A green, porous and eco-friendly magnetic geopolymer adsorbent for heavy metals removal from aqueous solutions

Review on nanomaterials: Synthesis and applications

Eco-friendly functionalization of magnetic halloysite nanotube with SO 3 H for synthesis of dihydropyrimidinones

The synthesis of pyrido[2′,1′:2,3]imidazo[4,5-c]isoquinolines via a one-pot three-component reaction by using benzene-1,2-dicarbaldehyde, trimethylsilylcyanide and various pyridin-2-amines in the presence of a catalytic amount of superparamagnetic nano-Fe3O4@SiO2 anchored sulfuric acid in ethanol in good-to-high yields is described.

One-pot three-component synthesis of pyrido[2′,1′:2,3]imidazo[4,5-c]isoquinolines using Fe3O4@SiO2–OSO3H as an efficient heterogeneous nanocatalyst

Review of key factors controlling engineered nanoparticle transport in porous media.

Cellulose matrix embedded copper decorated magnetic bionanocomposite as a green catalyst in the synthesis of dihydropyridines and polyhydroquinolines

In this work, the preparation of a new magnetic hybrid core–shell nanomaterial is reported in four steps. The magnetic Fe3O4 nanoparticles were synthesized via a simple hydrothermal system. Tetraethyl orthosilicate was used as a source of SiO2 for the creation of Fe3O4@SiO2 core–shell nanoparticles. The subsequent functionalization of Fe3O4@SiO2 was achieved by using (3-chloropropyl)trimethoxysilane and triphenylphosphine. Finally, immobilization of the anionic part including the [CrO3Br]− was carried out to obtain Fe3O4@SiO2@PPh3@[CrO3Br]. The structure and morphology of the prepared nanocatalyst was characterized by using elemental analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and a vibrating sample magnetometer (VSM). The prepared catalyst showed efficient activity as an heterogeneous catalyst in the synthesis of 1,4-dihydropyridine derivatives at room temperature. Moreover, the catalyst can be readily recovered by simple magnetic decantation and can be recycled several times with no significant loss of catalytic activity.

Synthesis and characterization of magnetic bromochromate hybrid nanomaterials with triphenylphosphine surface-modified iron oxide nanoparticles and their catalytic application in multicomponent reactions

Surface modified SPIONs‐Cr(VI) ions‐immobilized organic‐inorganic hybrid as a magnetically recyclable nanocatalyst for rapid synthesis of polyhydroquinolines under solvent‐free conditions at room temperature

Hantzsch 1,4-dihyropyridine synthesis is one of the multicomponent reactions that is accomplished with different catalyst and under different conditions. In this work, this one-pot three-component and four-component reactions for the synthesis of 1,4dihyropyridine and polyhydroquinoline derivatives are described in the presence of biopolymer-based gamma-Fe2O3/Cu/cellulose as a nanocatalyst. This magnetic catalyst was very effective for this reaction, and it was carried out by simple work-up procedure under green and environmentally friendly conditions in ethanol at room temperature.

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Preparation of a Novel Biopolymer Cellulose-Based Nanocomposite by Coating of Gamma-Fe2O3/Cu Nanoparticles and Catalytic Application in Chemical Reactions

http://manuscript.elsevier.com/S0040403922001514/pdf/S0040403922001514.pdf

Negar Hamidi

Papers

Cellulose matrix embedded copper decorated magnetic bionanocomposite as a green catalyst in the synthesis of dihydropyridines and polyhydroquinolines

Synthesis and characterization of magnetic bromochromate hybrid nanomaterials with triphenylphosphine surface-modified iron oxide nanoparticles and their catalytic application in multicomponent reactions

Surface modified SPIONs‐Cr(VI) ions‐immobilized organic‐inorganic hybrid as a magnetically recyclable nanocatalyst for rapid synthesis of polyhydroquinolines under solvent‐free conditions at room temperature

Preparation of a Novel Biopolymer Cellulose-Based Nanocomposite by Coating of Gamma-Fe2O3/Cu Nanoparticles and Catalytic Application in Chemical Reactions

Regioselective alkylation of 2,4-dihydroxybenzyaldehydes and 2,4-dihydroxyacetophenones.