| 초록 |
Recently, iron oxide nanoparticles have been extensively studied as drug carriers, contrast agents, heating mediators, and catalysts in many industrial processes. The particle size of iron oxide is a critical factor for almost all of the aforementioned applications. By such reasons, controlled growth of iron oxide NPs is a priority for advanced applications Au NPs were homogeneously synthesized on graphene via adsorption and reduction of corresponding precursors, and used as catalytic template for growth of iron oxide. We found that iron oxide NPs remarkably grow into needlelike structures on Au NP-coated graphene due to catalytic synergy effect of Au NPs and functionalized carbons, compared to graphene. Growth of iron oxide NPs on templates could be easily tuned by controlling the size and quantity of Au NPs on graphene. Such graphene-derivatives showed excellent performance for chemo-selective reduction of nitrobenzenes to their respective anilines under room temperature. |
