Effect of nonionic surfactant on micellization thermodynamics and spectroscopic profile of dye-surfactant aggregation

Taj, Muhammad Babar; Noor, Sadia; Javed, Tariq; Ihsan, Anaum; Sarwari, Ghulam; Jabeen, Sobia; Sharif, Tehmina; Naseem, Zubera; Naz, Iram; Iqbal, Humaira; Ghani, Naila

doi:10.1080/01932691.2021.1960169

Cited by 3 publications

(1 citation statement)

References 45 publications

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“…Based on the results in Figure 2, the RBB KN-R molecules gradually interacted with the surfactant molecules to form ion pairs at a molar ratio of 1:1 with the successive addition of surfactant up to 0.22 mmol/L. The dye-surfactant complexes had high hydrophobic properties (Figure 3), so their aggregates were readily formed via hydrophobic forces [36,37], corresponding to the appearance of peaks at approximately 630 nm. As a result, the UV-Vis absorption intensity of each dye-surfactant solution gradually decreased as the surfactant concentration increased to 0.22 mmol/L.…”

Section: Effect Of Alkyl Chain Length On Uv-vis Spectra Of the Dye-su...mentioning

confidence: 99%

Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Liu,

Chang,

et al. 2024

Molecules

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To develop a cost-effective method for the effective removal of reactive brilliant blue KN-R (RBB KN-R) from wastewater, we investigated the interactions between RBB KN-R and three cationic surfactants with different alkyl chain lengths, namely dodecyltrimethylammonium bromide (DTAB), tetradecyltrimethylammonium bromide (TTAB), and cetyltrimethylammonium bromide (CTAB). Employing a conductivity analysis, surface tension analysis, ultraviolet-visible spectrophotometry, and molecular dynamics simulation, we ascertained that RBB KN-R formed a 1:1 molar ratio dye–surfactant complex with each surfactant through electrostatic attraction. Notably, an augmentation in alkyl chain length correlated with increased binding strength between RBB KN-R and the surfactant. The resulting dye–surfactant complex exhibited heightened surface activity, enabling interactions through hydrophobic forces to generate dye–surfactant aggregates when the molar ratio was below 1:1. Within these mixed aggregates, self-assembly of RBB KN-R molecules occurred, leading to the formation of dye aggregates. Due to the improved hydrophobicity with increased alkyl chain length, TTAB and CTAB could encapsulate dye aggregates within the mixed aggregates, but DTAB could not. The RBB KN-R aggregates tended to distribute on the surface of the RBB KN-R-DTAB mixed aggregates, resulting in low stability. Thus, at a DTAB concentration lower than CMC, insoluble particles readily formed and separated from surfactant aggregates at an RBB KN-R and DTAB molar ratio of 1:4. Analyzing the RBB KN-R precipitate through scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) and measuring the DTAB concentration in the supernate revealed that, at this molar ratio, all RBB KN-R precipitated from the dye–surfactant mixed solution, with only 7.5 ± 0.5% of DTAB present in the precipitate. Furthermore, the removal ratio of RBB KN-R reached nearly 100% within a pH range of 1.0 to 9.0 and standing time of 6 h. The salt type and concentration did not significantly affect the precipitation process. Therefore, this simultaneous achievement of successful RBB KN-R removal and effective separation from DTAB underscores the efficacy of the proposed approach.

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Section: Effect Of Alkyl Chain Length On Uv-vis Spectra Of the Dye-su...mentioning

confidence: 99%

Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Liu,

Chang,

et al. 2024

Molecules

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show abstract

Enhanced solubilization and encapsulation of direct dyes through self-assembled single and mixed micellar nanocarriers

Irshad

Sultana

Usman

et al. 2023

Environmental Technology & Innovation

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Synergistic removal of toxic anionic reactive red dye Me4BL (RRME4BL) from aqueous media using chemically synthesised nano-adsorbents (ZnO, CuO, NiO and CoO); equilibrium, kinetics and thermodynamic studies

Zaheer,

Munir,

Younas

et al. 2024

Chemistry and Ecology

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Effect of nonionic surfactant on micellization thermodynamics and spectroscopic profile of dye-surfactant aggregation

Cited by 3 publications

References 45 publications

Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Enhanced solubilization and encapsulation of direct dyes through self-assembled single and mixed micellar nanocarriers

Synergistic removal of toxic anionic reactive red dye Me4BL (RRME4BL) from aqueous media using chemically synthesised nano-adsorbents (ZnO, CuO, NiO and CoO); equilibrium, kinetics and thermodynamic studies

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