Cover Image

Adsorption of TX-100 and SDBS on the surface of alumina and maghemite nanoparticles from aqueous solutions

R. R. Mansurov, A. P. Safronov, N. V. Lakiza, D. V. Leiman

Abstract


Adsorption equilibriums in aqueous aluminum and iron oxides nanosuspensions stabilized by SDBS and TX-100 were investigated using UV spectrophotometry. It was established that the non-ionic surfactant TritonX-100 is not adsorbed from aqueous solution on a hydrophilic surface of both aluminum and iron oxide nanoparticles. At the same time adsorption of the anionic surfactant SDBS was observed in both oxides nanoparticles. In the investigated range of concentrations adsorption isotherms SDBS from aqueous solution on the surfaces of nanoparticles Al2O3 and γ-Fe2O3 not reach saturation. The share of the particles surface occupied by surfactant molecules were estimated based on the value of an area of molecules SDBS in the adsorption layer, which was derived from the isotherm of surface tension (0.10 nm2). The calculations showed that at the investigated concentrations SDBS Al2O3 employed approximately 30 % of surface of nanoparticles, and for γ-Fe2O3 – up to 10%.

Keywords


nanosuspension; aggregation; surfactants; iron oxide; aluminum oxide

References


Gao J, Gu H, Xu B. Multifunctional Magnetic Nanoparticles: Design, Synthesis, and Biomedical Applications. Acc Chem Res. 2009;42(8):1097-107. doi:10.1021/ar9000026

Zhu D, Li X, Wang N, Wang X, Gao J, Li H. Dispersion behavior and thermal conductivity characteristics of Al2O3-H2O nanofluids. Curr Appl Phys. 2009;9(1):131-9. doi:10.1016/j.cap.2007.12.008

Li X, Zhu D, Wang X. Evaluation on dispersion behavior of the aqueous copper nano-suspensions. J Colloid Interf Sci. 2007;310(2):456-63. doi:10.1016/j.jcis.2007.02.067

Mansurov RR, Leiman DV. In: Tezisy dokladov molodezhnoy nauchnoy konferentsii "Problemy teoreticheskoy i eksperimental'noy khimii" [Abstracts of XXII Russian conference for young scientists "Problems of theoretical and applied chemistry"]. 2012 May 24-28; Ekaterinburg, Russia. p. 45. Russian.




DOI: http://dx.doi.org/10.15826/chimtech.2014.1.2.696

Copyright (c) 2014 R. R. Mansurov, A. P. Safronov, N. V. Lakiza, D. V. Leiman

© Chimica Techno Acta, 2014-2019
ISSN 2411-1414 (Online), ISSN 2409-5613 (Print)

ROAD logo WorldCat logo DOAJ logo CAS logo BASE logo eLibrary logo