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化学学报
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化学学报 ›› 1999, Vol. 57 ›› Issue (4): 383-388. 上一篇    下一篇

研究论文

石墨多壳层形成物的离壳生长现象

王震遐;杨锦晴;王玟珉;俞国庆;阮美玲   

  1. 中国科学院上海原子核研究所.上海(201800);中国科学院上海硅酸盐研究所.上 海(200050);中国科学院高性能陶瓷和超微结构国家重点实验室
  • 发布日期:1999-04-15

"Out-of-shell growth" of graphite multiwalled

Wang Zhenxia;Yang Jinqing;Wang Minmin;Yu Guoqing;Ruan Meiling   

  1. Inst Nucl Res., CAS.Shanghai(201800);Shanghai Inst Ceram., CAS. Shanghai(200050)
  • Published:1999-04-15

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用高分辨透射电子显微镜(HRTEM)表征了在特定电弧放电条件下(碳阴极,钯管阳极)产生的石墨多壳层结构。看到了各种各样的,由多层石墨壳组成,大小从约2nm到20nm以上的多面体。对它们当中一些多面体所表现出来的自组装(self-assembly)"离壳生长"(out-of-shellgrowth)现象作了鉴定,并对其生长机制进行了讨论。

关键词: 石墨, 透射电子显微术, 纳米相材料, 离壳生长

High resolution transmission electron microscopy (HRTEM) was used to characterize the multiwalled graphitic shell structures which were found in the cathodic deposits produced under specific arc-discharge conditions (with carbon as cathode and a palladium tube filled with MoS~2 as anode). a variety of polyhedrons consisting of multiwalled graphitic shell of sizes ranging from ～2nm to more than 20nm was revealed. A novel phenomenon of "out-of-shell growth" of the self- assembled polyhedron was examined and the growth mechanism was discussed.

Key words: GRAPHITE, TRANSMISSION ELECTRON MICROSCOPY, NANOPHASE MATERIALS

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