| 초록 |
Among the various supports, activated carbon is regarded as attractive material due to low cost and resistance to acidic and basic conditions. However, the pristine activated carbon has inert surface, which contributes poor interaction between metal and support. Herein, we investigated that the effect of pretreatment method of activated carbon on particle size and distribution of Pt. The pristine activated carbon was functionalized by acid treatment such as mixed of H2NO3 and H2SO4, HCl, and H2O2. The Pt/C catalysts were prepared by deposition-precipitation method. The activated carbon pretreated with H2NO3 and H2SO4 mixed solutions showed relatively high amount surface oxygen acidic groups than HCl and H2O2. The CO-chemisorption results showed that Pt/C catalyst prepared using the carbon support pretreated with H2NO3 and H2SO4 showed the highest Pt dispersion of 28%. We confirmed that the amount of surface acidic groups of activated carbon affected the metal and support interaction. |
