Mössbauer Study of Catalytically Grown Carbon Nanotube
LI Qun-qing, FAN Shou-shan, HAN Wei-qiang, GAO Nai-fei, WANG Xin-rong
Department of Physics, Center of Atomic and Molecular Sciences, Tsinghua University, Beijing 100084
Mössbauer Study of Catalytically Grown Carbon Nanotube
LI Qun-qing;FAN Shou-shan;HAN Wei-qiang;GAO Nai-fei;WANG Xin-rong
Department of Physics, Center of Atomic and Molecular Sciences, Tsinghua University, Beijing 100084
关键词 ：
76.80.+y ,
82.80.Ej ,
82.30.Vy
Abstract ： The valence states of iron in iron catalysts, hydrogen reduced catalysts, and catalytically grown carbon nanotubes are determined by Mössbauer spectra, respectively. The results show that the iron exists as Fe, FeO, and α-Fe2 O3 in hydrogen reduced catalysts, whereas it exists as Fe-C alloy, FeO, and α-Fe2 O3 in the catalysts encapsulated in carbon nanotube. It is postulated that Fe in hydrogen reduced catalysts plays the main role in the formation of catalytically grown carbon nanotube.
Key words ：
76.80.+y
82.80.Ej
82.30.Vy
出版日期: 1998-01-01
:
76.80.+y
(M?ssbauer effect; other γ-ray spectroscopy)
82.80.Ej
(X-ray, M?ssbauer, and other γ-ray spectroscopic analysis methods)
82.30.Vy
(Homogeneous catalysis in solution, polymers and zeolites)
引用本文:
LI Qun-qing;FAN Shou-shan;HAN Wei-qiang;GAO Nai-fei;WANG Xin-rong. Mössbauer Study of Catalytically Grown Carbon Nanotube[J]. 中国物理快报, 1998, 15(1): 68-69.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1998/V15/I1/68
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