Engineered Pd-Ga alloy nanoparticles through spark ablation and in-flight metal-organic precursor decomposition
(2026) In Journal of Aerosol Science 191.- Abstract
Pd-Ga alloy nanoparticles with tunable compositions were produced by combining spark ablation with a downstream injection of a metal-organic precursor. This dual-process approach enables control over nanoparticle composition and morphology by adjusting precursor flow rate and sintering temperature. At lower precursor flows, uniform Pd-Ga nanoparticles form, exhibiting stable Pd5Ga2 and Pd2Ga phases. HRTEM and STEM-EDX analyses reveal that as precursor supply increases, Ga incorporation intensifies, leading to structural transitions, phase segregation, and the formation of PdGa dominated phases with amorphous Ga-rich domains, influencing nanoparticle shape and crystallinity. This process unlocks pathways... (More)
Pd-Ga alloy nanoparticles with tunable compositions were produced by combining spark ablation with a downstream injection of a metal-organic precursor. This dual-process approach enables control over nanoparticle composition and morphology by adjusting precursor flow rate and sintering temperature. At lower precursor flows, uniform Pd-Ga nanoparticles form, exhibiting stable Pd5Ga2 and Pd2Ga phases. HRTEM and STEM-EDX analyses reveal that as precursor supply increases, Ga incorporation intensifies, leading to structural transitions, phase segregation, and the formation of PdGa dominated phases with amorphous Ga-rich domains, influencing nanoparticle shape and crystallinity. This process unlocks pathways for tailoring alloy compositions in-flight with low-melting point materials.
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- author
- Bermeo, Marie
LU
; Snellman, Markus
LU
; Jönsson, Linnéa
LU
; Krinke, Thomas
LU
; Li, Zhongshan
LU
; Deppert, Knut
LU
and Messing, Maria E. LU
- organization
- publishing date
- 2026-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Metal-organic, Nanoparticles, Pd-Ga, Spark ablation, TMGa
- in
- Journal of Aerosol Science
- volume
- 191
- article number
- 106698
- pages
- 9 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:105016462089
- ISSN
- 0021-8502
- DOI
- 10.1016/j.jaerosci.2025.106698
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2025 The Authors
- id
- 86457315-f65a-4969-a4ec-8384cd32cc36
- date added to LUP
- 2025-09-29 07:21:48
- date last changed
- 2025-09-29 14:28:59
@article{86457315-f65a-4969-a4ec-8384cd32cc36, abstract = {{<p>Pd-Ga alloy nanoparticles with tunable compositions were produced by combining spark ablation with a downstream injection of a metal-organic precursor. This dual-process approach enables control over nanoparticle composition and morphology by adjusting precursor flow rate and sintering temperature. At lower precursor flows, uniform Pd-Ga nanoparticles form, exhibiting stable Pd<sub>5</sub>Ga<sub>2</sub> and Pd<sub>2</sub>Ga phases. HRTEM and STEM-EDX analyses reveal that as precursor supply increases, Ga incorporation intensifies, leading to structural transitions, phase segregation, and the formation of PdGa dominated phases with amorphous Ga-rich domains, influencing nanoparticle shape and crystallinity. This process unlocks pathways for tailoring alloy compositions in-flight with low-melting point materials.</p>}}, author = {{Bermeo, Marie and Snellman, Markus and Jönsson, Linnéa and Krinke, Thomas and Li, Zhongshan and Deppert, Knut and Messing, Maria E.}}, issn = {{0021-8502}}, keywords = {{Metal-organic; Nanoparticles; Pd-Ga; Spark ablation; TMGa}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Journal of Aerosol Science}}, title = {{Engineered Pd-Ga alloy nanoparticles through spark ablation and in-flight metal-organic precursor decomposition}}, url = {{http://dx.doi.org/10.1016/j.jaerosci.2025.106698}}, doi = {{10.1016/j.jaerosci.2025.106698}}, volume = {{191}}, year = {{2026}}, }