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Carbon materials with different morphology were prepared by reacting CCl 4 and Mo at 873–1173 K. At 873–973 K, hollow spheres (diameter: 1–3 μm, shell thickness: 50 nm) were obtained. At 1073 K, particles (diameter: 50–100 nm) encapsulated in spherical shells (diameter: 1–5 μm) were collected. At 1173 K, formation of particles (diameter: 200–300 nm) was observed. Mo acted as a reagent to remove...
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