| 초록 |
Graphene sheets were synthesized by the reaction of partially nirided alumina (PNA) powder under a mixed gas flow of carbon monoxide (CO) and argon. The former powder was obtained by the carbothermal reduction and nitridation of a mixture of Al2O3 and carbon powders under a flow of N2. The graphene sheets, which wrapped alumina particles, were formed by the reduction of CO. The products were characterized by powder X-ray phoroelectron spectroscopy and scanning electron microscopy high-resolution transmission electron microscopy. Their characteristics depended on the species of Al2O3, calcination temperature and duration. The powders are expected to be used as a thermal conductive filler. |
