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Mass‐analysed temperature‐programmed desorption from glassy carbon
Author(s) -
Laušević M.,
Popović A.,
Laušević Z.
Publication year - 1990
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290041210
Subject(s) - chemistry , desorption , thermal desorption spectroscopy , glassy carbon , oxide , analytical chemistry (journal) , carbon fibers , thermal desorption , deposition (geology) , thermal stability , mass spectrometry , adsorption , electrochemistry , chromatography , organic chemistry , materials science , composite material , cyclic voltammetry , paleontology , electrode , sediment , composite number , biology
The modification of the glassy carbon surface in contact with AgNO 3 solution has been studied using X‐ray diffraction and Brunauer, Emmett and Teller (BET) surface analysis methods. The deposition of metallic silver, confirmed by X‐ray analysis, affected the pore system resulting in a decrease of surface area and pore volume. The thermal decomposition of the surface oxide species resulting in desorption of H 2 O, CO and CO 2 as major gas products has been studied using a temperature‐programmed desorption method combined with a mass spectrometric analysis of the desorbed gases. The desorption energies have been calculated using a peak position method. It has been concluded that the silver deposition on the glassy carbon surface contributes to the increased stability of surface oxide species.