Repository of Research and Investigative Information

Repository of Research and Investigative Information

Kurdistan University of Medical Sciences

Dendrimer-titania nanocomposite: Synthesis and dye-removal capacity

(2015) Dendrimer-titania nanocomposite: Synthesis and dye-removal capacity. Research on Chemical Intermediates.

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

Dendrimer-titania nanocomposite (DTN) was synthesized, and the product was characterized by use of Fourier-transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. The dye-removal capacity of DTN was investigated for direct blue 78 (DB78) and direct red 80 (DR80). The effects of pH and amount of adsorbent on dye removal were determined, and the isotherm, kinetics, and thermodynamics were studied. The point of zero charge (pH<inf>pzc</inf>) of the nanocomposite was 6.4. The Longmuir isotherm model was the best fit to the experimental data. The maximum adsorption capacity of DTN was 1,250 mg/g for DB78 and 990 mg/g for DR80. The kinetic data were a good fit to the pseudo-second order model. Thermodynamic data indicated that adsorption of the dyes by DTN was endothermic and spontaneous, and occurred by physisorption. © 2013 Springer Science+Business Media Dordrecht.

Item Type: Article
Keywords: Dendrimers; Fourier transform infrared spectroscopy; Isotherms; Kinetics; Phase equilibria; Physisorption; Scanning electron microscopy; Synthesis (chemical); Thermodynamics; Titanium dioxide; X ray diffraction, Adsorption capacities; Dye removal; Isotherm , kinetics; Isotherm modeling; Point of zero charge; Pseudo-second order model; Thermodynamic data; Titania, Nanocomposites
Page Range: pp. 3743-3757
Journal or Publication Title: Research on Chemical Intermediates
Volume: 41
Number: 6
Publisher: Kluwer Academic Publishers
Identification Number: 10.1007/s11164-013-1486-4
ISSN: 09226168
Depositing User: مهندس جمال محمودپور
URI: http://eprints.muk.ac.ir/id/eprint/761

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