| 초록 |
In my study, Pt-NS@RGO composites were prepared by a simple solvothermal treatment. Pyridinic and graphitic N in the NS@RGO framework enhanced the electro-catalytic performance as well as electron transfer in methanol oxidation reaction. Also, Thiophenic S in the NS@RGO framework enhanced their catalytic activity as well as interaction between catalyst support and metal catalyst. It is attributed to preventing Pt nanoparticles from aggregation in aqueous solution, resulting long-term durability in DMFC operation. In addition, The Pt-NS@RGO composites exhibited excellent electro-catalytic active area and higher methanol oxidation current density than others. The structure, morphology and composition of Pt-NS@RGO composites were measured by SEM, TEM and FT-IR. Also, the electro-catalytic properties of Pt-NS@RGO composites were evaluated by CV and CA. |
