Ultrasound-assisted adsorption of organic dyes in real water samples using zirconium (IV)-based metal-organic frameworks UiO-66-NH2 as an adsorbent

Heliyon, Journal Year: 2023, Volume and Issue: 9(11), P. e22001 - e22001

Published: Nov. 1, 2023

The utilization of dye adsorption through metal-organic frameworks represents an eco-friendly and highly effective approach in real water treatment. Here, ultrasound assisted was employed for the remediation three dyes including methylene blue (MB), malachite green (MG), congo red (CR) from samples using zirconium(IV)-based adsorbent (UiO-66-NH2). characterized structural, elemental, thermal morphological features XRD, XPS, FTIR, thermogravimetric analysis, SEM, BET , Raman spectroscopy. capacity to uptake pollutants aqueous solutions investigated under different experimental conditions such as amount UiO-66-NH2 at various contact durations, temperatures, pH levels, initial loading amounts. maximum removal optimal found be 938, 587, 623 mg g-1 towardMB, MG, CR, respectively. studied on surface a monolayer endothermic process. probable mechanism chemisorption follows pseudo-second-order kinetics. From findings regeneration studies, it deduced that can effectively used consecutive cycles without any momentous loss its efficacy. Furthermore, with ultrasound-assisted might help safeguard environment develop new strategies sustainability natural resources.

Language: Английский

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Fabrication of N-doped micro-mesoporous carbons from industrial alkali lignin with urea assistance for high-efficiency adsorption of methylene blue

Industrial Crops and Products, Journal Year: 2023, Volume and Issue: 203, P. 117146 - 117146

Published: July 12, 2023

Language: Английский

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Construction of attapulgite decorated cetylpyridinium bromide/cellulose acetate composite beads for removal of Cr (VI) ions with emphasis on mechanistic insights

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: May 28, 2024

Abstract Eco-friendly and renewable composite beads were constructed for efficient adsorptive removal of Cr (VI) ions. Attapulgite (ATP) clay decorated with cetylpyridinium bromide (CPBr) was impregnated into cellulose acetate (CA) beads, which formulated through a simple cost-effective solvent-exchange approach. FTIR, XRD, SEM, Zeta potential, XPS characterization tools verified the successful formation ATP–CPBr@CA beads. The displayed spherical porous shape positively charged surface (26.6 mV) at pH 2. In addition, higher adsorption performance accomplished by ease separation compared to their components. Meanwhile, equilibrium isotherms pointed out that Langmuir model optimal describing process maximal capacity 302 mg/g. Moreover, D–R isotherm physical process, while data obeyed pseudo-second-order kinetic model. Further, results hypothesized mechanism involves via electrostatic interactions, redox reaction, co-precipitation. Interestingly, reserved tolerable characteristics maximum present exceeding 70% after reuse seven successive cycles, proposing its feasible applicability as reusable easy-separable candidate removing heavy metals from aquatic bodies.

Language: Английский

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Cellulose acetate nanofiber modified with polydopamine polymerized MOFs for efficient removal of noxious organic dyes

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(20), P. 29992 - 30008

Published: April 10, 2024

Language: Английский

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Making Use of Local Waste: Adsorptive Removal of Novacron Red FN‐2BL Using CTAB‐Aided Sodium Hydroxide–Pretreated Jute Fibers

Journal of Engineering, Journal Year: 2025, Volume and Issue: 2025(1)

Published: Jan. 1, 2025

The purpose of our work was to increase the efficacy jute fibers through application two successive treatments: sodium hydroxide (NaOH) and cetyltrimethylammonium bromide (CTAB). goal remove dye Novacron Red FN‐2BL from wastewater. We thoroughly investigated how different parameters, such as initial concentration (20–100 mg/L), adsorbent dosage (0.01 g–0.10 g), contact time (2–16 min), pH (from 2 to12) temperature (298, 308, 318 K) affected kinetics removal dye. efficiency reactive by treated with surfactant CTAB (JST) peaked at 95% using 0.05 g/50 mL solution, an 40 mg/L, 7, 8 min, 298 K. A thorough understanding process adsorption made possible experimental setup, data fit effectively into a variety isothermal kinetic models. In particular, behavior well‐represented Langmuir isotherm model, followed pseudo‐second‐order model. Notably, remarkable 74.63 mg/g monolayer An endothermic phenomenon is reflected increasing value K F (Freundlich’s constant) on rising temperature. Furthermore, Dubinin–Radushkevich demonstrated physisorption‐like mechanism for red JST; magnitude E , which varied 1.29 2.24 KJ/mol when rose K, indicated process’s dependence. With respect thermodynamics, Δ H ∗ found be 11.73 KJ/mol, S determined 65.74 J/mol/K. entropy‐driven nature, spontaneity, feasibility JST are highlighted positive consistently negative G (ranging −7.87 −9.19 across all temperatures).

Language: Английский

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Optimization and application of Musa paradisiaca -derived mesoporous hydrogel beads for selective adsorption of potentially toxic elements from aqueous environments

Environmental Technology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 23

Published: March 27, 2025

Hydrogel beads were constructed using sodium alginate (SA) and banana pith powder (BPP). The ability of to adsorb Copper (Cu2+), Lead (Pb2+) Nickel (Ni2+) was examined SA-BPP ratios (1:1, 1:2, 1:3, 1:4, 1:5, 1:0 0:1). BET, FTIR, SEM-EDS, TGA ZP used analyse the composite structural characteristics. BET surface area (1:5) is found be 28.308 m2/g. impacts adsorbent blend ratio, dosage, adsorption contact time, pH, temperature evaluated. efficiency attained at (1:5), 0.3 g, 180 min, pH 6 35°C, with rates 83.38% for Cu2+, 77% Pb2+ 94.7% Ni2+. pseudo-first-order equation displayed good mechanism (R2 = 0.993, 0.998 0.994) Freundlich isotherm fits perfectly process 0.967) Langmuir 0.979 0.983) Cu2+ thermodynamic analysis shows that endothermic. removal determined by optimizing theoretical experiments through Box-Behnken Design (BBD). Cumulatively, Ni2+ ions have an electrostatic nature facilitates their easier acceptance electrons. After five cycles, a maximal effectiveness 75% achieved, which concludes long-lasting industrial wastewater.

Language: Английский

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Room Temperature-Built Gas Sensors from Green Carbon Derivative: A Comparative Study between Pristine SnO2 and GO-SnO2 Nanocomposite

Journal of nano research, Journal Year: 2024, Volume and Issue: 82, P. 77 - 94

Published: April 8, 2024

Room temperature-built gas sensors were fabricated from graphene oxide (GO), pristine and doped SnO 2 nanostructures. The as-synthesized green carbon derivative (GO) nanomaterials prepared waste plastic precursor using Modified Hummer’s methodology. Pristine GO-SnO nanocomposite synthesized employing a wet synthesis technique known as co-precipitation. as-prepared nanoparticles investigated for structural crystallographic morphological features X-ray diffractometry (XRD) Transmission electron microscopy (TEM) analytical techniques. High-angle annular dark field (HAADF) elemental quantifications of the nanopowders with Energy dispersive spectroscopy (EDX). Textural determined assistance Brunauer-Emmett-Teller (BET) analyzer. Thermogravimetric analysis (TGA) was performed to ascertain material stability degradability synthetic materials. Functional group bond structure conducted Fourier-transform infrared (FTIR) spectroscopy. Gas sensor devices tested responses towards CH 4 , H LPG, CO gases at 20 ppm concentrations each. sensing device showed optimal detection response respective analyte values 5.00, 5.08, 4.90 3.41 respectively. selectivity target in an order magnitude > LPG . device’s dynamic ascribed GO doping effect which relatively increased its surface area (46.48 m g -1 ) absorption sites.

Language: Английский

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Green nanomaterials: Synthesis and applications in wastewater treatment

Inorganic Chemistry Communications, Journal Year: 2023, Volume and Issue: 158, P. 111584 - 111584

Published: Oct. 12, 2023

Language: Английский

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Green Valorization of Waste Plastics to Graphene as an Upcycled Eco-Friendly Material for Advanced Gas Sensing

Recycling, Journal Year: 2024, Volume and Issue: 9(3), P. 38 - 38

Published: May 13, 2024

The valorization technique successfully transformed waste polyethylene terephthalate (PET) into valuable carbon nanomaterial (CN)/graphene, while doped and undoped ZnO nanopowders were synthesized via sol–gel methods. Utilizing XRD, BET, TEM, EDX, FTIR, TGA analyses, the synthesis of sp2 2D sheet, pristine, nanostructures was confirmed. Solid-state gas sensor devices, tested under 51% relative humidity (RH), 30 °C ambient temperature, 0.2 flow rate, exhibited a 3.4% enhanced response to H2 compared CO2 at 50 ppm concentrations over time. Notably, ZnO/CN surpassed CN alone, attributed dopant integration with decreasing order performance as > ZnO. This study underscores efficacy techniques in generating high-value nanomaterials their bolstering performance, demonstrating superior capabilities.

Language: Английский

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Facile synthesis of TiO₂–carbon composite doped nitrogen for efficient photodegradation of noxious methylene blue dye

RSC Advances, Journal Year: 2024, Volume and Issue: 14(46), P. 34298 - 34310

Published: Jan. 1, 2024

The present work demonstrates that the introduction of a nitrogen-doped carbon framework, synthesized through sol-hydrothermal method, significantly enhances photocatalytic degradation behavior TiO 2 towards methylene blue (MB).

Language: Английский

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