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Graphene/ZnO (G/ZnO) composites were synthesized for the first time by a wet chemical method. X-ray diffraction and transmission electron microscopy analyses demonstrated that ZnO nanoparticles with an average diameter of about 5nm uniformly covered the graphene surfaces. G/ZnO composites were dispersed in methyl methacrylate (MMA), polymerized at 75°C for 30–35min, and finally, dried at 45°C for...
A phase transfer protocol for graphene oxide (GO) was demonstrated with a long chain alkylamine–dodecylamine (DDA) as phase transfer agent. By this method, GO sheets can be easily transferred from water to various low polar organic solvents such as cyclohexane, petroleum ether, kerosene, toluene, carbon tetrachloride, etc. through forming noncovalent DDA–GO hybrids. The reversible phase transfer of...
Herein, a simple template-free method to the preparation of hexagonal carbon microtubes by pyrolysis of zinc tetrapyridylporphine (ZnTPyP) was reported. With cetyltrimethyl ammonium bromide as the auxiliary agent, ZnTPyP molecules assemble into hexagonal microtubes. Corresponding ZnTPyP microtubes and microrods can be selectively fabricated by changing the concentration of tetrapyridylporphine (TPyP)...
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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