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In-Flight Tuning of Au-Sn Nanoparticle Properties

Ternero, Pau LU ; Preger, Calle LU orcid ; Eriksson, Axel Christian LU orcid ; Rissler, Jenny LU ; Hübner, Julia Maria LU and Messing, Maria E. LU (2024) In Langmuir 40(31). p.16393-16399
Abstract

Multimetallic nanoparticles possess a variety of beneficial properties with potential relevance for various applications. These metallic nanoparticles can consist of randomly ordered alloys, which retain the properties of the constituting elements, or ordered intermetallics, which possess extended properties. Depending on the desired application, specific alloys or intermetallic compounds are required. However, it remains challenging to achieve particular morphologies, crystal structures, chemical compositions, and particle sizes because of the inherent complexity of nanoparticle synthesis. In this work, Au-Sn nanoparticles were synthesized using a continuous one-step gas-phase synthesis method that offers the possibility to anneal the... (More)

Multimetallic nanoparticles possess a variety of beneficial properties with potential relevance for various applications. These metallic nanoparticles can consist of randomly ordered alloys, which retain the properties of the constituting elements, or ordered intermetallics, which possess extended properties. Depending on the desired application, specific alloys or intermetallic compounds are required. However, it remains challenging to achieve particular morphologies, crystal structures, chemical compositions, and particle sizes because of the inherent complexity of nanoparticle synthesis. In this work, Au-Sn nanoparticles were synthesized using a continuous one-step gas-phase synthesis method that offers the possibility to anneal the nanoparticles in flight directly after generation to tune their properties. The bimetallic model system Au-Sn, comprising both alloys and intermetallic compounds, was studied in the temperature range of 300 to 1100 °C. The bimetallic Au/Sn ratio in the nanoparticles can be adjusted with in-flight annealing between 70/30 and 40/60 atomic %. While Au-rich alloys are obtained at lower temperatures, the increase in the annealing temperature leads to the formation of more Sn-rich intermetallic phases. Surface and size effects greatly influence particle morphologies and phase fractions. This research opens new opportunities for the synthesis of customized nanoparticles by temperature adjustment and particle size selection.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
40
issue
31
pages
7 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85199693727
  • pmid:39058950
ISSN
0743-7463
DOI
10.1021/acs.langmuir.4c01656
project
Aerosol@MAXIV – In-flight XPS of engineered aerosol nanoparticles
Aerosols@MAXIV: Building a new sample environment at MAXIV for aerosols
language
English
LU publication?
yes
id
3291a486-1d1a-48fd-887d-565be6102266
date added to LUP
2024-09-06 13:56:21
date last changed
2024-09-20 15:02:30
@article{3291a486-1d1a-48fd-887d-565be6102266,
  abstract     = {{<p>Multimetallic nanoparticles possess a variety of beneficial properties with potential relevance for various applications. These metallic nanoparticles can consist of randomly ordered alloys, which retain the properties of the constituting elements, or ordered intermetallics, which possess extended properties. Depending on the desired application, specific alloys or intermetallic compounds are required. However, it remains challenging to achieve particular morphologies, crystal structures, chemical compositions, and particle sizes because of the inherent complexity of nanoparticle synthesis. In this work, Au-Sn nanoparticles were synthesized using a continuous one-step gas-phase synthesis method that offers the possibility to anneal the nanoparticles in flight directly after generation to tune their properties. The bimetallic model system Au-Sn, comprising both alloys and intermetallic compounds, was studied in the temperature range of 300 to 1100 °C. The bimetallic Au/Sn ratio in the nanoparticles can be adjusted with in-flight annealing between 70/30 and 40/60 atomic %. While Au-rich alloys are obtained at lower temperatures, the increase in the annealing temperature leads to the formation of more Sn-rich intermetallic phases. Surface and size effects greatly influence particle morphologies and phase fractions. This research opens new opportunities for the synthesis of customized nanoparticles by temperature adjustment and particle size selection.</p>}},
  author       = {{Ternero, Pau and Preger, Calle and Eriksson, Axel Christian and Rissler, Jenny and Hübner, Julia Maria and Messing, Maria E.}},
  issn         = {{0743-7463}},
  language     = {{eng}},
  number       = {{31}},
  pages        = {{16393--16399}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Langmuir}},
  title        = {{In-Flight Tuning of Au-Sn Nanoparticle Properties}},
  url          = {{http://dx.doi.org/10.1021/acs.langmuir.4c01656}},
  doi          = {{10.1021/acs.langmuir.4c01656}},
  volume       = {{40}},
  year         = {{2024}},
}