Determination of the Surface Oxidation Degree of the Carbonaceous Materials by Quantitative TG-MS Analysis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F17%3AA1701KK1" target="_blank" >RIV/61988987:17310/17:A1701KK1 - isvavai.cz</a>
Result on the web
<a href="http://pubs.acs.org/doi/full/10.1021/acs.analchem.6b03914" target="_blank" >http://pubs.acs.org/doi/full/10.1021/acs.analchem.6b03914</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.analchem.6b03914" target="_blank" >10.1021/acs.analchem.6b03914</a>
Alternative languages
Result language
angličtina
Original language name
Determination of the Surface Oxidation Degree of the Carbonaceous Materials by Quantitative TG-MS Analysis
Original language description
The developed quantitative TG-MS analysis was used for the determination of the surface oxidation degree of activated carbon cryogels. The surface chemistry of a prepared carbon cryogels pyrolyzed at 400 and 500 °C was modified using H3PO4, Fenton-like reaction, (NH4)2S2O8 with H2SO4 and HNO3 with H2O2 into a different surface oxidation degree. The influence of activation method and the amount of oxygen surface groups were characterized by elemental analysis, immersion calorimetry, water vapor adsorption, and Boehm titration. The obtained results from these methods were compared with the amount of surface oxygen determined by TG-MS. It was found out, that with the more intensive oxidation method (Fenton < (NH4)2S2O8 with H2SO4 < HNO3 with H2O2) the concentration of oxygen-containing surface groups increases, which lead to considerably higher parameters of immersion heat, amount of adsorbed water and acidity of the sample surface. The H3PO4 treatment of carbon cryogels causes no significant changes in the surface chemistry. The results obtained from the TG-MS analysis imply the good agreement with the results obtained from other used methods. It was proved that the quantitative TG-MS analysis could be a useful tool for the characterization of the surface of the carbonaceous materials.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
<a href="/en/project/LO1208" target="_blank" >LO1208: Theoretical aspects of Energetic treatment of Waste and Environment Protection against negative impacts</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ANAL CHEM
ISSN
0003-2700
e-ISSN
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Volume of the periodical
89
Issue of the periodical within the volume
January
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
1710-1715
UT code for WoS article
000393738300044
EID of the result in the Scopus database
2-s2.0-85026788534