Enhanced antibacterial performance of Fe3O4–Ag and MnFe2O4–Ag nanocomposites

Abstract

In this work, we have described the antibacterial activities of Fe 3 O 4 nanoparticles with different organic parts, including Humic acid (HA), Nicotinic acid (Nico) and Histidine (His), and the antibacterial activity of MnFe 2 O 4 nanoparticles coated with PANI and SiO 2 against different bacteria and some standard antibacterial drugs. The present study revealed that the newly fabricated various Fe 3 O 4 and MnFe 2 O 4 nanocomposites, when combined with some different organic parts, are superiour antibacterial agents. Also, the synthesized nanocomposites can be easily separated from aqueous solution by magnetic filtration without any contamination of the medium.

Synthesis and comparative studies of MnFe2O4 nanoparticles with different natural polymers by sol–gel method: structural, morphological, optical, magnetic, catalytic and biological activities

“…The antimicrobial activity of nanoparticles depends on the size and morphologies of the samples [20,21]. So far limited information is available on the antimicrobial properties of MnFe 2 O 4 NPs.…”

Fe 3 O 4 /Ag nanocomposite biosynthesised using Spirulina platensis extract and its enhanced anticancer efficiency

“…Recently, there is a need to develop the efficient biological activity of nanomaterials. The combination of magnetic properties of magnetite and surface properties of Ag nanoparticles cause efficient benefits in catalysis, targeting therapy, and biological targeting [13].…”

Cobalt supported on dendronized magnetic nanoparticles: A new highly efficient and recyclable catalyst for the Mizoroki–Heck cross‐coupling reaction

“…[15] Dendrimers are an attractive type of macromolecules with homogeneous, hyperbranched and spherical structure, with distinguished properties including nanoscale size, multifunctional terminal surfaces, monodispersity, high density of accessible active sites, intensive internal porosity, host-guest potential, and moderate biocompatibility. [20][21][22][23][24][25] So, inspired by the advantages of magnetic PAMAM and the drawbacks of palladium complexes, we were persuaded to immobilize first-row transition metal-PAMAM complexes on MNPs to ameliorate more affordable and eco-friendly heterogeneous palladium-free catalysts for carbon-carbon cross-coupling reaction. [15] These special features make dendrimers promising candidates for effective supports.…”

“…[19] To date there are rare examples of the usage of metal-PAMAM anchored to MNPs with the catalytic demeanor in the organic transformations. [20][21][22][23][24][25] So, inspired by the advantages of magnetic PAMAM and the drawbacks of palladium complexes, we were persuaded to immobilize first-row transition metal-PAMAM complexes on MNPs to ameliorate more affordable and eco-friendly heterogeneous palladium-free catalysts for carbon-carbon cross-coupling reaction. Cobalt-catalyzed couplings have recently been very much considered, because cobalt is non-toxic, readily available, stable in air, low cost and reveals powerful catalytic activities.…”