Abstract
The synthesis of nanoparticles has become a matter of great interest in recent times due to their various advantageous properties and applications in a variety of fields. The exploitation of different plant materials for the biosynthesis of nanoparticles is considered a green technology because it does not involve any harmful chemicals. In this study, iron oxide nanoparticles (Fe3O4-NPs) were synthesized using a rapid, single step and completely green biosynthetic method by reduction of ferric chloride solution with brown seaweed (BS, Sargassum muticum) water extract containing sulphated polysaccharides as a main factor which acts as reducing agent and efficient stabilizer. The structural and properties of the Fe3O4-NPs were investigated by X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy (FESEM), energy dispersive X-ray fluorescence spectrometry (EDXRF), vibrating sample magnetometry (VSM) and transmission electron microscopy. The average particle diameter as determined by TEM was found to be 18 ± 4 nm. X-ray diffraction showed that the nanoparticles are crystalline in nature, with a cubic shape. The nanoparticles synthesized through this biosynthesis method can potentially useful in various applications.
Highlights
In recent years, novel size-dependent physicochemical properties have led to metallic iron nanoparticles of great potential in a wide range of applications, including magnetic storage media [1], ferrofluids [2], biosensors [3], catalysts [4], separation processes, and environmental remediation [5].magnetite (Fe3O4) is a common magnetic iron oxide having a cubic inverse spinel structure
The improvement of reliable, nontoxic, and eco-friendly methods for synthesis of nanoparticles is of utmost importance to expand their biomedical applications [25]
The present work focused on the development of a biosynthetic method for the production of Fe3O4-NPs using brown seaweed (Sargassum muticum) extract
Summary
Novel size-dependent physicochemical properties have led to metallic iron nanoparticles of great potential in a wide range of applications, including magnetic storage media [1], ferrofluids [2], biosensors [3], catalysts [4], separation processes, and environmental remediation [5].magnetite (Fe3O4) is a common magnetic iron oxide having a cubic inverse spinel structure. Novel size-dependent physicochemical properties have led to metallic iron nanoparticles of great potential in a wide range of applications, including magnetic storage media [1], ferrofluids [2], biosensors [3], catalysts [4], separation processes, and environmental remediation [5]. The compound exhibits unique electric and magnetic properties based upon the transfer of electrons between Fe2+ and Fe3+ in octahedral sites [6] According to their unique physical, chemical, thermal, and mechanical properties, and by having suitable surface characteristics, superparamagnetic nanoparticles offer a great potential in many biomedical applications, such as cellular therapy, tissue repair, drug delivery, magnetic resonance imaging (MRI), hyperthermia, and magnetofection [7]. Green synthesis of nanoparticles makes use of environmental friendly, non-toxic and safe reagents [14]
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