AI Article Synopsis
- Researchers created new types of carbon nanostructures by chlorinating metallocenes like ferrocene and cobaltocene, as well as NbC, at temperatures ranging from 100 to 900 degrees Celsius.
- The process resulted in amorphous carbon nanotubes with varying sizes from ferrocene, while cobaltocene primarily yielded solid amorphous nanospheres.
- The use of NbC led to the formation of nanospherical particles with improved structural order and also resulted in NbC crystallites encased in an amorphous carbon layer at lower temperatures.
Article Abstract
In this work we report some new well-defined carbon nanostructures produced by direct chlorination of metallocenes (ferrocene and cobaltocene) and NbC, at temperatures from 100 to 900 degrees C. Thus, amorphous carbon nanotubes with variable dimensions depending on reaction temperature were produced from ferrocene. When cobaltocene is the carbon precursor the main product are solid amorphous nanospheres. The high refractory metal carbide NbC as carbon source favours the growth of nanospherical cabbage-like particles with a higher degree of graphene sheets order. Besides, NbC crystallites encapsulated in an amorphous carbon shell were also found at lower temperatures (T< or =700 degrees C).
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| http://dx.doi.org/10.1016/j.micron.2006.06.002 | DOI Listing |
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