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Growing carbon nanotubes (CNTs) perpendicularly to the surface of submicron-size SiO 2 spheres by pyrolyzing iron(II) phthalocyanine (FePc) is reported for the first time in this paper. The large curvature isolates the nanotubes and forms unique structures. The density, lengths and morphology of CNTs on SiO 2 spheres can be controlled by varying the experimental conditions. A method...
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