An effective-green strategy of methylene blue adsorption: Sustainable and low-cost waste cinnamon bark biomass enhanced via MnO2

Journal of environmental chemical engineering, Год журнала: 2023, Номер 11(3), С. 110254 - 110254

Опубликована: Июнь 1, 2023

Язык: Английский

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Construction and Characterization of 5,6-O-Isopropylidene-L-Ascorbic Acid-Loaded Silver and Manganese Dioxide Nanoparticles: Cytotoxicity Study, Antibacterial, and Antioxidant Activities

Materials Chemistry and Physics, Год журнала: 2025, Номер unknown, С. 130517 - 130517

Опубликована: Фев. 1, 2025

Язык: Английский

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Process Optimization and Equilibrium, Thermodynamic, and Kinetic Modeling of Toxic Congo Red Dye Adsorption from Aqueous Solutions Using a Copper Ferrite Nanocomposite Adsorbent

Molecules, Год журнала: 2024, Номер 29(2), С. 418 - 418

Опубликована: Янв. 15, 2024

In the present investigation of copper ferrite, a CuFe2O4 nanocomposite adsorbent was synthesized using sol–gel method, and its relevance in adsorptive elimination toxic Congo red (CR) aqueous phase examined. A variety structural methods were used to analyze nanocomposite; as-synthesized had agglomerated clusters with porous, irregular, rough surface that could be seen FE-SEM, it also contained carbon (23.47%), oxygen (44.31%), (10.21%), iron (22.01%) elemental composition by weight. Experiments designed achieve most optimized system through utilization central composite design (CCD). The highest uptake CR dye at equilibrium occurred when initial pH value 5.5, adsorbate concentration 125 mg/L, dosage 3.5 g/L. Kinetic studies conducted, they showed adsorption process followed pseudo-second-order (PSO) model (regression coefficient, R2 = 0.9998), suggesting chemisorption mechanism, overall reaction rate governed both film pore diffusion molecules. which molecules taken up onto particle revealed interactions involving electrostatic forces, hydrogen bonding, filling. According isotherm studies, data exhibited strong agreement Langmuir (R2 0.9989), demonstrating maximum monolayer capacity (qmax) 64.72 mg/g 6 302 K. Considering obtained negative ΔG positive ΔHads ΔSads values across all tested temperatures thermodynamic investigations, confirmed characterized as endothermic, spontaneous, feasible, an increased level randomness. developed this study is anticipated find extensive application effluent treatment, owing excellent reusability remarkable capability effectively remove comparison other adsorbents.

Язык: Английский

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Tailored spherical-sea urchin-like MnO2-AC/PTA nanocomposites for superior photocatalytic degradation of BPA and Orange II dye, along with bacteria Inactivation: Mechanistic insights

Process Safety and Environmental Protection, Год журнала: 2024, Номер 184, С. 1332 - 1343

Опубликована: Фев. 20, 2024

Язык: Английский

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Preparation and characterization of oat hulls-filled-sodium alginate biocomposite microbeads for the effective adsorption of toxic methylene blue dye

International Journal of Biological Macromolecules, Год журнала: 2024, Номер unknown, С. 135800 - 135800

Опубликована: Сен. 1, 2024

Язык: Английский

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Selective Phase Control and Enhanced Electrochemical Performance of rGO-MnO2 Nanocomposites for Supercapacitor Electrodes via Solution Plasma Process: A Greener Alternative to Hydrothermal Process

Materials Chemistry and Physics, Год журнала: 2025, Номер unknown, С. 130948 - 130948

Опубликована: Апрель 1, 2025

Язык: Английский

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Insights into nanocomposite materials for gas sorption applications

Nano-Structures & Nano-Objects, Год журнала: 2024, Номер 38, С. 101127 - 101127

Опубликована: Март 9, 2024

Язык: Английский

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Adsorptive removal of methylene blue dye by a ternary magnetic rGO/AK/Fe3O4 nanocomposite: Studying adsorption isotherms, kinetics and thermodynamics

Chemical Physics Impact, Год журнала: 2024, Номер unknown, С. 100800 - 100800

Опубликована: Дек. 1, 2024

Язык: Английский

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Fabrication of Nanocellulose/Chitosan Nanocomposite Based on Loofah Sponge for Efficient Removal of Methylene Blue: Thermodynamic and Kinetic Investigations

Journal of Inorganic and Organometallic Polymers and Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 13, 2024

Abstract We established three nano-solid adsorbents: nanocellulose based on plant loofah sponge (NC), chitosan (CS), and nanocellulose/chitosan composite (CSC). These substances were employed as solid adsorbents to eliminate methylene blue (MB) dye from wastewater. Various characterization techniques investigate all the synthesized adsorbents, including TGA (thermogravimetric analysis), XRD (X-ray diffraction spectra), (BET) nitrogen gas adsorption-desorption, SEM (scanning electron microscope), TEM (transmission microscopy), FTIR (Fourier transform infrared) spectrometer, zeta potential. According our results, CSC showed greater thermal stability than LS NC but lower CS, mesoporous (2.012 nm), higher total pore volume (0.366 cm 3 . g − 1 ), specific surface area (639.3 m 2 pH pzc of 7.22. The static adsorption MB was well described by Langmuir ( R > 0.9872), Temkin 0.9668), Dubinin-Radushkevich 0.9485) models. exhibited highest capacity (301.20 mg. ) at 47 °C after a 24 h shaking period dosage g. L adsorbent 7. fabricated materials fitted with linear PSO 0.9806) Elovich 0.9574) kinetic model. enthalpy, entropy, free energy change for onto determined be 47.11 kJ. mol , 0.172 K 3.29 respectively 20 °C. Thermodynamic investigation that is spontaneous, endothermic, favorable (0 < <1, 0.017–0.313), physisorption E DR 8 ). Compared other eluents, nitric acid produced desorption percentage (98.5%).

Язык: Английский

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Biogenic production of eco-friendly Arjuna-ZnO NPs for sunlight-activated efficient degradation of organic dyes of high commercial usage

Journal of Saudi Chemical Society, Год журнала: 2024, Номер 28(3), С. 101851 - 101851

Опубликована: Апрель 2, 2024

The present study describes an environmentally benign biological method for the production of zinc oxide nanoparticles (ZnO NPs) by blending water-based leaf extract from a sustainable bio-source, Arjuna tree, under ambient conditions. Aqueous comprised different reducing agents appeared as precursor phytofabrication, and nitrate hexahydrate (ZnNO3·6H2O) acted source. phytofabricated Arjuna-ZnO NPs had hexagonal shape with average size 31.14 nm, revealed HR-TEM, FE-SEM micrographs, XRD patterns. FESEM-EDS micrograph patterns also elemental composition, phase purity, crystalline nature NPs. initial formation ZnO was confirmed absorption maxima at approximately 376 nm Zn-O stretching vibrations 520 cm−1 using UV–VIS FT-IR spectrophotometers, respectively. aqueous analysed spectrophotometer to identify functional groups bioactive substances that participated in reduction encapsulation processes. efficacy assessed terms their ability photocatalyzed on three noxious dyes, methylene blue (MB), methyl orange (MO), congo red (CR), high commercial industrial usage. were photoactive proved highly efficient effective nano-photocatalysts photodegradation MB, MO, CR, natural sunshine, underscoring potential remediation environmental pollutants. degradation process adhered pseudo-first-order kinetics adsorption kinetics.

Язык: Английский

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