| 초록 |
Uniform distribution of platinum nanoparticles on porous carbons is dependant on surface functional groups of support and impregnation conditions of aqueous solution. In the study, nitrogen functional groups were doped on ACF by urea treatment, and Pt-loading was carried out by impregnation of PtCl62- and heating the PtCl62- impregnated N-ACF (nitrogen-doped ACF) up to 700 ℃. Nitrogen functional groups doped on ACF were confirmed by XPS and N2 adsorption isotherms were measured to investigate the structural property changes. Effective impregnation of PtCl62- was controlled by changing the aqueous solution conditions. Heat treatment was progressed to decompose the PtCl62- to Pt-nanoparticles. After nitrogen functional groups were doped on ACF, BET specific surface area decreased from 1476 to 1419 and total pore volume and micropore volume decreased a little. About 30 % of Pt-loading was enhanced by doping nitrogen functional groups. |
