Advancements in wastewater Treatment: A computational analysis of adsorption characteristics of cationic dyes pollutants on amide Functionalized-MOF nanostructure MIL-53 (Al) surfaces

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 319, P. 124081 - 124081

Published: May 16, 2023

Language: Английский

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Magnetic Nitrogen-Rich UiO-66 Metal–Organic Framework: An Efficient Adsorbent for Water Treatment

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(25), P. 30106 - 30116

Published: June 15, 2023

The postsynthetic modification of metal-organic frameworks (MOFs) has opened up a promising area to widen their water treatment application. However, polycrystalline powdery state still restricts widespread industrial-scale applications. Herein, the magnetization UiO-66-NH2 is reported as approach facilitate separation used MOFs after treatment. A two-step postmodification procedure employing 2,4,6-trichloro-1,3,5-triazine (TCT) and 5-phenyl-1H-tetrazole (PTZ) agents was introduced level adsorption performance magnetic nanocomposite. Despite decrement in porosity specific surface designed (m-UiO-66-TCT) compared neat UiO-66-NH2, it outweighs capacity. It observed that m-UiO-66-TCT an capacity ≈298 mg/g for methyl orange (MO) with facile MOF using external magnet. Pseudo-second-order kinetic model Freundlich isotherm models suitably interpret experimental data. Thermodynamic studies showed MO removal spontaneous thermodynamically favorable at higher temperatures. composite exhibited easy separation, high capacity, good recyclability, rendering attractive candidate adsorptive dye from aqueous environments.

Language: Английский

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Novel ZIF-8/CNC Nanohybrid with an Interconnected Structure: Toward a Sustainable Adsorbent for Efficient Removal of Cd(II) Ions

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(3), P. 3862 - 3875

Published: Jan. 9, 2024

Water pollution, especially by heavy metals, continues to pose significant challenges, emphasizing the urgency develop sustainable processes remove pollutants while developing materials derived from renewable sources. In present research, a nanoscale adsorbent was prepared cadmium (Cd(II)) ions wastewater hybridizing zeolitic imidazolate framework-8 (ZIF-8) with cellulose nanocrystal (CNC). The nanohybrid exhibited an interconnected structure in which ZIF-8 particles were connected each other via CNC nanoneedles. hybridization of caused enhancement adsorption performance fabricated compared pure ZIF-8, increasing its capacity nearly 36%. ZIF/CNC followed Langmuir isotherm model and pseudo-second-order kinetics models, remarking homogeneous onto surface ZIF/CNC, where chemisorption controlled rate adsorption. thermodynamic study uncovered that is spontaneous, endothermic, entropy-governed as randomness increased at solid–liquid interface. Additionally, influence operating variables, such temperature, dosage, pH, ionic strength, studied mimic capabilities real conditions. Accordingly, optimum conditions found be 45 °C pH = 7 dosage 0.4 g/L for adsorbent. Moreover, multimetal solution showed can various including Cd(II), Fe(III), Cu(II), Pb(II) simultaneously. Finally, regeneration confirmed great potential nanohybrid, retained 94% initial after 5 consecutive adsorption/desorption cycles.

Language: Английский

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ZIF‐8 Composites for the Removal of Wastewater Pollutants

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(24)

Published: June 24, 2024

Abstract The presence of dyes in wastewater poses a significant environmental challenge due to their permanence toxicity and potential harm ecosystems. Because high porosity adjustable characteristics, metal‐organic frameworks (MOFs) have become attractive materials for effective dye removal. Among various MOFs, zeolitic imidazolate (ZIFs) garnered attention, especially ZIF‐8, its excellent stability, porosity, pore size remarkable adsorption capacity. This review article provides comprehensive overview recent advances the implementation ZIF‐8 composites removal pollutants from wastewater. synthesis methods, structural characteristics performance are discussed. Furthermore, impact different factors such as pH, temperature, concentration, contact time etc. were also highlighted. Moreover, detailed mechanism was Finally, current challenges future perspectives production based on presented.

Language: Английский

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Adsorptive removal of toxic heavy metals from aquatic environment by metal organic framework (MOF): A review

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 70, P. 106867 - 106867

Published: Jan. 5, 2025

Language: Английский

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Investigation the effect of exchange solvents on the adsorption performances of Ce-MOFs towards organic dyes

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 27, 2025

Language: Английский

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Polyurethane-based membranes for CO2 separation: A comprehensive review

Progress in Energy and Combustion Science, Journal Year: 2023, Volume and Issue: 97, P. 101095 - 101095

Published: April 19, 2023

Language: Английский

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Efficient removal of organic dyes using electrospun nanofibers with Ce-based UiO-66 MOFs

Ecotoxicology and Environmental Safety, Journal Year: 2023, Volume and Issue: 266, P. 115584 - 115584

Published: Oct. 30, 2023

Cerium-based UiO-66 (Ce-UiO-66) metal-organic frameworks (MOFs) were synthesized via a facile solvothermal method and fully characterized using FTIR, XRD, BET, SEM, EDX, zeta potential techniques. The Ce-UiO-66 particles embedded into an electrospun cross-linked polyvinyl alcohol (PVA)/chitosan (CTS) nanofiber (EPCNF), then employed to remove organic dyes from water. adsorption results demonstrated that the capacities of both anionic (Congo Red (CR), Methyl Orange (MO) (MR)) cationic (Methylene Blue (MB)) over fabricated nanofibers (ENFs) increased with increasing loadings MOFs. Accordingly, performance EPCNF-10 (containing 10 wt% MOFs) adsorbent toward these is in order CR (102.04 mg/g) > MO (87.71 MR (65.35 MB (34.24 mg/g). Moreover, it was found Freundlich isotherm model pseudo-second-order kinetic appropriate for describing behaviors dyes. Thus, can be proposed would effective materials removal water due its excellent performance, preparation, good regeneration, simple separation aqueous solutions.

Language: Английский

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Green Synthesis of Cerium-Based Metal–Organic Framework (Ce-UiO-66 MOF) for Wastewater Treatment

Langmuir, Journal Year: 2023, Volume and Issue: 39(49), P. 17798 - 17807

Published: Nov. 30, 2023

Green synthesis of metal-organic frameworks (MOFs) in aqueous solutions under ambient conditions with reduced production costs and environmental effects is an efficient technique to transfer lab-scale industrial large scale. Hence, this work proposes a green, low-cost, sustainable, rapid, innovative synthetic strategy produce cerium-based (Ce-UiO-66) MOFs the presence water as green solvent. This exhibits great potential compared conventional solvothermal techniques, it does not need external activation energy organic solvents, which can achieve standards chemistry. Ce-UiO-66 MOF was synthesized successfully utilized adsorbent efficiently eliminate anionic Congo Red (CR) dye from dye-containing wastewater. The experimental adsorption results were well matched pseudo-second-order kinetic Langmuir isotherm models, maximum CR capacity measured be about 285.71 mg/g. To evidence applicability adsorption, reaction performed interfering pollutants [e.g., salts (NaCl, KCl, MgCl2) cationic dyes (Malachite (MG) Methylene Blue (MB)], where prove promising performances toward dye. Interestingly, exhibited high structural stability during repeated adsorption-desorption cycles, surface area decreased 555 376 m2/g after three while its by only 10% that fresh adsorbent. All these outstanding properties indicate will effective for wastewater treatment applications.

Language: Английский

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3D-Printed MOF Monoliths: Fabrication Strategies and Environmental Applications

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Aug. 15, 2024

Metal-organic frameworks (MOFs) have been extensively considered as one of the most promising types porous and crystalline organic-inorganic materials, thanks to their large specific surface area, high porosity, tailorable structures compositions, diverse functionalities, well-controlled pore/size distribution. However, developed MOFs are in powder forms, which still some technical challenges, including abrasion, dustiness, low packing densities, clogging, mass/heat transfer limitation, environmental pollution, mechanical instability during process, that restrict applicability industrial applications. Therefore, recent years, attention has focused on techniques convert MOF powders into macroscopic materials like beads, membranes, monoliths, gel/sponges, nanofibers overcome these challenges.Three-dimensional (3D) printing technology achieved much interest because it can produce many high-resolution with complex shapes geometries from digital models. this review summarizes combination different 3D strategies MOF-based for fabricating 3D-printed monoliths applications, emphasizing water treatment gas adsorption/separation Herein, various fabrication such direct ink writing, seed-assisted in-situ growth, coordination replication solid precursors, matrix incorporation, selective laser sintering, light processing, described relevant examples. Finally, future directions challenges also presented better plan trajectories shaping improved control over structure, composition, textural properties monoliths.

Language: Английский

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