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Compositional tuning of gas-phase synthesized Pd–Cu nanoparticles

Franzén, Sara LU ; Jönsson, Linnéa LU ; Ternero, Pau LU ; Kåredal, Monica LU orcid ; Eriksson, Axel LU orcid ; Blomberg, Sara LU ; Hübner, Julia-Maria LU and Messing, Maria LU (2023) In Nanoscale Advances 5(22). p.6069-6077
Abstract
Bimetallic nanoparticles have gained significant attention in catalysis as potential alternatives to expensive catalysts based on noble metals. In this study, we investigate the compositional tuning of Pd–Cu bimetallic nanoparticles using a physical synthesis method called spark ablation. By utilizing pure and alloyed electrodes in different configurations, we demonstrate the ability to tailor the chemical composition of nanoparticles within the range of approximately 80 : 20 at% to 40 : 60 at% (Pd : Cu), measured using X-ray fluorescence (XRF) and transmission electron microscopy energy dispersive X-ray spectroscopy (TEM-EDXS). Time-resolved XRF measurements revealed a shift in composition throughout the ablation process, potentially... (More)
Bimetallic nanoparticles have gained significant attention in catalysis as potential alternatives to expensive catalysts based on noble metals. In this study, we investigate the compositional tuning of Pd–Cu bimetallic nanoparticles using a physical synthesis method called spark ablation. By utilizing pure and alloyed electrodes in different configurations, we demonstrate the ability to tailor the chemical composition of nanoparticles within the range of approximately 80 : 20 at% to 40 : 60 at% (Pd : Cu), measured using X-ray fluorescence (XRF) and transmission electron microscopy energy dispersive X-ray spectroscopy (TEM-EDXS). Time-resolved XRF measurements revealed a shift in composition throughout the ablation process, potentially influenced by material transfer between electrodes. Powder X-ray diffraction confirmed the predominantly fcc phase of the nanoparticles while high-resolution TEM and scanning TEM-EDXS confirmed the mixing of Pd and Cu within individual nanoparticles. X-ray photoelectron and absorption spectroscopy were used to analyze the outermost atomic layers of the nanoparticles, which is highly important for catalytic applications. Such comprehensive analyses offer insights into the formation and structure of bimetallic nanoparticles and pave the way for the development of efficient and affordable catalysts for various applications. (Less)
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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nanoscale Advances
volume
5
issue
22
pages
9 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:85172787130
ISSN
2516-0230
DOI
10.1039/D3NA00438D
language
English
LU publication?
yes
id
52fc2745-f0bb-4786-9037-98fcf7a4749c
date added to LUP
2023-11-08 14:20:14
date last changed
2023-12-07 10:09:31
@article{52fc2745-f0bb-4786-9037-98fcf7a4749c,
  abstract     = {{Bimetallic nanoparticles have gained significant attention in catalysis as potential alternatives to expensive catalysts based on noble metals. In this study, we investigate the compositional tuning of Pd–Cu bimetallic nanoparticles using a physical synthesis method called spark ablation. By utilizing pure and alloyed electrodes in different configurations, we demonstrate the ability to tailor the chemical composition of nanoparticles within the range of approximately 80 : 20 at% to 40 : 60 at% (Pd : Cu), measured using X-ray fluorescence (XRF) and transmission electron microscopy energy dispersive X-ray spectroscopy (TEM-EDXS). Time-resolved XRF measurements revealed a shift in composition throughout the ablation process, potentially influenced by material transfer between electrodes. Powder X-ray diffraction confirmed the predominantly fcc phase of the nanoparticles while high-resolution TEM and scanning TEM-EDXS confirmed the mixing of Pd and Cu within individual nanoparticles. X-ray photoelectron and absorption spectroscopy were used to analyze the outermost atomic layers of the nanoparticles, which is highly important for catalytic applications. Such comprehensive analyses offer insights into the formation and structure of bimetallic nanoparticles and pave the way for the development of efficient and affordable catalysts for various applications.}},
  author       = {{Franzén, Sara and Jönsson, Linnéa and Ternero, Pau and Kåredal, Monica and Eriksson, Axel and Blomberg, Sara and Hübner, Julia-Maria and Messing, Maria}},
  issn         = {{2516-0230}},
  language     = {{eng}},
  month        = {{09}},
  number       = {{22}},
  pages        = {{6069--6077}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Nanoscale Advances}},
  title        = {{Compositional tuning of gas-phase synthesized Pd–Cu nanoparticles}},
  url          = {{http://dx.doi.org/10.1039/D3NA00438D}},
  doi          = {{10.1039/D3NA00438D}},
  volume       = {{5}},
  year         = {{2023}},
}