Growth of metal nanoparticles in hydrocarbon atmosphere of arc discharge
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866929568996130816 |
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| author | Musikhin, Stanislav Nemchinsky, Valerian Raitses, Yevgeny |
| author_facet | Musikhin, Stanislav Nemchinsky, Valerian Raitses, Yevgeny |
| contents | A direct current (DC) arc discharge is a widely used method for large-scale production of metal nanoparticles, core-shell particles, and carbon nanotubes. Here, we explore the growth of iron nanoparticles in a modified DC arc discharge. Iron particles are produced by the evaporation of an anode, made from low-carbon steel. Methane admixture into argon gas serves as a carbon source. Electron microscopy and elemental analysis suggest that hydrocarbons decompose on iron clusters forming a carbon shell, which inhibits iron particle growth until its full encapsulation, at which point the iron core growth is ceased. Experimental observations are explained using an aerosol growth model. The results demonstrate the path to manipulate metal particle size in a hydrocarbon arc environment. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_12700 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Growth of metal nanoparticles in hydrocarbon atmosphere of arc discharge Musikhin, Stanislav Nemchinsky, Valerian Raitses, Yevgeny Plasma Physics Applied Physics A direct current (DC) arc discharge is a widely used method for large-scale production of metal nanoparticles, core-shell particles, and carbon nanotubes. Here, we explore the growth of iron nanoparticles in a modified DC arc discharge. Iron particles are produced by the evaporation of an anode, made from low-carbon steel. Methane admixture into argon gas serves as a carbon source. Electron microscopy and elemental analysis suggest that hydrocarbons decompose on iron clusters forming a carbon shell, which inhibits iron particle growth until its full encapsulation, at which point the iron core growth is ceased. Experimental observations are explained using an aerosol growth model. The results demonstrate the path to manipulate metal particle size in a hydrocarbon arc environment. |
| title | Growth of metal nanoparticles in hydrocarbon atmosphere of arc discharge |
| topic | Plasma Physics Applied Physics |
| url | https://arxiv.org/abs/2403.12700 |