Facile One-step Synthesis of Ordered Mesoporous Carbons Doped with Nickel Particles

摘要

Ordered mesoporous carbons doped with Ni nanoparticles (DCs) have been prepared by directcarbonization of the composites of a reverse copolymer PPO-PEO-PPO/[Ni(H2O)6](NO3)2/phenolicresin self-assembled in ethanol medium. The effects of the amount of phenolic resin on the porefeatures and structures were analyzed by small-angle X-ray scattering, X-ray diffraction, nitrogenadsorption isotherms and transmission electron microscope. The results showed that the Ni(II) wasreduced into metallic Ni nanoparticle. Moreover, the nickel particle catalyzes the graphitization of o MCs when low amount of phenolic resin was used at relatively low carbonization temperature (800 C)under N2 atmosphere. The DCs have long ordered pore structure when using less amount of phenolicresin such as the ratio of phenol/template is 0.5:1 or o.8:1. However, the pore structure becamedisordered when using high ratio of phenol/template such as 1:1, 1.2:1 or 1.5:1.