A complete in-situ analysis of UV–vis and 2D-FTIR spectra of the molecular interaction between RO16 (azo dye) and synthesized ammonium-based ionic liquids

Castillo-Cervantes, Jazmin N.; Gómora-Herrera, Diana; Navarrete‐Bolaños, Juan; Likhanova, Natalya V.; Olivares‐Xometl, Octavio; Lijanova, Irina V.

doi:10.1016/j.seppur.2020.117652

Cited by 14 publications

(3 citation statements)

References 36 publications

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“… 40 On the other hand, the appearance of peak at 1614 cm −1 represents carbonyl band and the appearance of a secondary amine peak at 625 cm −1 . 50 Examining the FTIR for the bioflocculation treated nanodye, the spectrum resembles that for the electron beam exposed samples, but without the appearance of the peaks that indicate hydroxylation. This suggests that the mechanism of degradation of the nanodye for electron beam exposed samples depends primarily on hydroxylation and azo dye bond breakage while that for bioflocculation removal depends on adsorption mainly and degradation as a secondary step.…”

Section: Resultsmentioning

confidence: 99%

Sequential electron beam and bioflocculation for treatment of textile nanodyes

Elkenawy

Gomaa

2023

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Sequential electron beam and bioflocculation for treatment of textile nanodyes

Elkenawy

Gomaa

2023

RSC Adv.

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“…[N 8881 ][tar] showed the best performances. 53 The same group showed that the extraction of betanin from beet root extract or fresh beet juice is effective using ionic liquids prepared using the DMC route. 54 [N 4441 ][Hex], and [N 6661 ] and [N 8881 ] based ionic liquids with adipate [adi], fumarate [fum] salicylate [sal] tartrate [tar] mono-anions were used with the [N 4441 ][Hex]/[N 8881 ][adi] mixture showing the best extraction yield, with 82 % of betanin extracted from fresh beet juice.…”

Section: Potential Uses Of the Dialkyl Carbonate Routementioning

confidence: 99%

“…51 showed the best performances. 53 The same group showed that the extraction of betanin from beet root extract or fresh beet juice is effective using ionic liquids prepared using the DMC route. 54 % of betanin extracted from fresh beet juice.…”

Section: Ionic Liquids For Selective Extractionmentioning

confidence: 99%

The dialkylcarbonate route to ionic liquids: purer, safer, greener?

et al. 2023

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Multilayer adsorption of reactive orange 16 dye onto Fe₂O₃/ZnO hybrid nanoadsorbent: mechanistic insights from kinetics, isotherms and dynamic light scattering studies

Hussain,

Asif,

Shafaat

et al. 2024

J of Chemical Tech & Biotech

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BACKGROUNDFe2O3/ZnO hybrid nanoadsorbent was synthesized by the coprecipitation method and characterized. The hydrodynamic size and stability of the nanoadsorbent were investigated in batch adsorption of toxic Reactive orange (RO)16 dye at increasing concentrations. The mechanism of monolayer and multilayer dye adsorption was elucidated for the first time together through dynamic light scattering (DLS), isotherm, kinetic and thermodynamic studies. A tomato seed germination assay was performed to confirm the material and treated water toxicity.RESULTSThe ferromagnetic nanoadsorbent exhibited 85% RO16 dye removal. Nonlinear fitting of isotherm and kinetic models suggest the chemisorption (monolayer) and physisorption (multilayer) of dye over the heterogeneous surface of the nanoadsorbent, respectively, at lower and higher concentration of dye. In line with these mechanistic insights, DLS studies demonstrate that monolayer adsorption increased hydrodynamic size up to 100 mg L−1 by face‐off binding of dye molecules, whereas multilayer adsorption was in the 100–500 mg L−1 concentration range; besides increase in adsorption capacity, did not magnify hydrodynamic size owing to face‐on binding with multiple dye molecule stacking. Zeta potential data confirmed greater stability of the nanoadsorbent at solution pH with large hydrodynamic size. Thermodynamic studies suggested that endothermic and spontaneous adsorption process primarily controlled physical adsorption at higher dye concentrations. A toxicity assay proved that the nanoadsorbent and treated water are environmentally safe.CONCLUSIONDLS, isotherm and kinetic studies elucidated the complex adsorption mechanism over a heterogenous surface of a hybrid nanoadsorbent. It was found that monolayer chemisorptive face‐off binding of RO16 molecules increased hydrodynamic size whereas multilayer physisorptive face‐on binding did not affect hydrodynamic size; rather, it remained stable with increasing RO16 concentration. © 2024 Society of Chemical Industry (SCI).

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A complete in-situ analysis of UV–vis and 2D-FTIR spectra of the molecular interaction between RO16 (azo dye) and synthesized ammonium-based ionic liquids

Cited by 14 publications

References 36 publications

Sequential electron beam and bioflocculation for treatment of textile nanodyes

Sequential electron beam and bioflocculation for treatment of textile nanodyes

The dialkylcarbonate route to ionic liquids: purer, safer, greener?

Multilayer adsorption of reactive orange 16 dye onto Fe₂O₃/ZnO hybrid nanoadsorbent: mechanistic insights from kinetics, isotherms and dynamic light scattering studies

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A complete in-situ analysis of UV–vis and 2D-FTIR spectra of the molecular interaction between RO16 (azo dye) and synthesized ammonium-based ionic liquids

Cited by 14 publications

References 36 publications

Sequential electron beam and bioflocculation for treatment of textile nanodyes

Sequential electron beam and bioflocculation for treatment of textile nanodyes

The dialkylcarbonate route to ionic liquids: purer, safer, greener?

Multilayer adsorption of reactive orange 16 dye onto Fe2O3/ZnO hybrid nanoadsorbent: mechanistic insights from kinetics, isotherms and dynamic light scattering studies

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Product

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Multilayer adsorption of reactive orange 16 dye onto Fe₂O₃/ZnO hybrid nanoadsorbent: mechanistic insights from kinetics, isotherms and dynamic light scattering studies