Eco‐Friendly Synthesis of ZnO Nanoparticles Using Zeolitic Imidazolate Framework‐7 for Methylene Blue Removal: Experimental and Theoretical Analysis DOI
Nadhem Missaoui, Abeer M. Beagan,

Jassem Wannassi

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(16)

Published: April 1, 2025

Abstract Industrial dye contamination in water sources presents serious threats to both human health and the environment. Adsorption technology has gained popularity for wastewater treatment due its simplicity, cost‐effectiveness, use of environmentally friendly materials. This study investigates desorption methylene blue (MB) using zinc oxide nanoparticles (ZnO‐NPs) synthesized from ZIF‐7 (Zn(BIM)₂; BIM = Benzimidazole) with a sodalite zeolitic topology. The green synthesis ZnO‐NPs was characterized X‐ray powder diffraction Rietveld refinement (space group P63/mmc, b 3.252 (2) Å; c 5.207 (4) Å, α β 90°, γ 120°), Fourier transform infrared spectroscopy (FTIR), (XRD), transmission electron microscopy (TEM), energy dispersive (EDS), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller (BET) techniques, revealing surface area (29.93 g/m 2 ), nanoscale size (3 nm), hydroxyls. Under optimal conditions (pH 7, 10 mg/L concentration, 0.02 g adsorbent dose), achieved an adsorption efficiency 94.7% MB. capacity increased 62.7 mg/g at 298 K 85.16 328 K, isotherm showing physical as primary mechanism (adsorption energies <40 kJ/mol). Modeling revealed MB molecules adsorbed nonparallel ZnO‐NP surface.

Language: Английский

Eco‐Friendly Synthesis of ZnO Nanoparticles Using Zeolitic Imidazolate Framework‐7 for Methylene Blue Removal: Experimental and Theoretical Analysis DOI
Nadhem Missaoui, Abeer M. Beagan,

Jassem Wannassi

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(16)

Published: April 1, 2025

Abstract Industrial dye contamination in water sources presents serious threats to both human health and the environment. Adsorption technology has gained popularity for wastewater treatment due its simplicity, cost‐effectiveness, use of environmentally friendly materials. This study investigates desorption methylene blue (MB) using zinc oxide nanoparticles (ZnO‐NPs) synthesized from ZIF‐7 (Zn(BIM)₂; BIM = Benzimidazole) with a sodalite zeolitic topology. The green synthesis ZnO‐NPs was characterized X‐ray powder diffraction Rietveld refinement (space group P63/mmc, b 3.252 (2) Å; c 5.207 (4) Å, α β 90°, γ 120°), Fourier transform infrared spectroscopy (FTIR), (XRD), transmission electron microscopy (TEM), energy dispersive (EDS), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller (BET) techniques, revealing surface area (29.93 g/m 2 ), nanoscale size (3 nm), hydroxyls. Under optimal conditions (pH 7, 10 mg/L concentration, 0.02 g adsorbent dose), achieved an adsorption efficiency 94.7% MB. capacity increased 62.7 mg/g at 298 K 85.16 328 K, isotherm showing physical as primary mechanism (adsorption energies <40 kJ/mol). Modeling revealed MB molecules adsorbed nonparallel ZnO‐NP surface.

Language: Английский

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