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Compositional tuning of gas-phase synthesized Pd–Cu nanoparticles

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 utilizi...

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Autores principales: Franzén, Sara M., Jönsson, Linnéa, Ternero, Pau, Kåredal, Monica, Eriksson, Axel C., Blomberg, Sara, Hübner, Julia-Maria, Messing, Maria E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10628985/
https://www.ncbi.nlm.nih.gov/pubmed/37941940
http://dx.doi.org/10.1039/d3na00438d
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author Franzén, Sara M.
Jönsson, Linnéa
Ternero, Pau
Kåredal, Monica
Eriksson, Axel C.
Blomberg, Sara
Hübner, Julia-Maria
Messing, Maria E.
author_facet Franzén, Sara M.
Jönsson, Linnéa
Ternero, Pau
Kåredal, Monica
Eriksson, Axel C.
Blomberg, Sara
Hübner, Julia-Maria
Messing, Maria E.
author_sort Franzén, Sara M.
collection PubMed
description 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.
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spelling pubmed-106289852023-11-08 Compositional tuning of gas-phase synthesized Pd–Cu nanoparticles Franzén, Sara M. Jönsson, Linnéa Ternero, Pau Kåredal, Monica Eriksson, Axel C. Blomberg, Sara Hübner, Julia-Maria Messing, Maria E. Nanoscale Adv Chemistry 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. RSC 2023-09-06 /pmc/articles/PMC10628985/ /pubmed/37941940 http://dx.doi.org/10.1039/d3na00438d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Franzén, Sara M.
Jönsson, Linnéa
Ternero, Pau
Kåredal, Monica
Eriksson, Axel C.
Blomberg, Sara
Hübner, Julia-Maria
Messing, Maria E.
Compositional tuning of gas-phase synthesized Pd–Cu nanoparticles
title Compositional tuning of gas-phase synthesized Pd–Cu nanoparticles
title_full Compositional tuning of gas-phase synthesized Pd–Cu nanoparticles
title_fullStr Compositional tuning of gas-phase synthesized Pd–Cu nanoparticles
title_full_unstemmed Compositional tuning of gas-phase synthesized Pd–Cu nanoparticles
title_short Compositional tuning of gas-phase synthesized Pd–Cu nanoparticles
title_sort compositional tuning of gas-phase synthesized pd–cu nanoparticles
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10628985/
https://www.ncbi.nlm.nih.gov/pubmed/37941940
http://dx.doi.org/10.1039/d3na00438d
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