Effect of different microwave-based treatments on multi-walled carbon nanotubes
| Autor: | George P. Simon, Pejman Hojati-Talemi, Raoul Cervini |
|---|---|
| Přispěvatelé: | Hojati, Talemi Pejman, Cervini, R, Simon, George |
| Rok vydání: | 2009 |
| Předmět: |
Materials science
microwave Selective chemistry of single-walled nanotubes chemistry.chemical_element Bioengineering Carbon nanotube law.invention Condensed Matter::Materials Science symbols.namesake X-ray photoelectron spectroscopy law General Materials Science Composite material Thermal oxidation carbon nanotubes x-ray photoelectron spectroscopy General Chemistry Condensed Matter Physics Atomic and Molecular Physics and Optics chemistry Chemical engineering Modeling and Simulation chemical functionalization symbols Surface modification Raman spectroscopy Carbon Microwave |
| Zdroj: | Journal of Nanoparticle Research. 12:393-403 |
| ISSN: | 1572-896X 1388-0764 |
| DOI: | 10.1007/s11051-009-9609-y |
| Popis: | Three new methods for the functionalization of multi-walled carbon nanotubes (MWCNTs) are reported using microwave (MW) energy and water as a mild chemical agent. In the first method we reported the effect of MW irradiation on a dispersion of MWCNTs in deionized water, in the second method we studied the exposing of MWCNT to microwave irradiation in the presence of steam, and in the third method we used microwave oven-generated plasma for the functionalization of MWCNTs. We also performed thermal oxidation and acid treatment as two conventional methods for oxidative functionalization of carbon nanotubes, to compare their effect with our results. Transmission electron microscopy (TEM) and Raman spectroscopy results showed that although these microwave methods introduced some defects to the carbon nanotubes, the damage was less severe than conventional treatments. X-ray photoelectron spectroscopy (XPS) measurements confirmed that the functionalization of carbon nanotubes by these methods favored hydroxyl groups, which are useful when further functionalization is required. |
| Databáze: | OpenAIRE |
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