Study of carbon nanomaterials as potential sorbents to concentrate admixtures in the atomic spectroscopy analysis methods

Carbon nanomaterials (CNM) obtained by the catalytic pyrolysis of ethanol vapors are characterized with respect to their morphology, chemical purity, and sorption capacity. The efficacy of their usage to concentrate metal ions by sorption is demonstrated. The change in the sorption capacity of CNM i...

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Bibliographic Details
Published in:Inorganic materials 2009-12, Vol.45 (14), p.1559-1563
Main Authors: Grazhulene, S. S., Red’kin, A. N., Telegin, G. F., Zolotareva, N. I.
Format: Article
Language:English
Subjects:
Annealing
Carbon
Chemistry
Chemistry and Materials Science
Ethyl alcohol
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Metal ions
Nanomaterials
Reduction
Sorption
Surface chemistry
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Summary:Carbon nanomaterials (CNM) obtained by the catalytic pyrolysis of ethanol vapors are characterized with respect to their morphology, chemical purity, and sorption capacity. The efficacy of their usage to concentrate metal ions by sorption is demonstrated. The change in the sorption capacity of CNM in different treatments of materials is explained by the surface modification by the oxygen-containing functional groups and their destruction upon annealing. This is confirmed by chemical and thermogravimetric analysis methods. The optimal conditions to concentrate a series of metal ions from water solutions for determining further flame atomic adsorption are found. This allowed the reduction of the detection limits by one to two orders of magnitude. The correctness of the determination is confirmed by the method of additions and the analysis of standard samples.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168509140088