Novel Cobalt‐Supported Silica‐Coated Ferrite Nanoparticles Applicable for Acylation of Amine, Phenol, and Thiols Derivatives under Solvent‐Free Condition

Abstract

The straightforward co‐precipitation approach was used to effectively manufacture novel silica‐coated magnetic nanoparticles doped with cobalt (Co3O4). These nanoparticles were characterized using Field Emission Scanning Electron Microscopy (FE‐SEM), Energy‐Dispersive X‐ray Spectroscopy (EDS), Wavelength‐Dispersive Spectroscopy (WDX), Powder X‐ray Diffraction Spectroscopy (PXRD), Fourier transform infrared spectroscopy (FT‐IR), Thermo‐gravimetric Analysis (TGA), Inductive coupled plasma‐optical emission spectrometry (ICP‐OES), and Transmission Electron Microscopy (TEM), etc. Intriguingly, the catalytic performance of these nanocrystals for the amines, phenols, alcohols, and thiols acylation processes was examined in solvent‐free conditions, with outstanding yields. These nanoparticles were recycled at least 12 times without losing their catalytic activity.

Magnetite-supported montmorillonite (K10) (nanocat-Fe-Si-K10): an efficient green catalyst for multicomponent synthesis of amidoalkyl naphthol

“…2A. 53,54 The signicant signal at 3219.08 cm −1 indicates the OH stretching bandwidth of the molecule of water depicted in the sample. The signal has found at 1340.07 cm −1 and 1017.83 cm −1 , which indicated the presence of deionized water.…”

Enhancing the Cytocompatibility of Cobalt‐Iron Ferrite Nanoparticles Through Chemical Substitution and Surface Modification

“…[23][24][25][26] Amino silane is a commonly used coating for nanoparticles due to its biocompatibility and ability to improve the stability of the particles in biological environments. [26][27][28][29][30] In the literature, various modifications have been proposed for magnetite or cobalt ferrite magnetic nanoparticles, including the use of other materials such as silica, [31] chitosan, [32] or polyethylene glycol (PEG), [33] to improve their properties for biomedical applications. These modifications have shown promising results in terms of increased stability, biocompatibility, and reduced toxicity of the nanoparticles.…”

“…In the literature, various modifications have been proposed for magnetite or cobalt ferrite magnetic nanoparticles, including the use of other materials such as silica, [ 31 ] chitosan, [ 32 ] or polyethylene glycol (PEG), [ 33 ] to improve their properties for biomedical applications. These modifications have shown promising results in terms of increased stability, biocompatibility, and reduced toxicity of the nanoparticles.…”