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Fullerene (C 60 , C 70 ) hollow spheres were fabricated by controlled oxidation of fullerene monoanions under solvothermal conditions. Scanning electron microscope and transmission electron microscope showed the uniform size and the hollow nature of the spheres. Matrix-assisted laser desorption ionization time-of-flight mass spectrum and Raman spectroscopy proved that the hollow spheres...
A composite structure consisting of hollow nickel microspheres coated with oriented carbon nanotubes (CNTs) was synthesized via chemical vapor deposition at 800°C. The hollow microspheres were composed of discrete Ni nanoparticles which acted as the catalyst. FESEM images showed that the CNTs grew on the surface of the Ni spheres. HRTEM, Raman and XRD analyses showed that the CNTs were highly graphitized...
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