Ammonia adsorption on multi-walled carbon nanotubes
| Autor: | Justine Kombarakkaran, Tanja Pietraß, Catherine F. M. Clewett |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Inorganic chemistry Selective chemistry of single-walled nanotubes General Physics and Astronomy Resonance Carbon nanotube Electron law.invention Optical properties of carbon nanotubes Condensed Matter::Materials Science Ammonia chemistry.chemical_compound chemistry Chemical engineering law Physics::Chemical Physics Physical and Theoretical Chemistry Spectroscopy Electron paramagnetic resonance |
| Zdroj: | Chemical Physics Letters. 441:282-285 |
| ISSN: | 0009-2614 |
| Popis: | Electronic properties of multi-walled carbon nanotubes are investigated with electron spin resonance (ESR) spectroscopy in light of their application as chemosensors. The nanotubes were exposed to ammonia both before and after an oxidative purification procedure. Ammonia exposure affects most strongly the resonance stemming from conduction electrons at ambient temperature, and that from intrinsic defects at 5 K. The strong interaction with ammonia even at ambient temperature holds promise for use of multi-walled carbon nanotubes as chemosensors, as also shown in other work. The ESR technique provides a simple method to investigate the potential of a sensor material in bulk. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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