| 利用天然磁铁矿简易绿色合成磁性Fe3C@C纳米材料 |
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| 引用本文： | 古桔文,白 勇,仇松柏,张 浅,王铁军. 利用天然磁铁矿简易绿色合成磁性Fe3C@C纳米材料[J]. 化学物理学报, 2020, 33(3): 371-375 |
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| 作者姓名： | 古桔文 白 勇 仇松柏 张 浅 王铁军 |
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| 作者单位： | 广东工业大学轻工化工学院，广州 510006 |
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| 摘 要： | 采用改进的溶胶凝胶法，以天然磁铁矿为铁源，开发出一种制备过程简单且环境友好且低成本的磁性Fe3C@C纳米材料制备策略. 其中，柠檬酸作为多元羧酸络合剂，不但可以有效地溶解不同铁源，例如Fe、Fe3O4或天然磁铁矿，形成柠檬酸铁盐络合物；还可以在热解过程中作为碳源，形成包裹碳层. 通过控制高温热解过程可以直接形成特殊的核-壳结构形态. Fe3C@C纳米材料具有超顺磁性特性(38.09 emu/mg).
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| 关 键 词： | 磁性材料，天然铁矿石，Fe3C@C，柠檬酸络合 |
| 收稿时间： | 2019-07-23 |
Facile Green Synthesis of Magnetic Fe3C@C Nanocomposite using Natural Magnetite |
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| Ju-wen Gu,Yong Bai,Song-bai Qiu,Qian Zhang,Tie-jun Wang. Facile Green Synthesis of Magnetic Fe3C@C Nanocomposite using Natural Magnetite[J]. Chinese Journal of Chemical Physics, 2020, 33(3): 371-375 |
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| Authors: | Ju-wen Gu Yong Bai Song-bai Qiu Qian Zhang Tie-jun Wang |
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| Affiliation: | School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China |
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| Abstract: | One simple and environmental friendly synthesis strategy for preparing low-cost magnetic Fe3C@C materials has been facilely developed using a modi ed sol-gel approach, wherein natural magnetite acted as the iron source. A chelating polycarboxylic acid such as citric acid (CA) was employed as the carbon source, and it dissolved Fe very effectively, Fe3O4 and natural magnetite to composite an iron-citrate complex with the assistance of ammonium hy-droxide. The core-shell structure of the as-prepared nanocomposites was formed directly by high-temperature pyrolysis. The Fe3C@C materials exhibited superparamagnetic properties (38.09 emu/mg), suggesting potential applications in biomedicine, environment, absorption, catalysis, etc. |
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| Keywords: | Magnetic material Natural magnetite Fe3C@C Citric acid complexation |
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