Journal ArticleDOI
The characterization of activated carbons with oxygen and nitrogen surface groups
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TLDR
The physicochemical properties and the surface chemical structure of the carbon materials obtained by the modification of the commercial activated carbon D43/1 (Carbo-Tech, Essen, Germany) were studied in this article.About:
This article is published in Carbon.The article was published on 1997-01-01. It has received 1342 citations till now. The article focuses on the topics: Carbon & Activated carbon.read more
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Modification of the surface chemistry of activated carbons
TL;DR: In this paper, a deconvolution method is proposed to analyze the TPD spectra, allowing for the quantitative determination of the amount of each functional group on the surface. But the deconvolutions are not suitable for the analysis of a large number of functional groups.
Journal ArticleDOI
Graphene oxide dispersions in organic solvents.
TL;DR: In all of these solvents, full exfoliation of the graphite oxide material into individual, single-layer graphene oxide sheets was achieved by sonication, and graphene oxide dispersions exhibited long-term stability and were made of sheets between a few hundred nanometers and a few micrometers large.
Journal ArticleDOI
Surface oxides on carbon and their analysis: a critical assessment
TL;DR: The methods for the determination of various types of oxygen surface functions on carbon materials are briefly described, and their relative advantages and problems that may arise are discussed in this paper, where acidimetric titration techniques, IR spectroscopy, XPS, thermal desorption spectroscopic, and electrokinetic measurements are described.
Journal ArticleDOI
Combined Effect of Nitrogen- and Oxygen-Containing Functional Groups of Microporous Activated Carbon on its Electrochemical Performance in Supercapacitors
TL;DR: In this article, the surface chemistry is affected by the type of nitrogen precursor and specific groups present on the surface before the treatment leading to the incorporation of nitrogen, and the most important functional groups affecting energy storage performance are pyrrolic and pyridinic nitrogen along with quinone oxygen.
Journal ArticleDOI
A review on surface modification of activated carbon for carbon dioxide adsorption
TL;DR: The influence of surface modification of activated carbon with gaseous ammonia on adsorption properties toward carbon dioxide (CO2) was reviewed in this paper, where two different methods, heat treatment and ammonia treatment (amination) for producing activated carbon had been compared and amination was found to be suitable modification technique for obtaining efficient CO2 adsorbents.
References
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Journal ArticleDOI
Some aspects of the surface chemistry of carbon blacks and other carbons
TL;DR: In this paper, a review of the surface chemistry of carbon blacks and other activated carbons is given, focusing on surface oxides with emphasis on the chemical methods used in the assessment and identification of surface functional groups.
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Evolution of nitrogen functionalities in carbonaceous materials during pyrolysis
TL;DR: In this paper, X-ray photoelectron spectroscopy (XPS) was used to investigate the fate of nitrogen functional forms present in a lignite and its chars, derived from the model compounds acridine, carbazole and polyacrylonitrile (PAN).
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Study of oxygen-containing groups in a series of graphite oxides: physical and chemical characterization.
C. Hontoria-Lucas,Antonio J. López-Peinado,J. de D. López-González,M.L. Rojas-Cervantes,Rosa M. Martín-Aranda +4 more
TL;DR: In this paper, the influence of the oxidation degree on the appearance and evolution of new chemical groups in graphite oxides has been analyzed, which confirm the existence of hydroxyl, carbonyl, ether, epoxy, and peroxy groups in the more oxidized samples.
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XPS of nitrogen-containing functional groups on activated carbon
R. J. J. Jansen,H. van Bekkum +1 more
TL;DR: In this paper, the binding energy of surface groups on several nitrogen-containing activated carbons was investigated and it was shown that the modification method governs the type of nitrogen function formed: ammoxidation leading to amides, animation to lactams and imides and further heat treatment to pyridine and pyrrole groups.