Macro synthesis of SiC nanopowders via gas-phase reaction initiated by solid-phase reactants vaporizing in combustion synthesis
SiC nanomaterials exhibit outstanding mechanical properties and multifunctionality due to the size effect. Yet the existing methods fail to provide a low-cost and macro synthesis route for the preparation of high-quality SiC nanopowders. Here we reported a combustion synthesis method for macro synth...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425004582 |
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| author | Fei Li Jie Zhang Yiyao Ge Kexin Chen Guanghua Liu |
| author_facet | Fei Li Jie Zhang Yiyao Ge Kexin Chen Guanghua Liu |
| author_sort | Fei Li |
| collection | DOAJ |
| description | SiC nanomaterials exhibit outstanding mechanical properties and multifunctionality due to the size effect. Yet the existing methods fail to provide a low-cost and macro synthesis route for the preparation of high-quality SiC nanopowders. Here we reported a combustion synthesis method for macro synthesis of SiC nanopowders via gas-phase reaction initiated by solid-phase reactants (Na2CO3 and Si powders) vaporizing. The synthesis process is self-sustainable and can prepare over 500g SiC nanopowders at once within a few minutes on the lab equipment. By tuning the reactant stoichiometric ratio and Ar pressure to change the supersaturation of the intermediate gaseous products and control SiC crystal nucleation and growth rates, the controlled preparation of SiC nanopowders has been successfully achieved. We stably prepared SiC nanopowders with the single β phase, a primary particle size <10 nm, narrow size distribution, and a specific surface area >45 m2/g. This study not only achieved significant breakthroughs in the synthesis theory of high-quality SiC nanopowders, but also offered a viable pathway for large-scale industrial applications of SiC nanomaterials. |
| format | Article |
| id | doaj-art-6e9b681476b64f46ba84f93bce00bbfb |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-6e9b681476b64f46ba84f93bce00bbfb2025-08-20T01:47:28ZengElsevierJournal of Materials Research and Technology2238-78542025-03-01355746575410.1016/j.jmrt.2025.02.211Macro synthesis of SiC nanopowders via gas-phase reaction initiated by solid-phase reactants vaporizing in combustion synthesisFei Li0Jie Zhang1Yiyao Ge2Kexin Chen3Guanghua Liu4State Key Laboratory of New Ceramic Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China; Corresponding author.Advanced Structural Ceramics Innovation Center, YongJiang Laboratory, Ningbo, 315202, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China; Corresponding author.State Key Laboratory of New Ceramic Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China; Corresponding author.SiC nanomaterials exhibit outstanding mechanical properties and multifunctionality due to the size effect. Yet the existing methods fail to provide a low-cost and macro synthesis route for the preparation of high-quality SiC nanopowders. Here we reported a combustion synthesis method for macro synthesis of SiC nanopowders via gas-phase reaction initiated by solid-phase reactants (Na2CO3 and Si powders) vaporizing. The synthesis process is self-sustainable and can prepare over 500g SiC nanopowders at once within a few minutes on the lab equipment. By tuning the reactant stoichiometric ratio and Ar pressure to change the supersaturation of the intermediate gaseous products and control SiC crystal nucleation and growth rates, the controlled preparation of SiC nanopowders has been successfully achieved. We stably prepared SiC nanopowders with the single β phase, a primary particle size <10 nm, narrow size distribution, and a specific surface area >45 m2/g. This study not only achieved significant breakthroughs in the synthesis theory of high-quality SiC nanopowders, but also offered a viable pathway for large-scale industrial applications of SiC nanomaterials.http://www.sciencedirect.com/science/article/pii/S2238785425004582Silicon carbideNanoparticlesCombustion synthesisGas-phase reaction |
| spellingShingle | Fei Li Jie Zhang Yiyao Ge Kexin Chen Guanghua Liu Macro synthesis of SiC nanopowders via gas-phase reaction initiated by solid-phase reactants vaporizing in combustion synthesis Journal of Materials Research and Technology Silicon carbide Nanoparticles Combustion synthesis Gas-phase reaction |
| title | Macro synthesis of SiC nanopowders via gas-phase reaction initiated by solid-phase reactants vaporizing in combustion synthesis |
| title_full | Macro synthesis of SiC nanopowders via gas-phase reaction initiated by solid-phase reactants vaporizing in combustion synthesis |
| title_fullStr | Macro synthesis of SiC nanopowders via gas-phase reaction initiated by solid-phase reactants vaporizing in combustion synthesis |
| title_full_unstemmed | Macro synthesis of SiC nanopowders via gas-phase reaction initiated by solid-phase reactants vaporizing in combustion synthesis |
| title_short | Macro synthesis of SiC nanopowders via gas-phase reaction initiated by solid-phase reactants vaporizing in combustion synthesis |
| title_sort | macro synthesis of sic nanopowders via gas phase reaction initiated by solid phase reactants vaporizing in combustion synthesis |
| topic | Silicon carbide Nanoparticles Combustion synthesis Gas-phase reaction |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425004582 |
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