Micro-structural Features of Co-filled Carbon Nanotubes

Abstract

Abstract: Cobalt-filled carbon nanotubes were prepared in situ in the decomposition of benzene over Co/silica-gel
catalysts. Transmission electron microscopy (TEM) investigation showed that the products contained abundance of carbon nanotubes (CNTs) and most of them
were filled with metallic nanoparticles or nanorods. High-resolution TEM (HRTEM), selected area electron diffraction (SAED) patterns and energy
dispersive X-ray spectroscopy (EDS) confirmed the presence of Co inside the nanotubes. The encapsulated Co was further identified as alpha-Co with fcc
structure, which frequently consists of twinned boundaries. Based on the experimental results, a possible growth mechanism of the Co-filled nanotubes
was proposed.

Key words: carbon nanotubes, catalysis, Co/silica-gel, microstructure

CLC Number:

TQ127

MA Xi-Cheng,ZHENG Guo-Bin,FENG Jing-Wei,LI Feng-Zhao,WEN Shu-Lin. Micro-structural Features of Co-filled Carbon Nanotubes[J]. Journal of Inorganic Materials.

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Micro-structural Features of Co-filled Carbon Nanotubes

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