Synthesis of high entropy alloy nanoparticles by pulsed laser ablation in liquids: influence of target preparation on stoichiometry and productivity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00587569" target="_blank" >RIV/68378271:_____/24:00587569 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0354699" target="_blank" >https://hdl.handle.net/11104/0354699</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/cnma.202400064" target="_blank" >10.1002/cnma.202400064</a>
Alternative languages
Result language
angličtina
Original language name
Synthesis of high entropy alloy nanoparticles by pulsed laser ablation in liquids: influence of target preparation on stoichiometry and productivity
Original language description
High entropy alloys (HEAs) have a wide range of applications across various fields, including structural engineering, biomedical science, catalysis, magnetism, and nuclear technology. Nanoscale HEA particles show promising catalytic properties. Nevertheless, attaining versatile composition control in nanoparticles poses a persistent challenge. This study proposes the use of pulsed laser ablation in liquids (PLAL) for synthesizing nanoparticles using equiatomic CoCrFeMnNi targets with varied preparation methods. We evaluate the impact of target preparation method on nanoparticle yield and composition as well as the magnetic properties of the nanoparticles. The elemental powder-pressed heat-treated target (HEA-PP), identified as the most time-efficient and cost-effective, exhibits noticeable segregation and non-uniform elemental distribution compared to ball milled hot-pressed powder (HEA-BP) and face-centered cubic (FCC) single crystal (HEA-SX) alloy targets. From all targets, nanoparticles (sizes from 2 to 120 nm) can be produced in ethanol with a nearly equiatomic CoCrFeMnNi composition and a FCC structure, showing oxidation of up to 20 at.%. Nanoparticles from HEA-PP exist in a solid solution state, while those from HEA-BP and HEA-SX form core-shell structures with a Mn shell due to inhomogeneous material expulsion, confirmed by mass spectrometry. HEA-PP PLAL synthesis demonstrates 6.8 % and 15.1 % higher productivity compared to HEA-BP and HEA-SX, establishing PLAL of elemental powder-pressed targets as a reliable, time-efficient, and cost-effective method for generating solid solution HEA nanoparticles.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/GF22-38449L" target="_blank" >GF22-38449L: Synthesis of high-entropy alloy nanoparticles by pulsed laser ablation in liquids: up-scalability and mono-dispersity control by beam shaping</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ChemNanoMat
ISSN
2199-692X
e-ISSN
2199-692X
Volume of the periodical
10
Issue of the periodical within the volume
5
Country of publishing house
DE - GERMANY
Number of pages
14
Pages from-to
e202400064
UT code for WoS article
001190729800001
EID of the result in the Scopus database
2-s2.0-85188517395