Facile synthesis of zeolitic‐imidazole framework‐67 (ZIF‐67) for the adsorption of indigo carmine dye

The Canadian Journal of Chemical Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Abstract This study aims to synthesize ZIF‐67 for the adsorption of indigo carmine (I.C.) dye. materials were synthesized under different conditions and synthesis condition giving best efficiency was obtained. In batch studies, pH, adsorbent amount, contact time, initial dye concentration, temperature effects investigated. Adsorption data applied Langmuir, Freundlich, Temkin isotherm models. The correlation value obtained in Langmuir ( R 2 = 0.999). I.C. with occurred a monolayer homogeneous surface according isotherm. highest capacity metal–organic framework found as 370 mg/g. Kinetic model studies also performed pseudo first‐order, second‐order, intraparticle diffusion models used. Pseudo second‐order fitting kinetic 0.997). mechanisms include electrostatic interaction, π–π hydrogen bonding. Thermodynamic showed that removal by is an exothermic spontaneous process. characterized X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FT‐IR), field emission scanning electron microscope (FE‐SEM), N adsorption–desorption. area 1493 m g −1 . salt concentration effect on investigated, showing increase capacities increasing concentration. regeneration carried out after 5 cycles, reduction 21%.

Language: Английский

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Enriched removal of cationic and anionic dyes using 4-nitro cinnamaldehyde loaded hydroxyapatite with hematite nanocomposites

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 48, P. 104206 - 104206

Published: March 16, 2024

Language: Английский

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Constructing a synergistic catalyst by confining Pd within a MOF using an extended “bottle-around-ship” protocol

Microporous and Mesoporous Materials, Journal Year: 2023, Volume and Issue: 363, P. 112828 - 112828

Published: Sept. 21, 2023

Language: Английский

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Efficient adsorptive removal of two anionic dyes (methyl orange and methyl red) with MOF‐525: Adsorption isotherms and kinetics studies

Environmental Progress & Sustainable Energy, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 13, 2024

Abstract Adsorption is widely used to remove anionic and cationic dyes from wastewater because of its economical high efficiency. Metal‐organic frameworks (MOFs), as a kind adsorbent, have attracted great attention due the large surface area, adjustable pore size, stability. In this study, Zr‐MOF, named MOF‐525, was synthesized by using solvothermal method, adsorption performances MOF‐525 on two (methyl orange, MO methyl red, MR) were investigated. Results showed that obtained with specific area 2,613.91 m 2 g −1 , total volume 1.20 cm 3 average size 1.84 nm, exhibited capacities for both MR. The optimal pH value MR 3.0 4.0, capacity 854.30 629.67 mg respectively; in addition, increased increasing SO 4 2− concentration. kinetics, isotherms, thermodynamics results indicated pseudo‐second‐order model Langmuir (as well Freundlich) could describe processes well, spontaneous exothermic reactions. Besides, reusability experiment demonstrated had significant good conclusion, possible mechanisms involved hydrogen bonding, electrostatic attraction, π‐π interaction. These illustrated might be potential material removal wastewater.

Language: Английский

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Wide-Spectrum Dye Adsorption Performance of Alginic Acid Carbon Aerogel

Water Air & Soil Pollution, Journal Year: 2024, Volume and Issue: 235(6)

Published: May 28, 2024

Language: Английский

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