Reducing Reaction of Fe3O4 in Nanoscopic Reactors of a-CNTs
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- 作者：Fangyu Cao ; Kaifu Zhong ; Aimei Gao ; Changle Chen ; Quanxin Li ; Qianwang Chen
- 刊名：Journal of Physical Chemistry B
- 出版年：2007
- 出版时间：February 22, 2007
- 年：2007
- 卷：111
- 期：7
- 页码：1724 - 1728
- 全文大小：264K
- 年卷期：v.111,no.7(February 22, 2007)
- ISSN：1520-5207
文摘
A reduction of Fe3O4 nanowires in nanoscopic reactors of amorphous C:H nanotubes (a-CNTs) was taken tounderstand features of the chemical reaction mechanism in nanoscale reactors. Fe3O4 nanowires encapsulatedin a-CNTs were reduced into iron at a relatively low temperature of 570 
C, producing iron nanoparticlesencapsulated in CNTs accompanied by the crystallization of the a-CNT shell. It was found that carbon in thea-CNT shell rather than hydrogen (5.5 wt % in it) reduced Fe3O4, showing features different from those ina macroscopic system. The possible mechanisms behind this phenomenon are discussed.
C, producing iron nanoparticlesencapsulated in CNTs accompanied by the crystallization of the a-CNT shell. It was found that carbon in thea-CNT shell rather than hydrogen (5.5 wt % in it) reduced Fe3O4, showing features different from those ina macroscopic system. The possible mechanisms behind this phenomenon are discussed.