| 熔盐电解合成碳化硅纳米颗粒及其光致发光特性（英文） |
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| 引用本文： | 庞忠亚,李想,张学强,李金键,汪淑娟,熊晓璐,李光石,许茜,周忠福,邹星礼,鲁雄刚.熔盐电解合成碳化硅纳米颗粒及其光致发光特性（英文）[J].中国有色金属学会会刊,2022,32(11):3790-3800. |
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| 作者姓名： | 庞忠亚 李想 张学强 李金键 汪淑娟 熊晓璐 李光石 许茜 周忠福 邹星礼 鲁雄刚 |
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| 作者单位： | 1. 上海大学材料科学与工程学院高品质特殊钢冶金与制备省部共建国家重点实验室;2. Institute of Mathematics and Physics, Aberystwyth University;3. 上海电机学院材料学院 |
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| 基金项目： | financially supported by the National Natural Science Foundation of China (Nos. 52022054, 51974181, 52004157)；;the Shanghai Rising-Star Program, China (No. 19QA1403600)；;the Shanghai Sailing Program, China (No. 21YF1412900)；;the Iron and Steel Joint Research Fund of National Natural Science Foundation of China and China Baowu Steel Group Corporation Limited (No. U1860203)；;the “Shuguang Program” supported by the Shanghai Education Development Foundation and the Shanghai Municipal Education Commission, China (No. 21SG42)； |
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| 摘 要： | 提出一种一步熔盐电化学方法，以超细二氧化硅和碳粉混合物为原料合成碳化硅纳米颗粒。通过X射线衍射、电子显微镜、拉曼光谱、光致发光光谱等系统研究电解合成过程及产物的物化特性。提出二氧化硅/碳粉在氯化钙熔盐中电解合成纳米碳化硅时存在化学/电化学复合、电化学脱氧和原位碳化的耦合反应机理。结果表明，所制备的碳化硅纳米颗粒的粒径集中分布在8～14 nm，并具有多晶结构。此外，由于协同的尺寸效应和微观结构特征，碳化硅纳米颗粒具有明显的光致发光特性。
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| 关 键 词： | 碳化硅 纳米材料 熔盐电解 脱氧 光致发光 |
| 收稿时间： | 12 September 2021 |
Molten salt electrosynthesis of silicon carbide nanoparticles and their photoluminescence property |
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| Affiliation: | 1. State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;2. Institute of Mathematics and Physics, Aberystwyth University, Aberystwyth SY23 3BZ, UK;3. School of Materials Science, Shanghai Dianji University, Shanghai 201306, China |
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| Abstract: | A one-step molten salt electrochemical strategy was proposed to synthesize SiC nanoparticles from ultra-fine silicon dioxide/carbon (SiO2/C) mixtures. The electrosynthesis process and physicochemical properties of the synthesized products were systematically analyzed via X-ray diffraction, electron microscopy, Raman spectroscopy and photoluminescence spectroscopy, etc. A combined chemical/electrochemical reaction, electrochemical deoxidation, and in-situ carbonization reaction mechanism was proposed to reveal the electrochemical synthesis process of SiC nanoparticles from SiO2/C in molten CaCl2. The as-prepared SiC with particle size ranging from 8 to 14 nm possesses a polycrystalline structure. In addition, the SiC nanoparticles demonstrate obvious photoluminescence property due to the synergetic size effect and microstructural characteristics. |
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| Keywords: | SiC nanomaterials molten salt electrosynthesis deoxidation photoluminescence |
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