A novel approach to carbon hollow spheres and vessels from CCl4 at low temperatures

Carbon hollow spheres (400–600 nm) and vessels (400 nm × 3000 nm) have been synthesized from sp3-CCl4 at 190 and 230 °C, respectively. The HRTEM images and Raman spectra reveal the sp2 nature of the as-obtained products, indicating that the transformation from carbon sp3 to sp2 occurs in the reactions. The possible mechanism has also been proposed.