Dendrimer–titania nanocomposite: synthesis and dye-removal capacity

Dendrimer–titania nanocomposite: synthesis and dye-removal capacity 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 (pHpzc) 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Dendrimer–titania nanocomposite: synthesis and dye-removal capacity

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Publisher
Springer Netherlands
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-013-1486-4
Publisher site
See Article on Publisher Site

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 (pHpzc) 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.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Nov 22, 2013

References

  • Synthesis of amine functionalized magnetic ferrite nanoparticle and its dye removal ability
    Mahmoodi, N.M.
  • Nanostructured Cu/TiO2 photocatalysts for H2 production from ethanol and glycerol aqueous solutions
    Montini, T; Gombac, V; Sordelli, L; Delgado, JJ; Chen, X; Adami, G; Fornasiero, P
  • Binary polyethylene oxide/titania solid-state redox electrolyte for highly efficient nanocrystalline TiO2 photoelectrochemical cells
    Stergiopoulos, T; Arabatzis, IM; Katsaros, G; Falaras, P
  • Poly (amidoamine) dendrimer-templated nanocomposites. 1. Synthesis of zerovalent copper nanoclusters
    Balogh, L; Tomalia, DA

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