One-pot synthesis of substituted 4 H -chromenes by nickel ferrite nanoparticles as an efficient and magnetically reusable catalyst

doi:10.3906/kim-1710-14

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…The low recovery costs of catalysts is a significant factor in the development of sustainable catalyst systems [35][36][37][38][39][40][41]. Therefore, magnetically supported catalyst systems are considered to be one of the most important platforms as they can be easily separated from the reaction media via the aid of an external magnet [28,42,43 No significant change was observed in the ATR-FTIR spectra of MnFe2O4@SiO2-Ag on doping with AgNPs except minor intensity and position changes in the ∼750-1250 cm -1 region.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

Reductant free green synthesis of magnetically recyclable MnFe2O4@SiO2-Ag core- shell nanocatalyst for the direct reduction of organic dye pollutants

2021

Turk J Chem

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The present paper describes in situ green immobilization of silver nanoparticles on MnFe2O4@SiO2 nanospheres using Epilobium parviflorum (EP) without using any other toxic chemicals and reducing or stabilizing agents. The morphology, composition, and magnetic properties of the resulting MnFe2O4@SiO2-Ag core-shell nanocatalyst were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), 2 thermogravimetric analysis (TGA), X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR).The catalytic performance of the as synthesized MnFe2O4@SiO2-Ag was employed on the organic pollutants dyes such as rhodamine B (RhB) and methylene blue (MB). The results revealed significant reduction performances for the MB (116.28 s -1 g -1 ) and RhB (27.12 s -1 g -1 ) over the existing literature. Furthermore, the MnFe2O4@SiO2-Ag exhibited a higher stability for the completion of the reduction of RhB between the reaction times of 13.1 (first) and 19.8 min (final) with the 100% decolorization efficiency even after several cycles with an excellent magnetic separation. Overall, this work demonstrates a simple and practical green synthetic route for the preparation of magnetic recyclable core-shell nanocatalyst that can be good candidates for the treatment of organic contaminants in wastewater adhering to green chemistry principles for the environmental pollution concerns.

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Section: Synthesis and Characterizationmentioning

confidence: 99%

Reductant free green synthesis of magnetically recyclable MnFe2O4@SiO2-Ag core- shell nanocatalyst for the direct reduction of organic dye pollutants

2021

Turk J Chem

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Contemporary Progress in the Applications of Iron-based Magnetic Nanoparticles in Multicomponent Synthesis: A Review

Bharti

Srivastava

Thakur

et al. 2023

COC

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In recent decades, organic synthetic reactions have advanced towards a greener and sustainable reactions by the usage of magnetic nanoparticles (MNPs). Such nanoparticles can be quickly recovered and reused in various organic syntheses. MNPs are a sustainable methodology while encountering environmental and profitable advantage. Due to their properties, MNPs have broad impacts on multiple fields. For instance, their size and magnetic properties have significant implications for various biomedicine, environmental remediation projects, and catalysis. MNPs are an alternative to conventional materials. These are smaller and have a high surface area that allows them to have copious catalytic sites. Amongst various MNPs, iron-based nanoparticles are being profoundly explored in different multicomponent reactions (MCRs). A convergent reaction, which retains most of the significant atoms of the starting components. This investigation targets to equip its readers a brief appertaining to nanoparticles, their processing, and characterization and summarize the evolution in applications of Iron-based MNPs in multicomponent synthetic procedures since 2010.

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One-pot synthesis of substituted 4 H -chromenes by nickel ferrite nanoparticles as an efficient and magnetically reusable catalyst

Cited by 2 publications

References 18 publications

Reductant free green synthesis of magnetically recyclable MnFe2O4@SiO2-Ag core- shell nanocatalyst for the direct reduction of organic dye pollutants

Reductant free green synthesis of magnetically recyclable MnFe2O4@SiO2-Ag core- shell nanocatalyst for the direct reduction of organic dye pollutants

Contemporary Progress in the Applications of Iron-based Magnetic Nanoparticles in Multicomponent Synthesis: A Review

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