Defective Pt–Ni/graphene nanomaterials by simultaneous or sequential treatments of organometallic precursors by low-pressure oxygen plasma

Research output: Contribution to journalArticle

Abstract

A strategy to reduce critical raw metals in nanocatalysts is to synthesize nanocomposites based on defective or bimetallic nanoparticles deposition on carbon nanomaterials. Conventional solution-based methods suffer from the extensive use of solvents and difficult scalability. In this study, defective Pt–Ni nanoparticles are formed on graphene nanoplatelets thanks to an original approach based on simultaneous or sequential low-temperature oxygen plasma treatments of nickel and platinum acetylacetonates. The two processing conditions produce aggregated Pt–Ni nanoparticles with variable morphologies, size crystallinities, and oxidation states. The materials analytical characterizations show that the sequential treatment promotes small Pt–Ni particle aggregates nucleation, while the simultaneous treatment leads to complex interconnected Pt–Ni-based phases. Such defective nanoparticles are promising for multiple applications in catalysis and energy.

Original languageEnglish
Article numbere1800203
JournalPlasma Processes and Polymers
DOIs
Publication statusPublished - 1 Jan 2019

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Graphite
oxygen plasma
Organometallics
Nanostructured materials
Graphene
graphene
low pressure
Oxygen
Nanoparticles
Plasmas
nanoparticles
cold plasmas
Platinum
Nickel
Catalysis
catalysis
Scalability
crystallinity
platinum
Nucleation

Keywords

  • graphene
  • low-pressure plasma treatment
  • prganometallic
  • Pt–Ni nanocomposites

Cite this

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title = "Defective Pt–Ni/graphene nanomaterials by simultaneous or sequential treatments of organometallic precursors by low-pressure oxygen plasma",
abstract = "A strategy to reduce critical raw metals in nanocatalysts is to synthesize nanocomposites based on defective or bimetallic nanoparticles deposition on carbon nanomaterials. Conventional solution-based methods suffer from the extensive use of solvents and difficult scalability. In this study, defective Pt–Ni nanoparticles are formed on graphene nanoplatelets thanks to an original approach based on simultaneous or sequential low-temperature oxygen plasma treatments of nickel and platinum acetylacetonates. The two processing conditions produce aggregated Pt–Ni nanoparticles with variable morphologies, size crystallinities, and oxidation states. The materials analytical characterizations show that the sequential treatment promotes small Pt–Ni particle aggregates nucleation, while the simultaneous treatment leads to complex interconnected Pt–Ni-based phases. Such defective nanoparticles are promising for multiple applications in catalysis and energy.",
keywords = "graphene, low-pressure plasma treatment, prganometallic, Pt–Ni nanocomposites",
author = "{da Silva Pires}, Mathieu and Emile Haye and Anthony Zubiaur and Nathalie Job and Pireaux, {Jean Jacques} and Laurent Houssiau and Yan Busby",
year = "2019",
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AU - da Silva Pires, Mathieu

AU - Haye, Emile

AU - Zubiaur, Anthony

AU - Job, Nathalie

AU - Pireaux, Jean Jacques

AU - Houssiau, Laurent

AU - Busby, Yan

PY - 2019/1/1

Y1 - 2019/1/1

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AB - A strategy to reduce critical raw metals in nanocatalysts is to synthesize nanocomposites based on defective or bimetallic nanoparticles deposition on carbon nanomaterials. Conventional solution-based methods suffer from the extensive use of solvents and difficult scalability. In this study, defective Pt–Ni nanoparticles are formed on graphene nanoplatelets thanks to an original approach based on simultaneous or sequential low-temperature oxygen plasma treatments of nickel and platinum acetylacetonates. The two processing conditions produce aggregated Pt–Ni nanoparticles with variable morphologies, size crystallinities, and oxidation states. The materials analytical characterizations show that the sequential treatment promotes small Pt–Ni particle aggregates nucleation, while the simultaneous treatment leads to complex interconnected Pt–Ni-based phases. Such defective nanoparticles are promising for multiple applications in catalysis and energy.

KW - graphene

KW - low-pressure plasma treatment

KW - prganometallic

KW - Pt–Ni nanocomposites

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