Recent trends of spinel ferrites (MFe2O4: Mn, Co, Ni, Cu, Zn) applications as an environmentally friendly catalyst in multicomponent reactions: A review

Case Studies in Chemical and Environmental Engineering, Год журнала: 2023, Номер 7, С. 100303 - 100303

Опубликована: Янв. 20, 2023

Metal ferrite (MFe2O4) is a type of ceramic oxide with magnetoelectric properties. In this review, we have collected and analyzed the research trends MFe2O4 as heterogeneous catalyst in multicomponent reactions (MCRs). could activate specific groups reactants by increasing their electrophilicity acting Lewis acid capable accepting electrons to form covalent bonds. Using has been shown produce simple high yields, easy separate, more environmentally friendly. As reusable green catalyst, spinel stability, so it can be used repeatedly.

Язык: Английский

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Heterogeneous Sono-Fenton like catalytic degradation of metronidazole by Fe3O4@HZSM-5 magnetite nanocomposite

Heliyon, Год журнала: 2023, Номер 9(6), С. e16461 - e16461

Опубликована: Май 26, 2023

In this research, Fe3O4@HZSM-5 magnetic nanocomposite was synthesized via a coprecipitation method for metronidazole (MNZ) degradation from aqueous solutions under ultrasonic irradiation which showed superb sonocatalytic activity. The magnetite characterized by using field-emission scanning electron microscope-energy dispersive X-ray Spectroscopy, (FESEM-EDS), Line Scan, Dot Mapping, diffraction (XRD), vibrating sample magnetometer (VSM), and Brunauer-Emmett-Teller (BET). To investigate the activity of nanocomposite, removal conditions were optimized evaluating influences operating parameters like dosage catalyst, reaction time, pH, concentration H2O2, MNZ concentration, pH on removal. maximum efficiency TOC at time 40 min, catalyst dose 0.4 g/L, H2O2 1 mM, initial 25 mg/L, 7 achieved 98% 81%, respectively. Additionally, in real wastewater optimal obtained 83%. results that Langmuir-Hinshelwood kinetic model KL-H = 0.40 L mg-1, KC 1.38 mg/L min) can describe process. radical scavenger tests indicated major reactive oxygen species formed hydroxyl radicals Sono-Fenton-like Evaluation reusability an 85% reduction after seven cycles. Based results, it be concluded as heterogeneous nano-catalysts to effectively degrade MNZ, observed stability recyclability demonstrated promising treatment contaminated with antibiotics.

Язык: Английский

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Amine functionalized magnetic resorcinol formaldehyde as a green and reusable nanocatalyst for the Knoevenagel condensation

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 22, 2025

Язык: Английский

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A controllable one-pot hydrothermal synthesis of spherical cobalt ferrite nanoparticles: synthesis, characterization, and optical properties

RSC Advances, Год журнала: 2022, Номер 12(38), С. 25081 - 25095

Опубликована: Янв. 1, 2022

We herein report the controllable synthesis of spherical cobalt ferrite nanoparticles with average crystallite size in range 3.6-12.9 nm using a facile, eco-friendly, hydrothermal method. The treatment was carried out by utilizing nitrate, ferric and ammonium hydroxide presence absence Arabic gum as surfactant agent. purity crystallinity products were tuned varying reaction conditions such time (0.5-8 h), temperature (120-180 °C), percentage ethylene glycol (0-100% (v/v)), pH (8-9.6), amount (0-2 g). characterized prepared X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FT-IR), high-resolution transmission (HR-TEM), energy-dispersive analysis (EDS), selected area (SAED) patterns, UV-visible diffuse reflectance spectra (DRS). optimal performed at 180 °C 9.6 for 4 h aqueous media. results also revealed that as-prepared spinel have an estimated optical band gap energy ca. 1.6-1.9 eV, indicating semiconducting characteristics products.

Язык: Английский

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Investigation of Fe₃O₄@boehmite NPs as efficient and magnetically recoverable nanocatalyst in the homoselective synthesis of tetrazoles

RSC Advances, Год журнала: 2022, Номер 12(52), С. 33459 - 33468

Опубликована: Янв. 1, 2022

Magnetic boehmite nanoparticles were synthesized from a hybrid of and Fe 3 O 4 nanoparticles. Then, it was applied as homoselective, highly efficient, cheep, heterogeneous recoverable nanocatalyst in the synthesis tetrazole derivative.

Язык: Английский

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Advanced metal oxide-based nanocatalysts for the oxidative synthesis of fine chemicals

Materials Advances, Год журнала: 2023, Номер 4(8), С. 1795 - 1830

Опубликована: Янв. 1, 2023

The present review article sheds light on the fabrication of heterogeneous metal oxide-supported nanostructure-based catalysts for boosting industrially significant oxidation processes.

Язык: Английский

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Ferrite Nanoparticles as Catalysts in Organic Reactions: A Mini Review

Magnetochemistry, Год журнала: 2023, Номер 9(6), С. 156 - 156

Опубликована: Июнь 14, 2023

Ferrites have excellent magnetic, electric, and optical properties that make them an indispensable choice of material for a plethora applications, such as in various biomedical fields, magneto–optical displays, rechargeable lithium batteries, microwave devices, internet technology, transformer cores, humidity sensors, high-frequency media, magnetic recordings, solar energy fluids. Recently, magnetically recoverable nanocatalysts are one the most prominent fields research they can act both homogeneous heterogenous catalysts. Nano-ferrites provide large surface area organic groups to anchor, increase product decrease reaction time, providing cost-effective method transformation. Various reactions were reported, photocatalytic decomposition different dye, alkylation, dehydrogenation, oxidation, C–C coupling, etc., with nano-ferrites catalyst. Metal-doped ferrites Co, Ni, Mn, Cu, Zn, along metal doped Cr, Cd, Ag, Au, Pt, Pd, or lanthanides modified silica titania, used catalysts reactions. Metal (MFe2O4) Lewis acid electrophilicity specific reactants by accepting electrons order form covalent bonds. Ferrite easily applying external field their reuse without significantly losing catalytic activities. The use transformations reduces catalyst overloading and, at same harmful solvents production poisonous byproducts, hence, serving green chemical synthesis. This review provides insight into application transformations.

Язык: Английский

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Cu-Decorated CMC-g-PAA/Fe3O4 Hydrogel Nanocomposite: High-Efficiency and Reusable Catalyst for Synthesis of 1,2,3-Triazoles via Click Reaction in Water

Journal of Polymers and the Environment, Год журнала: 2025, Номер unknown

Опубликована: Фев. 27, 2025

Язык: Английский

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High-performance Fe3O4@SiO2@M-D and Fe3O4@SiO2@M-D-Cu with amine branches and decorated with copper metal for one-pot synthesis of chromene and xanthene derivatives

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Март 27, 2025

In this project, we introduced new heterogeneous nanocatalysts featuring amine branches and decorated with inexpensive copper metal (Fe3O4@SiO2@M-D-Cu Fe3O4@SiO2@M-D). These were characterized using several analytical techniques, including SEM, FT-IR, EDX, XRD, TGA, ICP-OES. We investigated their catalytic activity in traditional pot reactions, focusing on the three-component synthesis of xanthene chromene compounds. The properties future potential these include high yield, recyclability, ease operation, use environmentally friendly solvents. Additionally, catalysts can be easily removed from reaction solution an external magnet reused up to eight times without a decrease activity.

Язык: Английский

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Cucurbit[6]uril-Supported Fe₃O₄ Magnetic Nanoparticles Catalyzed Green and Sustainable Synthesis of 2-Substituted Benzimidazoles via Acceptorless Dehydrogenative Coupling

ACS Omega, Год журнала: 2022, Номер 7(11), С. 9754 - 9764

Опубликована: Март 14, 2022

A new composite, cucurbit[6]uril (CB[6])-supported magnetic nanoparticles, Fe3O4–CB[6], was synthesized via a co-precipitation method in air and fully characterized by Fourier transform infrared spectroscopy, powder X-ray diffraction, photoelectron field-emission scanning electron microscopy, high-resolution transmission energy-dispersive thermogravimetric analysis, inductively coupled plasma–mass spectrometry, vibrating sample magnetometry techniques. It has been found to be highly efficient, economic, sustainable heterogeneous catalyst employed for the first time synthesis of series biologically important 2-substituted benzimidazoles from various benzyl alcohols 1,2-diaminobenzenes under solvent-free conditions acceptorless dehydrogenative coupling afford corresponding products good excellent yields (68–94%). The nature nanocomposite facilitates facile recovery reaction mixture an external magnet. can reused up five times with negligible loss its catalytic activity. All isolated were 1H 13C{1H} NMR spectroscopy.

Язык: Английский

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