原子尺度分析钼在铁催化的碳纳米管生长中的作用。

Atomic-scale analysis on the role of molybdenum in iron-catalyzed carbon nanotube growth.

机构信息

Graduate School of Science, Osaka University, 1-1 Machikane-yama, Toyonaka, Osaka, 560-0043, Japan.

出版信息

Nano Lett. 2009 Nov;9(11):3810-5. doi: 10.1021/nl9019903.

DOI:10.1021/nl9019903

PMID:19731921

Abstract

We have elucidated the synergetic role played by molybdenum in iron-catalyzed chemical vapor deposition growth of carbon nanotubes (CNTs) by in situ environmental transmission electron microscopy. Molybdenum can be well accommodated by Fe-based carbide nanoparticle catalysts of M(23)C(6)-type structure (M = Fe and Mo). We have also shown that molybdenum suppresses the nucleation of iron compounds that are known to exhibit no catalytic activity for the growth of CNTs.

摘要

我们通过原位环境透射电子显微镜阐明了钼在铁催化的化学气相沉积生长碳纳米管（CNT）中的协同作用。钼可以很好地容纳在 M（23）C（6）型结构的 Fe 基碳化物纳米颗粒催化剂（M = Fe 和 Mo）中。我们还表明，钼抑制了已知对 CNT 生长没有催化活性的铁化合物的成核。