Effect of the carrier gas on the structure and composition of Co–Ni bimetallic nanoparticles generated by spark ablation
Ternero, Pau LU ; Sedrpooshan, Mehran LU ; Wahlqvist, David LU ; Meuller, Bengt O. LU ; Ek, Martin LU
; Hübner, Julia-Maria
LU
; Westerström, Rasmus
LU
and Messing, Maria E.
LU
(2023)
In Journal of Aerosol Science
170.
- Abstract
Spark ablation is a versatile technique for producing pure size-selected nanoparticles. The carrier gas used in spark ablation affects the nanoparticles’ generation, crystalline structure, and chemical composition. The comprehension of this phenomenon can contribute to the design of nanoparticles with tailored properties. In this paper, we evaluate the effects of reducing (95%N2 + 5%H2), inert (N2), and oxidative (air) carrier gases in a spark ablation setup with Co–Ni alloyed electrodes. The agglomerates’ particle size distribution, morphology, structure, and composition were highly dependent on the carrier gas, especially its relative oxygen content. The agglomerates were then sintered into compacted... (More)
Spark ablation is a versatile technique for producing pure size-selected nanoparticles. The carrier gas used in spark ablation affects the nanoparticles’ generation, crystalline structure, and chemical composition. The comprehension of this phenomenon can contribute to the design of nanoparticles with tailored properties. In this paper, we evaluate the effects of reducing (95%N2 + 5%H2), inert (N2), and oxidative (air) carrier gases in a spark ablation setup with Co–Ni alloyed electrodes. The agglomerates’ particle size distribution, morphology, structure, and composition were highly dependent on the carrier gas, especially its relative oxygen content. The agglomerates were then sintered into compacted particles. Three different crystalline structures and chemical compositions were observed with X-ray diffraction and confirmed with transmission electron microscopy for the compacted particles. For 95%N2 + 5%H2 and air, single-phase (Co,Ni) and (Co,Ni)O particles were identified, respectively, whereas for N2, two-phase (Co,Ni) and (Co,Ni)O particles were obtained. This work opens up new possibilities of tuning the structure and composition, i.e., distribution of metallic and oxide phases, of the produced particles and thus tailor their properties for specific applications by simply changing the carrier gas.
(Less)
- author
- Ternero, Pau
LU
; Sedrpooshan, Mehran
LU
; Wahlqvist, David
LU
; Meuller, Bengt O.
LU
; Ek, Martin
LU
; Hübner, Julia-Maria
LU
; Westerström, Rasmus
LU
and Messing, Maria E.
LU
- organization
- publishing date
- 2023-05
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Bimetallic nanoparticles, Carrier gas, Spark ablation
- in
- Journal of Aerosol Science
- volume
- 170
- article number
- 106146
- pages
- 11 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85147455664
- ISSN
- 0021-8502
- DOI
- 10.1016/j.jaerosci.2023.106146
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: This research received funding from the European Union’s H2020 MSCA (Grant No. 945378 ) (GenerationNano), the Swedish Research Council (Grant No. 2019-04970 ), the Swedish Foundation for Strategic Research (Grant No. FFL18-0282 ), the Swedish Energy Agency (Grant No. 50689-1 ), and NanoLund . We acknowledge Régis Ravelle-Chapuis for his help in the STEM-EDS data acquisition, Crispin Hetherington for his support in the transmission electron microscope, and Markus Snellman and Calle Preger for the data discussions. Part of the experimental work was performed in Lund Nano Lab, part of Myfab research infrastructure. Funding Information: This research received funding from the European Union's H2020 MSCA (Grant No. 945378) (GenerationNano), the Swedish Research Council (Grant No. 2019-04970), the Swedish Foundation for Strategic Research (Grant No. FFL18-0282), the Swedish Energy Agency (Grant No. 50689-1), and NanoLund. We acknowledge Régis Ravelle-Chapuis for his help in the STEM-EDS data acquisition, Crispin Hetherington for his support in the transmission electron microscope, and Markus Snellman and Calle Preger for the data discussions. Part of the experimental work was performed in Lund Nano Lab, part of Myfab research infrastructure. Publisher Copyright: © 2023 The Author(s)
- id
- 7dd34a47-2fc7-4815-add6-8f360893de95
- date added to LUP
- 2023-03-09 21:34:01
- date last changed
- 2023-11-21 07:35:41
@article{7dd34a47-2fc7-4815-add6-8f360893de95,
abstract = {{<p>Spark ablation is a versatile technique for producing pure size-selected nanoparticles. The carrier gas used in spark ablation affects the nanoparticles’ generation, crystalline structure, and chemical composition. The comprehension of this phenomenon can contribute to the design of nanoparticles with tailored properties. In this paper, we evaluate the effects of reducing (95%N<sub>2</sub> + 5%H<sub>2</sub>), inert (N<sub>2</sub>), and oxidative (air) carrier gases in a spark ablation setup with Co–Ni alloyed electrodes. The agglomerates’ particle size distribution, morphology, structure, and composition were highly dependent on the carrier gas, especially its relative oxygen content. The agglomerates were then sintered into compacted particles. Three different crystalline structures and chemical compositions were observed with X-ray diffraction and confirmed with transmission electron microscopy for the compacted particles. For 95%N<sub>2</sub> + 5%H<sub>2</sub> and air, single-phase (Co,Ni) and (Co,Ni)O particles were identified, respectively, whereas for N<sub>2</sub>, two-phase (Co,Ni) and (Co,Ni)O particles were obtained. This work opens up new possibilities of tuning the structure and composition, i.e., distribution of metallic and oxide phases, of the produced particles and thus tailor their properties for specific applications by simply changing the carrier gas.</p>}},
author = {{Ternero, Pau and Sedrpooshan, Mehran and Wahlqvist, David and Meuller, Bengt O. and Ek, Martin and Hübner, Julia-Maria and Westerström, Rasmus and Messing, Maria E.}},
issn = {{0021-8502}},
keywords = {{Bimetallic nanoparticles; Carrier gas; Spark ablation}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Journal of Aerosol Science}},
title = {{Effect of the carrier gas on the structure and composition of Co–Ni bimetallic nanoparticles generated by spark ablation}},
url = {{http://dx.doi.org/10.1016/j.jaerosci.2023.106146}},
doi = {{10.1016/j.jaerosci.2023.106146}},
volume = {{170}},
year = {{2023}},
}