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- W2090884496 abstract "NiFe2O4/Carbon nanotube composite materials have been prepared using in-situ chemical precipitation of metal hydroxides in the presence of multi-walled carbon nanotubes (MWCNTs) and followed by hydrothermal processing. The obtained composite powders were characterized using XRD and TEM. The adsorption efficiency of NiFe2O4/carbon nanotubes for toluidine blue at various temperatures was examined. The amount adsorbed increased with the NiFe2O4/CNTs dosage. The linear correlation coefficients and standard deviations of Langmuir and Freundlich isotherms were determined. The results revealed that Langmuir isotherm fitted the experimental results well. Kinetic analyses were conducted using pseudo first-order, second-order and the intraparticle diffusion models. The regression results showed that the adsorption kinetics were more accurately represented by a pseudo second-order model. Changes in the free energy of adsorption (ΔG 0), enthalpy (ΔH 0) and entropy (ΔS 0), as well as the activation energy (E a) were determined. ΔH 0 and ΔS 0 were 15.99 kJ/mol and 98 J/mol K, respectively. The activation energy was 8.2 kJ/mol. ΔH 0, ΔG 0 and E a values reflected that the adsorption of toluidine blue onto NiFe2O4/CNTs was by physisorption." @default.
- W2090884496 created "2016-06-24" @default.
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- W2090884496 date "2014-01-16" @default.
- W2090884496 modified "2023-09-27" @default.
- W2090884496 title "Efficiency, Kinetics and Thermodynamics of Toluidine Blue Dye Removal from Aqueous Solution Using MWCNTs Decorated with NiFe<sub>2</sub>O<sub>4</sub>" @default.
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- W2090884496 doi "https://doi.org/10.1080/1536383x.2012.684188" @default.
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