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在300℃苯溶剂中,以无水三氯化铝为催化剂,以苯和六氯乙烷为碳源,基于傅克烷基化反应生成三氯乙烯苯,并以之为模块自组装合成了具有叠层结构的碳微米颗粒,其层片厚度为300～500nm.进而在反应体系和反应条件不变的情况下,通过引入铝粉颗粒作为基底成功地诱导出厚度为30～50nm的碳纳米片.实验结果表明,所得碳材料由纳米石墨微晶和非晶碳组成.文中探讨了叠层结构的台阶长大机制,以及碳纳米片在铝粉表面的异质形核机制.
In 300 ℃ benzene solvent, with anhydrous aluminum trichloride as catalyst, benzene and hexachloroethane as carbon source, based on the Friedel-Crafts reaction of trichlorethylene benzene, and as a module self-assembly with a stack Layer structure of carbon microparticles, the ply thickness of 300 ~ 500nm. In the case of the reaction system and the reaction conditions remain unchanged, the introduction of aluminum powder particles as a substrate successfully induced a thickness of 30 ~ 50nm carbon nanosheets. The experimental results show that the obtained carbon material consists of nanocrystalline graphite and amorphous carbon.This paper discusses the mechanism of step-growth of the laminated structure and the heterogeneous nucleation mechanism of carbon nanosheets on the surface of aluminum powder.