The synthesis and characterization of monodispersed chitosan-coated Fe3O4 nanoparticles via a facile one-step solvothermal process for adsorption of bovine serum albumin

Abstract

Preparation of magnetic nanoparticles coated with chitosan (CS-coated Fe3O4 NPs) in one step by the solvothermal method in the presence of different amounts of added chitosan is reported here. The magnetic property of the obtained magnetic composite nanoparticles was confirmed by X-ray diffraction (XRD) and magnetic measurements (VSM). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) allowed the identification of spherical nanoparticles with about 150 nm in average diameter. Characterization of the products by Fourier transform infrared spectroscopy (FTIR) demonstrated that CS-coated Fe3O4 NPs were obtained. Chitosan content in the obtained nanocomposites was estimated by thermogravimetric analysis (TGA). The adsorption properties of the CS-coated Fe3O4 NPs for bovine serum albumin (BSA) were investigated under different concentrations of BSA. Compared with naked Fe3O4 nanoparticles, the CS-coated Fe3O4 NPs showed a higher BSA adsorption capacity (96.5 mg/g) and a fast adsorption rate (45 min) in aqueous solutions. This work demonstrates that the prepared magnetic nanoparticles have promising applications in enzyme and protein immobilization.

SYNTHESIS AND PHYSICOCHEMICAL PROPERTIES OF MAGNETITE NANOPARTICLES (Fe3O4) AS POTENTIAL SOLID SUPPORT FOR HOMOGENEOUS CATALYSTS

“…confirms the physisorption and chemisorption processes occurring at the surface of the MNPs [19]. The third peak is at the range 500-750 ᵒC where the percentage of mass loss is about 4% attributed to the phase transition from magnetite to hematite [20].…”

Synthesis of nitrogen doped carbon quantum dots/magnetite nanocomposites for efficient removal of methyl blue dye pollutant from contaminated water

“…[19][20][21][22][23] In preparation of Fe 3 O 4 -chitosan nanocomposites, the surface of magnetite modied with amine and hydroxyl groups on chitosan. 24 As a class of newly emerging uorescent nanomaterials, carbon quantum dots (CQDs) have offered tremendous opportunities for a wide scope of applications due to its excellent properties like good stability and solubility in water, low cost and biocompatibility. 25,26 Tremendous promise has been shown in different applications by compositing carbon quantum dots with nanoparticles.…”

Biocompatible chitosan-modified core-shell Fe3O4 nanocomposites for exigent removal of blood lactic acid

“…According to Jia's approach, a one-step solvothermal method was used to prepare Fe 3 O 4 @Chi NCs with a certain level of magnetism, size and surface charge [18]. Briefly, 0.09 g of FeCl 3 , 0.06 g of chitosan, 0.60 g of sodium acetate trihydrate, and 0.10 g of polyvinylpyrrolidone were totally dissolved in 10 ml of ethylene glycol under vigorous stirring.…”