▎ 摘　　要

Graphene-supported carbon-coating cobalt and carbon nanoshells (Co/C-GNS and CNS-GNS) were fabricated and their applications in absorbing toxic gases and smoke have been investigated. Co3O4-loaded reduced graphite oxide was first prepared via a coprecipitation process, then carbon coatings on cobalt nanoparticles were fabricated by a catalytic carbonization process. The obtained hybrids were characterized by X-ray diffraction, transmission electron microscopy, Raman spectroscopy, N-2 absorption/desorption, and thermogravimetric analysis. Co/C core/shell structure and hollow carbon nanoshells in the size range of 15-22 nm were anchored onto the graphene surfaces. The resultant Co/C-GNS and CNS-GNS performed an important function in CO removal and smoke suppression during the combustion of acrylonitrile-butadiene-styrene. The good performance could be attributed to the combination effect of physical barrier of the GNS, porosity structure of the carbon nanoshells, and carbonization of the Co nanoparticles. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40457.