Abstract
We report the preparation of well-dispersed Pt nanoparticles depositing on Mn3O4-modified multi-walled carbon nanotubes (Mn 3O4-MWCNTs) that can be taken as high performance catalyst in methanol electro-oxidation. Various spectrometry techniques such as FT-IR, Raman, XRD, TEM and XPS measurements were performed, revealing that the Pt nanoparticles were highly dispersed on the surface of Mn3O 4-modified MWCNTs with a narrow size distribution between 1.7 nm and 3.9 nm. Compared the Pt/MWCNT catalyst without Mn3O4 modification, the Pt/Mn3O4-MWCNT composite catalyst not only shows relative large electrochemical active surface area (EAS), high catalyzing activity toward methanol electro-oxidation, but also exhibits very high stability with apparent anti-poisoning tolerance to the incomplete oxidized species during methanol oxidation.
Original language | English |
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Pages (from-to) | 11167-11175 |
Number of pages | 9 |
Journal | International Journal of Hydrogen Energy |
Volume | 37 |
Issue number | 15 |
DOIs | |
Publication status | Published - Aug 2012 |
Externally published | Yes |
Keywords
- Electrocatalysis
- Fuel cells
- MnO
- Multi-walled carbon nanotubes
- Pt nanoparticles