Open AccessTPD-MS study of glassy carbon surfaces oxidized by CO2 and O2
Author(s) -
Aleksandra PerićGrujić,
M Olivera Neskovic,
Veljko Veljković,
D Mila Lausevic,
V Zoran Lausevic
Publication year - 2002
Publication title -
journal of the serbian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 45
eISSN - 1820-7421
pISSN - 0352-5139
DOI - 10.2298/jsc0211761p
Subject(s) - desorption , thermal desorption spectroscopy , glassy carbon , oxide , carbon fibers , mass spectrometry , quadrupole mass analyzer , analytical chemistry (journal) , chemistry , materials science , organic chemistry , adsorption , chromatography , composite material , electrochemistry , cyclic voltammetry , electrode , composite number
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.