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以石墨粉为碳源,Al为催化剂,采用两步真空热处理法,进行洋葱状富勒烯(OLFs)的合成研究.用高分辨透射电子显微镜(HRTEM)、X射线衍射仪(XRD)对产物进行表征.结果表明:800℃真空热处理后,产物中存在大量石墨碎片、非晶碳球和金属微粒;1800℃真空热处理后,产物中出现大量OLFs,且晶化程度很高,结构较完善,粒径较均匀(约15~35nm).此外,探讨了OLFs的生成机理.

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