Adsorption kinetics, isotherm and thermodynamics studies of flavones from Vaccinium Bracteatum Thunb leaves on NKA-2 resin

Chen, Yiyong; Zhang, Dejin

doi:10.1016/j.cej.2014.05.120

Cited by 113 publications

(39 citation statements)

References 33 publications

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“…Considering this, the kinetics of morin adsorption onto the nanoparticle surface was analyzed using three different kinetic models: the pseudo-first-order proposed first by Lagergren (Eq 8) [75], the pseudo-second-order models of Ho and McKay [76] (Eq 9) and Weber and Morris intra-particle diffusion model (Eq 10) [77]: …”

Section: Resultsmentioning

confidence: 99%

Morin Flavonoid Adsorbed on Mesoporous Silica, a Novel Antioxidant Nanomaterial

et al. 2016

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Morin (2´,3, 4´,5,7-pentahydroxyflavone) is a flavonoid with several beneficial health effects. However, its poor water solubility and it sensitivity to several environmental factors avoid its use in applications like pharmaceutical and cosmetic. In this work, we synthetized morin-modified mesoporous silica nanoparticles (AMSNPs-MOR) as useful material to be used as potential nanoantioxidant. To achieve this, we characterized its adsorption kinetics, isotherm and the antioxidant capacity as hydroxyl radical (HO•) scavenger and singlet oxygen (1O2) quencher. The experimental data could be well fitted with Langmuir, Freundlich and Temkin isotherm models, besides the pseudo-second order kinetics model. The total quenching rate constant obtained for singlet oxygen deactivation by AMSNPs-MOR was one order of magnitude lower than the morin rate constant reported previously in neat solvents and lipid membranes. The AMSNPs-MOR have good antioxidant properties by itself and exhibit a synergic effect with morin on the antioxidant property against hydroxyl radical. This effect, in the range of concentrations studied, was increased when the amount of morin adsorbed increased.

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Section: Resultsmentioning

confidence: 99%

Morin Flavonoid Adsorbed on Mesoporous Silica, a Novel Antioxidant Nanomaterial

et al. 2016

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“…The complete information regarding internal energy and the mechanism involved in any adsorption process can be precisely evaluated by its thermodynamics [48]. Thermodynamic parameters, namely standard free energy change DG°, standard enthalpy change DH°, and standard entropy change DS°were assessed by studying the effect of temperature on adsorption process.…”

Section: Thermodynamic Parametersmentioning

confidence: 99%

Rapid and efficient removal of fluoride ions from aqueous solution using a polypyrrole coated hydrous tin oxide nanocomposite

Parashar

Ballav

Debnath

et al. 2016

Journal of Colloid and Interface Science

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“…Figures 14.7a and b show the experimental absorption kinetics data and the two fitted model curves for the absorption of the two oils on the 0.50 wt.% cellulose aerogels, which show a good agreement. 60,61 The values of k 1 and k 2 are generally much larger than those reported. This phenomenon indicates that the absorption speed of the cellulose aerogels described in this section, with 5w50 motor oil and Singer oil, were much higher than those of the cellulose aerogels described with crude oils.…”

Section: Absorption Capacities With Different Oilsmentioning

confidence: 61%