Abstract
Mesoporous carbon (MC) was prepared from mesoporous silica (SBA-15) via a conventional templating method for use as a Pt-Ru catalyst support in fuel cells. The effect of surface modifications of the carbon support at different pH on the electrochemical activities of the Pt-Ru/MC catalysts was investigated. The Pt-Ru nanoparticle size and loading were dependent on the surface characteristics of the MC. Base-modified MC-supported Pt-Ru showed the smallest average nanoparticle size (3.3. nm) and the highest loading (77%) among the chemically modified MC-supported Pt-Ru catalysts. The electrochemical activity of the catalysts was enhanced when the MC supports were treated with basic or neutral agents rather than by acid modification.
| Original language | English |
|---|---|
| Pages (from-to) | 150-156 |
| Number of pages | 7 |
| Journal | Journal of Colloid and Interface Science |
| Volume | 405 |
| DOIs | |
| Publication status | Published - 1 Sept 2013 |
| Externally published | Yes |
Keywords
- Electrochemical activity
- Mesoporous carbon
- Pt-Ru catalyst
- Surface modification
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