| 炭微球的结构演变:从实心到中空(英文) |
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| 引用本文： | 杨永珍,刘旭光,罗秋苹,金琳,许并社.炭微球的结构演变:从实心到中空(英文)[J].新型炭材料,2010,25(6). |
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| 作者姓名： | 杨永珍 刘旭光 罗秋苹 金琳 许并社 |
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| 作者单位： | 1. 新材料界面科学与工程教育部重点实验室(太原理工大学),山西,太原,030024;太原理工大学,材料科学与工程学院,山西,太原,030024
2. 新材料界面科学与工程教育部重点实验室(太原理工大学),山西,太原,030024;太原理工大学,化学化工学院,山西,太原,030024 |
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| 基金项目： | Changjiang Scholar and Innovative Research Team in University(IRT0972); National Natural Science Foundation of China(20971094); International S&T Cooperation Program(2007DFA50940); Natural Science Foundation of Shanxi Province(2009011012-4); International S&T Cooperation Program of Shanxi Province(2009081018,2010081017); Shanxi Research Fund for Returned Scholars(2008-31)~~ |
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| 摘 要： | 采用简单的空气氧化法由实心炭微球制备中空结构的炭微球。通过场发射扫描电子显微镜、高分辨透射电子显微镜、X-射线衍射仪、拉曼光谱和热重分析仪对产物的形貌和结构进行表征。结果表明:中空炭微球的石墨化程度较低。在炭微球的空气热氧化过程中,反应温度对炭微球从实心到中空的结构演变起着关键性的作用,温度越高,中空炭微球的内径越大、壁越薄。其形成机理可认为是炭微球的曲率和结晶度协同作用的结果。亦即,实心炭微球进行热氧化时,其内部的大曲率和低结晶度更易氧化,以致形成中空炭微球。
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| 关 键 词： | 炭微球 氧化 中空炭微球 形成机理 |
Structure evolution of carbon microspheres from solid to hollow |
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| YANG Yong-zhen,LIU Xu-guang,LUO Qiu-ping,JIN Lin,XU Bing-she.Structure evolution of carbon microspheres from solid to hollow[J].New Carbon Materials,2010,25(6). |
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| Authors: | YANG Yong-zhen LIU Xu-guang LUO Qiu-ping JIN Lin XU Bing-she |
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| Affiliation: | YANG Yong-zhen1,2,LIU Xu-guang 1,3,LUO Qiu-ping 1,JIN Lin 1,XU Bing-she 1,2(1.Key Laboratory of Interface Science and Engineering in Advanced Materials(Taiyuan University of Technology),Ministry of Education,Taiyuan030024,China,2.College of Materials Science and Engineering,Taiyuan University of Technology,3.College of Chemistry and Chemical Engineering,China) |
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| Abstract: | Hollow carbon microspheres,several micrometers in diameter,were prepared from solid carbon microspheres by a simple oxidation-in-air process.The morphology and structure of these products were characterized by field-emission scanning electron microscopy,high-resolution transmission electron microscopy,X-ray diffraction,Raman spectroscopy,and thermogravimetry.Results indicate that heat treatment temperature in air plays a key role in the evolution of the cavity size and wall thickness of the hollow carbon mi... |
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| Keywords: | Carbon microspheres Oxidation Hollow carbon microspheres Formation mechanism |
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