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