Selective Sorption of Phenol and Related Compounds from Aqueous Solutions onto Graphitized Carbon Black. Adsorption and Flow Microcalorimetric Studies

Adsorption of anionic sodium hexadecyl sulfate (SHS) and nonionic Triton X surfactants with different ethoxylation degree: TX-45, TX-100 and TX-300 from their individual and mixed aqueous solutions at the surface of thermally graphitized carbon black (CB) was studied. It was found that at low solution concentrations addition of the nonionic surfactant increases the amount of SHS adsorbed from SHS/Triton X mixtures compared to SHS amount adsorbed from its individual solution. These findings might be explained by decreasing in electrostatic repulsion between SHS ions due to inclusion of the molecules of the nonionic surfactant in the mixed adsorption layer. At higher solution concentrations, adsorption of SHS decrease as a result of displacement of SHS ions from the mixed adsorption layer by Triton X molecules. It was established that the composition of the mixed adsorption layer at CB surface notably differ from the composition of the surfactant mixture in the bulk solution. The mixed adsorption layer is enriched with the molecules of the nonionic surfactants and this conclusion is confirmed by the results of measuring zeta potential of CB particles with the adsorbed surfactants.

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Heats of adsorption of gold chloride and cyanide complexes from aqueous solutions on graphitized carbon black and a coconut active carbon

Carbon ◽

10.1016/0008-6223(91)90156-d ◽

1991 ◽

Vol 29 (7) ◽

pp. 821-829 ◽

Cited By ~ 12

Author(s):

A.J. Groszek ◽

S. Partyka ◽

D. Cot

Keyword(s):

Carbon Black ◽

Aqueous Solutions ◽

Active Carbon ◽

Graphitized Carbon Black ◽

Gold Chloride ◽

Heats Of Adsorption ◽

Graphitized Carbon ◽

Cyanide Complexes

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Preconcentration of organophosphorus pesticides from aqueous solutions with graphitized carbon black column.

BUNSEKI KAGAKU ◽

10.2116/bunsekikagaku.32.8_e251 ◽

1983 ◽

Vol 32 (8) ◽

pp. E251-E258 ◽

Cited By ~ 2

Author(s):

Hideko KOSHIMA ◽

Hiroshi ONISHI

Keyword(s):

Carbon Black ◽

Aqueous Solutions ◽

Organophosphorus Pesticides ◽

Graphitized Carbon Black ◽

Graphitized Carbon ◽

Black Column

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A Preparation of High Resolution Standards for Electron Microscopy. Part II

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100064852 ◽

1971 ◽

Vol 29 ◽

pp. 160-161

Author(s):

Akira Tanaka ◽

David F. Harling

Keyword(s):

Electron Microscopy ◽

High Resolution ◽

Carbon Black ◽

Single Crystal ◽

Dark Field ◽

Graphitized Carbon Black ◽

Graphitized Carbon ◽

Dark Field Imaging ◽

Crystal Films ◽

Micro Holes

In the previous paper, the author reported on a technique for preparing vapor-deposited single crystal films as high resolution standards for electron microscopy. The present paper is intended to describe the preparation of several high resolution standards for dark field microscopy and also to mention some results obtained from these studies. Three preparations were used initially: 1.) Graphitized carbon black, 2.) Epitaxially grown particles of different metals prepared by vapor deposition, and 3.) Particles grown epitaxially on the edge of micro-holes formed in a gold single crystal film.The authors successfully obtained dark field micrographs demonstrating the 3.4Å lattice spacing of graphitized carbon black and the Au single crystal (111) lattice of 2.35Å. The latter spacing is especially suitable for dark field imaging because of its preparation, as in 3.), above. After the deposited film of Au (001) orientation is prepared at 400°C the substrate temperature is raised, resulting in the formation of many square micro-holes caused by partial evaporation of the Au film.

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