scholarly journals Adsorption of Sodium Hexadecyl Sulfate and Triton X from Binary Aqueous Solutions at Thermally Graphitized Carbon Black

2020 ◽  
Vol 65 (1) ◽  
pp. 72-79
Author(s):  
Olga Kochkodan ◽  
Victor Maksin ◽  
Tetyana Semenenko
Keyword(s):  
Carbon Black ◽  
Aqueous Solutions ◽  
Nonionic Surfactant ◽  
Adsorption Layer ◽  
Nonionic Surfactants ◽  
Graphitized Carbon Black ◽  
Bulk Solution ◽  
Graphitized Carbon ◽  
Individual Solution ◽  
Triton X

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.

scholarly journals Mixed adsorption of hexadecylpyridinium bromide and Triton X surfactants at graphitized carbon black

2020 ◽  
Vol 85 (6) ◽  
pp. 781-794
Author(s):  
Olga Kochkodan ◽  
Viktor Maksin
Keyword(s):  
Carbon Black ◽  
Adsorption Layer ◽  
Surfactant Molecule ◽  
Graphitized Carbon Black ◽  
Bulk Solution ◽  
Ionic Surfactant ◽  
Surfactant Mixtures ◽  
Graphitized Carbon ◽  
Experimental Values ◽  
Triton X

Adsorption of cationic 1-hexadecylpyridinium bromide (HDPB) and non-ionic p-(1,1,3,3-tetramethylbutyl)-phenoxypolyoxyethylene glycols surfactants of the Triton X series (Triton X-45, Triton X-100 and Triton X-305) from their single and mixed aqueous solutions at thermally graphitized carbon black (CB) was studied. It was shown that the adsorption of the non-ionic surfactant from its individual solution decreased when a number of ethylene oxide units in the surfactant molecule increased. Addition of the non-ionic surfactants increased the amount of HDPB adsorbed from HDPB/Triton X mixtures. At low solution concentrations it was found that in HDPB/Triton X mixtures, the experimental values of total surfactants adsorption are higher than the adsorption values calculated for the ideal surfactant mixtures. The composition of the mixed HDPB/Triton X adsorption layer and the parameters of the intermolecular interaction (?s), between the components in this layer, were calculated using the Rubingh-Rosen approach. It was shown that ?s parameters have negative values, which indicate notable interactions between Triton X molecules and HDPB ions in the mixed adsorption layer. It was found that the composition of the mixed adsorption layer at CB surface is notably different from the surfactants composition in the bulk solution. The mixed HDPB/Triton X adsorption layer is enriched with Triton X surfactant and the mole fraction of Triton X increases with decreasing of ethoxylation degree of its molecules.

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

Langmuir ◽  
1996 ◽  
Vol 12 (2) ◽  
pp. 423-430 ◽  
Author(s):  
Zoltán Király ◽  
Imre Dékány ◽  
Erwin Klumpp ◽  
Hans Lewandowski ◽  
Hans D. Narres ◽  
...  
Keyword(s):  
Carbon Black ◽  
Aqueous Solutions ◽  
Graphitized Carbon Black ◽  
Selective Sorption ◽  
Graphitized Carbon ◽  
Related Compounds

scholarly journals Evidence by Gel Filtration for Solubilization of NAA by Nonionic Surfactant Micelles

HortScience ◽  
1990 ◽  
Vol 25 (10) ◽  
pp. 1302-1303 ◽  
Author(s):  
Antonio Heredia ◽  
Martin J. Bukovac
Keyword(s):  
Acetic Acid ◽  
Aqueous Solutions ◽  
Nonionic Surfactant ◽  
Nonionic Surfactants ◽  
Gel Filtration ◽  
Deposit Formation ◽  
Gel Filtration Chromatography ◽  
Surfactant Micelles ◽  
Spray Solution ◽  
Triton X

Micelles of two nonionic surfactants (Triton X-114 and Neodol 91) were shown by gel filtration chromatography to solubilize nondissociated NAA molecules in aqueous solutions. Micelle solubilization of nonpolar active ingredients in aqueous spray systems alters the distribution of the chemical in the spray solution and may influence chemical deposit formation and penetration characteristics. Chemical names used: 2-(1-naphthyl)acetic acid (NAA), octylphenoxy polyethoxylate-7.5 POE (Triton X-114), linear alcohol (C9-11) polyethoxylate-6 POE (Neodol 91).

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

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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