Superior adsorption and removal of industrial dye from aqueous solution via magnetic silver metal-organic framework nanocomposite

• Published in: Environmental technology Vol. 45; no. 13; pp. 2558 - 2574
• Main Authors: Mogharbel, Roaa T., Alkhamis, Kholood, Felaly, Rasha, El-Desouky, M.G., El-Bindary, A.A., El-Metwaly, Nashwa M., El-Bindary, M.A.
• Format: Journal Article
• Language: English
• Published: England Taylor & Francis 06-06-2024; Taylor & Francis Ltd
• Subjects: @Ag-MOF; Adsorbents; Adsorption; Aqueous solutions; Cationic dyes; Contaminants; Dyeing; Dyes; Electrostatic properties; Endothermic reactions; gentine violet; Hydrogen bonding; Hydrogen bonds; Iron oxides; Magnetic properties; Metal-organic frameworks; Nanocomposites; removal; reusability; Silver; Surface chemistry; Synthesis; Temperature profiles; waste water; Water pollution; X ray photoelectron spectroscopy; removal; Fe3O4@Ag-MOF; reusability; gentine violet; waste water
• ISSN: 0959-3330; 1479-487X
• DOI: 10.1080/09593330.2023.2178331

The indirect emission had a negative influence on the ecosystem of enormous amounts of harmful dyes into water. Fe
3
O
4
@Ag-MOF was successfully fabricated to capture Gentine violet (GV)) as a model example of cationic dye from their aqueous solutions was evaluated in this search as a method to eliminate dyes from water contaminants. FTIR, XPS, BET, TGA, SEM, TEM, and XRD have all been used to study this adsorbent in order to determine its structural and chemical characteristics as well as to interpret its binding mechanisms. According to the results of the characterization, the synthesized composite had a size about 45 nm, a surface area of 856.06 m
2
/g, and considerable magnetic characteristics (66.2 emug
−1
). Consequently, we created mesoporous surfaces that had a strong ability to interface and absorb GV dye. It is possible to use the pseudo-second order rate equation to characterize the kinetic profile., while the Langmuir equation fits isotherm models. At pH 9, maximum sorption capacities can reach 1.68 mmol.g
−1
. Additionally, the investigations of temperature profiles indicated the endothermic process and Thermodynamic parameters were discovered as, ΔG°, ΔH° and ΔS° The synthesized adsorbent had an interestingly high reusability of > 92 percent up to the sixth cycle. These findings revealed that a mixture of electrostatic interactions, π-π stacking, hydrogen bonds, and pore filling were involved in the GV adsorption mechanism. Fe
3
O
4
@Ag-MOF was successful in demonstrating its effectiveness as a point-of-use colour collection candidate from actual dyeing effluents.