Synthesis and characterization of a novel magnetic chitosan–nickel ferrite nanocomposite for antibacterial and antioxidant properties

Abstract

A novel nanomagnet modified with nickel ferrite nanoparticles (NPs) coated with hybrid chitosan (Cs–NiFe2O4) was synthesized using the co-precipitation method. The resulting nanomagnets were characterized using various techniques. The size of the nanomagnetic particles was estimated to be about 40 nm based on the transmission electron microscopy (TEM) image and X-ray diffraction analysis (XRD) pattern (using the Debye–Scherrer equation). Scanning electron microscopy (SEM) images indicated that the surface of Cs–NiFe2O4 NPs is flatter and smoother than the uncoated NiFe2O4 NPs. According to value stream mapping (VSM) analysis, the magnetization value of Cs–NiFe2O4 NPs (17.34 emu/g) was significantly lower than NiFe2O4 NPs (40.67 emu/g). The Cs–NiFe2O4 NPs indicated higher antibacterial properties than NiFe2O4 NPs and Cs. The minimum inhibitory concentrations of Cs–NiFe2O4 NPs against S. aureus and E. coli were 128 and 256 mg/mL, respectively. Antioxidant activity (evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging test) for NiFe2O4 NPs and Cs–NiFe2O4 NPs at the concentration of 100 µg/mL were 35% and 42%, respectively. Consequently, the synthesized Cs–NiFe2O4 NPs can be proposed as a viable material for biomedical applications.

Modeling sunset yellow removal from fruit juice samples by a novel chitosan-nickel ferrite nano sorbent

“…The TEM images indicated a uniform distribution of Cs@NiFe 2 O 4 NPs with a typical size of 25 ± 5.05 nm. This finding confirms the potential of the developed composite material as an effective platform for a wide range of applications 42 , 56 .…”

“…The suspension was stirred at ambient temperature for 3 h at 500 rpm. Following this, the mixture was centrifuged to separate the resulting brown precipitates (CS@NiFe 2 O 4 NPs), and then rinsed with ethanol and distilled water before being dried at 60 °C for 12 h 41 , 42 . The schematic image of the adsorbent synthesis method is presented in Fig.…”

Exploring Dielectric and Magnetic Properties of Ni and Co Ferrites through Biopolymer Composite Films

“…In the CG11Ni sample, none of the peaks ascribed to chitosan are visible. This can be justified by the disruption of the well-crystalline linear structure of chitosan due to interaction with various monomers since amine and hydroxyl groups on the polymeric structure of chitosan interact non-covalently with nanoparticles [42]. However, the five narrow peaks observed can be assigned to NiFe 2 O 4 , in agreement with the ICDD 04-014-8286 [43].…”

Employing a magnetic chitosan/molybdenum disulfide nanocomposite for efficiently removing polycyclic aromatic hydrocarbons from milk samples

“…2 C). This phenomenon can be attributed to the presence of additional materials in the nanocomposite, which can alter the magnetic properties of Fe 3 O 4 35 . It is worth noting that magnetic nanocomposites have potential applications as adsorbents for removing toxic agents from aqueous solutions due to their high surface-to-volume ratio, water repellency, fast diffusion, and super-magnetism 51 , 52 .…”