PtxCuy@TiO2 nanoparticles by low-pressure plasma synthesis

Loris Chavée; Jean-Francois Colomer; Alexandre Nominé; Stéphanie Bruyère; Amine Achour; Laurent Houssiau; Emile Haye

doi:10.1016/j.matlet.2021.129576

PtxCuy@TiO2 nanoparticles by low-pressure plasma synthesis

Loris Chavée, Jean-Francois Colomer, Alexandre Nominé, Stéphanie Bruyère, Amine Achour, Laurent Houssiau, Emile Haye

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

Abstract

A new and original method is presented to synthesize Pt, Cu, and Pt_xCu_y nanoparticles (NPs) anchored onto an inorganic nanopowder substrate (TiO₂), based on the plasma degradation, within an Ar/NH₃ radiofrequency plasma discharge, of solid organometallics (Cu and Pt acetylacetonate), mixed with TiO₂. Both chemical and crystallographic characterizations confirm the formation of metastable alloyed Pt-Cu nanoparticles. The difference of Pt and Cu concentrations in NPs measured with a volume technique (X-ray diffraction) and a surface technique (X-ray photoelectron spectroscopy) suggests a Pt concentration gradient within NPs attributed to a difference in organometallics degradation kinetics.

Original language	English
Article number	129576
Journal	Materials Letters
Volume	291
Early online date	18 Feb 2021
DOIs	https://doi.org/10.1016/j.matlet.2021.129576
Publication status	Published - 15 May 2021

Keywords

Alloys
Nanoparticle
RF-ICP plasma

Access to Document

10.1016/j.matlet.2021.129576

Cite this

@article{a414b3e090174686aa202a86a8503afe,

title = "PtxCuy@TiO2 nanoparticles by low-pressure plasma synthesis",

abstract = "A new and original method is presented to synthesize Pt, Cu, and PtxCuy nanoparticles (NPs) anchored onto an inorganic nanopowder substrate (TiO2), based on the plasma degradation, within an Ar/NH3 radiofrequency plasma discharge, of solid organometallics (Cu and Pt acetylacetonate), mixed with TiO2. Both chemical and crystallographic characterizations confirm the formation of metastable alloyed Pt-Cu nanoparticles. The difference of Pt and Cu concentrations in NPs measured with a volume technique (X-ray diffraction) and a surface technique (X-ray photoelectron spectroscopy) suggests a Pt concentration gradient within NPs attributed to a difference in organometallics degradation kinetics.",

keywords = "Alloys, Nanoparticle, RF-ICP plasma",

author = "Loris Chav{\'e}e and Jean-Francois Colomer and Alexandre Nomin{\'e} and St{\'e}phanie Bruy{\`e}re and Amine Achour and Laurent Houssiau and Emile Haye",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = may,

day = "15",

doi = "10.1016/j.matlet.2021.129576",

language = "English",

volume = "291",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

}

TY - JOUR

T1 - PtxCuy@TiO2 nanoparticles by low-pressure plasma synthesis

AU - Chavée, Loris

AU - Colomer, Jean-Francois

AU - Nominé, Alexandre

AU - Bruyère, Stéphanie

AU - Achour, Amine

AU - Houssiau, Laurent

AU - Haye, Emile

PY - 2021/5/15

Y1 - 2021/5/15

N2 - A new and original method is presented to synthesize Pt, Cu, and PtxCuy nanoparticles (NPs) anchored onto an inorganic nanopowder substrate (TiO2), based on the plasma degradation, within an Ar/NH3 radiofrequency plasma discharge, of solid organometallics (Cu and Pt acetylacetonate), mixed with TiO2. Both chemical and crystallographic characterizations confirm the formation of metastable alloyed Pt-Cu nanoparticles. The difference of Pt and Cu concentrations in NPs measured with a volume technique (X-ray diffraction) and a surface technique (X-ray photoelectron spectroscopy) suggests a Pt concentration gradient within NPs attributed to a difference in organometallics degradation kinetics.

AB - A new and original method is presented to synthesize Pt, Cu, and PtxCuy nanoparticles (NPs) anchored onto an inorganic nanopowder substrate (TiO2), based on the plasma degradation, within an Ar/NH3 radiofrequency plasma discharge, of solid organometallics (Cu and Pt acetylacetonate), mixed with TiO2. Both chemical and crystallographic characterizations confirm the formation of metastable alloyed Pt-Cu nanoparticles. The difference of Pt and Cu concentrations in NPs measured with a volume technique (X-ray diffraction) and a surface technique (X-ray photoelectron spectroscopy) suggests a Pt concentration gradient within NPs attributed to a difference in organometallics degradation kinetics.

KW - Alloys

KW - Nanoparticle

KW - RF-ICP plasma

UR - http://www.scopus.com/inward/record.url?scp=85101648958&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2021.129576

DO - 10.1016/j.matlet.2021.129576

M3 - Article

AN - SCOPUS:85101648958

SN - 0167-577X

VL - 291

JO - Materials Letters

JF - Materials Letters

M1 - 129576

ER -

PtxCuy@TiO2 nanoparticles by low-pressure plasma synthesis

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this