Graphitization-induced microstructural changes in tetrahydrofuran-derived pyrolytic carbon spheres

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	Graphitization-induced microstructural changes in tetrahydrofuran-derived pyrolytic carbon spheres
	B. Zhang; S. Bai; H. M. Cheng; Q. K. Cai
	2006
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	21 期号:9 页码:2198-2203
摘要	This article is a study of monodispersed, submeter-sized solid carbon spheres having smooth surfaces and almost perfectly round shapes. These spheres were synthesized by pyrolysis of tetrahydrofuran in the absence of a catalyst. Microstructures of carbon spheres before and after graphitization were systematically investigated using electron microscopy, thermogravimetric analysis, and x-ray diffraction. The sphere is believed to consist of an underdeveloped spiral-shell core and a surface with discrete fragments of concentrically arranged graphene layers. Under lower temperature heat treatment, the underdeveloped spiral-shell structure changes to a well-developed spiral-shell structure. After graphitization, the spiral-shell core is shown to transform into continuous and closed polyhedral secondary shells, whereas the exterior discrete fragments of graphene sheets transform into discontinuous polyhedral surface shells. The mechanisms of these microstructural changes are discussed.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ne univ technol, sch met & mat, shenyang 110004, peoples r china.;cheng, hm (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;cheng@imr.ac.cn
关键词	Oxide-catalytic Carbonization Particles Blacks
URL	查看原文
WOS记录号	WOS:000240578900007
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34673
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Zhang,S. Bai,H. M. Cheng,et al. Graphitization-induced microstructural changes in tetrahydrofuran-derived pyrolytic carbon spheres[J]. Journal of Materials Research,2006,21(9):2198-2203.
APA	B. Zhang,S. Bai,H. M. Cheng,&Q. K. Cai.(2006).Graphitization-induced microstructural changes in tetrahydrofuran-derived pyrolytic carbon spheres.Journal of Materials Research,21(9),2198-2203.
MLA	B. Zhang,et al."Graphitization-induced microstructural changes in tetrahydrofuran-derived pyrolytic carbon spheres".Journal of Materials Research 21.9(2006):2198-2203.