU - van Steen, Eric

AU - Lang, Candace I.

N1 - Copyright the Author(s) 2021. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2021/7

Y1 - 2021/7

N2 - We report on an optimized, scalable solution-phase synthetic procedure for the fabrication of fine-tuned monodisperse nanostructures (Pt(NiCo), PtNi and PtCo). The influence of different solute metal precursors and surfactants on the morphological evolution of homogeneous alloy nanoparticles (NPs) has been investigated. Molybdenum hexacarbonyl (Mo(CO)6) was used as the reductant. We demonstrate that this solution-based strategy results in uniform-sized NPs, the morphology of which can be manipulated by appropriate selection of surfactants and solute metal precursors. Co-surfactants (oleylamine, OAm, and hexadecylamine, HDA) enabled the development of a variety of high-index faceted NP morphologies with varying degrees of curvatures while pure OAm selectively produced octahedral NP morphologies. This Mo(CO)6-based synthetic protocol offers new avenues for the fabrication of multi-structured alloy NPs as high-performance electrocatalysts.

AB - We report on an optimized, scalable solution-phase synthetic procedure for the fabrication of fine-tuned monodisperse nanostructures (Pt(NiCo), PtNi and PtCo). The influence of different solute metal precursors and surfactants on the morphological evolution of homogeneous alloy nanoparticles (NPs) has been investigated. Molybdenum hexacarbonyl (Mo(CO)6) was used as the reductant. We demonstrate that this solution-based strategy results in uniform-sized NPs, the morphology of which can be manipulated by appropriate selection of surfactants and solute metal precursors. Co-surfactants (oleylamine, OAm, and hexadecylamine, HDA) enabled the development of a variety of high-index faceted NP morphologies with varying degrees of curvatures while pure OAm selectively produced octahedral NP morphologies. This Mo(CO)6-based synthetic protocol offers new avenues for the fabrication of multi-structured alloy NPs as high-performance electrocatalysts.

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KW - nanoparticle

KW - molybdenumhexacarbonyl

KW - surfactants

KW - STEM-EDXS

KW - thermolytic synthesis

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ER -

Formation of pt-based alloy nanoparticles assisted by molybdenum hexacarbonyl

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