Interaction between cationic dyes and colloidal particles in a C60 hydrosol

Mchedlov‐Petrossyan, Nikolay O.; Klochkov, Vladimir K.; Andrievsky, Grigoriy V.; Karyakina, É. L.; Ishchenko, A. A.

doi:10.1070/mc1999v009n02abeh001043

Cited by 13 publications

(25 citation statements)

References 9 publications

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“…A different type of interaction should account for the adsorption process as an important amount of dye is adsorbed at low pH values, for which the alga is completely protonated; moreover, the increase in the adsorption capacity occurs two pH units below the algal p K a , which is 3.85 for a degree of dissociation of 0.5 14. These facts suggest the existence of hydrophobic interactions which have been reported by different authors to contribute to the description of the interaction of Methylene Blue with different kind of surfaces 17–20…”

Section: Resultsmentioning

confidence: 91%

Removal of Methylene Blue from aqueous solutions using as biosorbent Sargassum muticum: an invasive macroalga in Europe

Rubín

Rodríguez

Herrero

et al. 2004

J of Chemical Tech & Biotech

121

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Methylene Blue adsorption on Sargassum muticum, an invasive macroalga in Europe, has been investigated using visible absorption spectroscopy. Different pre-treatments, protonation and chemical cross-linking with CaCl 2 or H 2 CO, have been tested in order to improve the stability as well as the adsorption capacity of the algal biomass. The equilibrium binding has been described in terms of Langmuir or Freundlich isotherms depending on the algal pre-treatment; from the maximum adsorption capacity values, an estimation of the algal specific surface area was made. Moreover, it has been found that adsorption kinetics can be described according to the first order Lagergren model, from which the rate constant and the adsorption capacity were determined. Finally, simple empirical equations were obtained to evaluate the amount of Methylene Blue removed at any initial concentration and reaction time. The results obtained have shown that this type of material has a high adsorption capacity for Methylene Blue dye, this feature together with the short times needed to reach the equilibrium suggest that Sargassum muticum can be used as a low-cost biosorbent in wastewater treatments.

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Section: Resultsmentioning

confidence: 91%

Removal of Methylene Blue from aqueous solutions using as biosorbent Sargassum muticum: an invasive macroalga in Europe

Rubín

Rodríguez

Herrero

et al. 2004

J of Chemical Tech & Biotech

121

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“…adsorption of a dye on the surface of NPs [22,23]. This adsorption can be accompanied by spectral changes connected with aggregation of NPs that can affect the reliability of the effects observed.…”

Section: Methodsmentioning

confidence: 95%

Comparative analysis of photocatalytic activity of aqueous colloidal solutions of ReVO4:Eu3+(Re=La, Gd, Y), CePO4:Tb, CeO2 and C60

Klochkov

2015

Journal of Photochemistry and Photobiology A: Chemistry

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“…Other organic compounds can also carry out functions of Alq and TPD. For example, the combination of strong acceptors of fullerenes and unique converters of light energy of polymethine dyes should have major prospectives [48]. It should be noted that the molecules of the donor and acceptor can efficiently activate luminescence, not only when they lie in the same polymer layer, but also when the donor and acceptor are in different layers, namely acceptor in electron transport and emision layer and donor in hole transport layer [49].…”

Section: Dye H 3 Dye ãmentioning

confidence: 99%

Molecular engineering of dye‐doped polymers for optoelectronics

Ishchenko

2002

Polymers for Advanced Techs

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The main approaches to molecular engineering of prospective dye‐doped polymer matrices for optoelectronics have been considered. The advantages of such matrices over polymers and dyes separately were analyzed. It was shown that these advantages can be realized in the case where a doping of polymers by low‐molecular‐weight dyed impurities does not essentially distort spectral, luminescent and nonlinear optical properties of the individual components of polymer composition. The influence of polymer nature and chemical constitution of organic dyes on photophysical and photochemical properties of these matrices was analyzed. Processes of dye aggregation in polymers were characterized. Their influence on photophysical properties and the photochemical stability of dye‐doped materials was discussed. The different approaches for struggle with it is offered. The influence of the method of introduction of a dye into a polymer on the output parameters of dyed materials was considered. The main paths of energy degradation of electronic excitation in such materials – internal conversion, electron transfer and photoisomerization – were analyzed. The role of dyes in the process of generation, in recombination and in the carriage of charges in photoconductive polymers was discussed. The prospects for the application of dye‐doped polymer materials as passive Q‐switches of solid‐state lasers, as active laser media with large Stokes shift, as luminescent solar converters and as electroluminescent emitters were demonstrated. Copyright © 2003 John Wiley & Sons, Ltd.

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Interaction between cationic dyes and colloidal particles in a C60 hydrosol

Cited by 13 publications

References 9 publications

Removal of Methylene Blue from aqueous solutions using as biosorbent Sargassum muticum: an invasive macroalga in Europe

Removal of Methylene Blue from aqueous solutions using as biosorbent Sargassum muticum: an invasive macroalga in Europe

Comparative analysis of photocatalytic activity of aqueous colloidal solutions of ReVO4:Eu3+(Re=La, Gd, Y), CePO4:Tb, CeO2 and C60

Molecular engineering of dye‐doped polymers for optoelectronics

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