TPD-MS study of glassy carbon surfaces oxidized by CO2 and O2
| Autor: | Perić-Grujić Aleksandra A., Nešković Olivera M., Veljković Miomir V., Laušević Mila D., Laušević Zoran V. |
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| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Journal of the Serbian Chemical Society, Vol 67, Iss 11, Pp 761-768 (2002) |
| Druh dokumentu: | article |
| ISSN: | 0352-5139 1820-7421 42914892 |
| DOI: | 10.2298/JSC0211761P |
| Popis: | The temperature-programmed desorption (TPD) method combined with mass spectrometric (MS) analysis has been applied to investigate the surface properties of carbon materials. The apparatus consisting of a temperature-programmed furnace and a quadrupole mass spectrometer was constructed in order to characterize the surface of differently treated glassy carbon samples. In this work, samples of glassy carbon exposed to air, CO2 and O2 were examined. The desorption of H2O,CO and CO2, as major products, indicated the presence of different oxide groups. The amount of these groups for all samples was calculated. It is concluded that oxidation affects the nature and the amount of the surface oxide groups and contributes to their increased stability. |
| Databáze: | Directory of Open Access Journals |
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