Synthesis of Pt/PEI-MWCNT composite materials on polyethyleneimine-functionalized MWNTs as supports
- Title
- Synthesis of Pt/PEI-MWCNT composite materials on polyethyleneimine-functionalized MWNTs as supports
- Other Titles
- PEI-MWCNT composite materials on polyethyleneimine-functionalized MWNTs as supports
- Author
- 이성철
- Keywords
- A. Metals; A. Nanostructures; A. Composites; C. Electron microscopy
- Issue Date
- 2011-12
- Publisher
- Elsevier Science B.V., Amsterdam.
- Citation
- Materials research bulletin, 2011, 46(12), P.2433-2440
- Abstract
- Composite materials with highly dispersed platinum (Pt) nanoparticles on multiwalled carbon nanotubes (MWCNTs), functionalized with polyethyleneimine (PEI) by a noncovalent method were prepared. The PEI-functionalization provided high density homogeneous functional groups on the MWCNTs’ sidewalls for binding Pt nanoparticles. Cationic PEI leads to homogeneous dispersion in solutions such as water and organic solvents. The effects of a reducing agent on the Pt nanoparticles that form on the surfaces of the MWCNT were studied by varying the molar ratio of NaOH to H2PtCl6. These composite materials were characterized with transmission electron micrograph (TEM), X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS). The Pt/PEI–MWCNT catalyst exhibits excellent electrocatalytic activity and compared with Pt/PVP–MWCNT catalysts obtained with polyvinylpyrrolidone (PVP). Finally, the cyclic voltammogram of methanol electrooxidation for Pt/PEI–MWCNT shows better tolerance to CO and methanol oxidation to CO2 than of Pt/PVP–MWCNT.
- URI
- https://www.sciencedirect.com/science/article/pii/S0025540811004028?via%3Dihubhttp://hdl.handle.net/20.500.11754/65874
- ISSN
- 0025-5408
- DOI
- 10.1016/j.materresbull.2011.08.025
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML