| 乙炔气氛下制备碳包铁纳米粒子及其表征 |
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| 引用本文： | 张现平,张志焜,崔作林. 乙炔气氛下制备碳包铁纳米粒子及其表征[J]. 青岛科技大学学报(自然科学版), 2004, 25(1): 30-33 |
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| 作者姓名： | 张现平 张志焜 崔作林 |
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| 作者单位： | 青岛科技大学材料与环境科学学院,山东青岛266042 |
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| 摘 要： | 采用C2 H2 为碳源制备了碳包铁纳米粒子 ,通过X射线衍射 (XRD) ,透射电镜(TEM) ,热重 差热分析仪 (TG DSC)等分析手段对粒子的成分、形貌等进行了表征 ;在氮气氛中对粒子进行了退火处理 ,对碳包铁纳米粒子的形成机制进行了初步探讨。结果表明 :制备的粒子中含有α Fe相、FeC相和Fe3C相 ,没有铁的氧化物相出现。铁粒子在碳层的保护下有很好的抗酸蚀能力 ,碳层的存在也增强了纳米铁粒子的抗氧化能力。
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| 关 键 词： | 纳米粒子 碳包铁 退火处理 形成机理 |
| 文章编号： | 1672-6987(2004)01-0030-03 |
| 修稿时间： | 2003-09-09 |
Synthesis and Characterization of Carbon-coated Iron Nanoparticles Produced under C2H2 Atmosphere |
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| ZHANG Xian-ping,ZHANG Zhi-kun,CUI Zuo-lin. Synthesis and Characterization of Carbon-coated Iron Nanoparticles Produced under C2H2 Atmosphere[J]. Journal of Qingdao University of Science and Technology:Natutral Science Edition, 2004, 25(1): 30-33 |
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| Authors: | ZHANG Xian-ping ZHANG Zhi-kun CUI Zuo-lin |
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| Abstract: | Carbon-coated iron nanoparticles was produced under C 2H 2 atmosphere. The nanoparticles, collected from the reactor wall, were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and thermal analysis (TG-DSC) experiments. The samples were annealed at different temperatures under the nitrogen atmosphere. The growth mechanism of the encapsulated iron nanoparticles was discussed. The results show that the samples contain α-Fe, FeC and Fe 3C and no iron oxide appears. Due to the protection of the carbon layer, the acid resistance of the carbon-coated iron nanoparticles is increased, and their oxidation resistance are also enhanced for the same reason. |
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| Keywords: | nanoparticles carbon-coated iron annealing growth mechanism |
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