中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 28 No. 11 November 2018 |
（1. College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
2. College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
3. Sinopec Research Institute of Petroleum Engineering, China Petroleum Chemical Corporation, Beijing 100101, China;
4. Collaborative Innovation Center of Coal Work Safety of Henan Province, Jiaozuo 454003, China）
Abstract:The reduced graphene oxide (rGO) supported cobalt oxide nanocatalysts were prepared by the conventional precipitation and hydrothermal method. The as-prepared rGO-Co3O4 was characterized by the XRD, Raman spectrum, SEM, TEM, N2-sorption, UV-Vis, XPS and H2-TPR measurements. The results show that the spinel cobalt oxide nanoparticles are highly fragmented on the rGO support and possess uniform particle size, and the as-prepared catalysts possess high specific surface area and narrow pore size distribution. The catalytic properties of the as-prepared rGO-Co3O4 catalysts for CO oxidation were evaluated through a continuous-flow fixed-bed microreactor-gas chromatograph system. The catalyst with 30% (mass fraction) reduced graphene oxide exhibits the highest activity for CO complete oxidation at 100 °C.
Key words: reduced graphene oxide; cobalt oxide; catalyst; CO oxidation; catalytic activity
