Novel Microwave-Assisted Synthesis of Renewable-Resource Based Carbon-Magnetite Nanocomposites

Finlay, Chris; Gunawan, Gunawan; Biris, Alexandru S.; Bourdo, Shawn E.; Kunets, Vasyl P.; Salamo, Greg; Viswanathan, Tito

doi:10.1080/02773813.2012.659320

Cited by 2 publications

(3 citation statements)

References 24 publications

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“…Herrera-Becerra et al [92] have also demonstrated tannin mediated biosynthesis of iron oxide nanoparticles. In a recent study, magnetic carbon-iron oxide nanoparticles have been synthesized using tannin in combination with a microwave-based thermolytic process [93]. The iron oxide nanoparticles generated employing this process have been found to be embedded within a carbon matrix in small nanoclusters (lees than or equal to 100 nm).…”

Section: Other Metal Nanoparticles Synthesized Using Tannic Acidmentioning

confidence: 99%

Reviewing the Tannic Acid Mediated Synthesis of Metal Nanoparticles

Ahmad

2014

Journal of Nanotechnology

135

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Metal nanoparticles harbour numerous exceptional physiochemical properties absolutely different from those of bulk metal as a function of their extremely small size and large superficial area to volume. Naked metal nanoparticles are synthesized by various physical and chemical methods. Chemical methods involving metal salt reduction in solution enjoy an extra edge over other protocols owing to their relative facileness and capability of controlling particle size along with the attribute of surface tailoring. Although chemical methods are the easiest, they are marred by the use of hazardous chemicals such as borohydrides. This has led to inclination of scientific community towards eco-friendly agents for the reduction of metal salts to form nanoparticles. Tannic acid, a plant derived polyphenolic compound, is one such agent which embodies characteristics of being harmless and environmentally friendly combined with being a good reducing and stabilizing agent. In this review, first various methods used to prepare metal nanoparticles are highlighted and further tannic acid mediated synthesis of metal nanoparticles is emphasized. This review brings forth the most recent findings on this issue.

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Section: Other Metal Nanoparticles Synthesized Using Tannic Acidmentioning

confidence: 99%

Reviewing the Tannic Acid Mediated Synthesis of Metal Nanoparticles

Ahmad

2014

Journal of Nanotechnology

135

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“…To simplify the process, an open vessel with no inert gases or evacuation was used, unlike other reports in which an evacuated quartz tube in the MW-assisted preparation of IONPs from polystyrene was used (Hojati-Talemi et al 2010). The method used in this study was inspired by a 2014 patent application using lignin and tannin as carbon sources to prepare nanotubes (Viswanathan 2014) and similar work using tannin (Finlay et al 2012). Using a modified method and sugarcane bagasse instead, we synthesized a nanocomposite comprised of two different types of nanoparticles, namely IONPs supported on carbonized cellulose nanocrystals (cCNCs) in one step.…”

Section: Microwave-assisted Heating Processmentioning

confidence: 99%

“…However, other studies displayed single-step MW carbonization processes similar to the present study, while the actual MW-assisted carbonizations were short, the preparation times were significantly longer. For example, an IONP/ sugarcane bagasse biochar involved the soaking of SB in a water solution of brominated hexadecyl trimethylammonium chloride (0.05 mol/L) and ferric sulfate (1 mol/L) for 24 h (Bai et al 2021); in an IONP/tannin bio-char composite, the IONPs were synthesized after overnight stirring, and subsequent MW carbonization of the dried precipitate (Finlay et al 2012). In the current study, the preparation was only a few hours and both nanoparticles in the composite were fabricated simultaneously from the MW step within a few minutes.…”

Section: Electron Microscopy: Tem Sem and Edxmentioning

confidence: 99%

Facile microwave-assisted preparation of Fe3O4 nanoparticles supported on carbonized cellulose nanocrystals derived from sugarcane bagasse

Mkumbuzi,

van Zyl

2024

Chem. Pap.

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Microwave energy is an efficient form of energy used to speed up the synthesis of nanoparticles. Herein, we report the use of an unmodified domestic microwave oven to prepare magnetic spherical Fe3O4 (magnetite) nanoparticles (IONPs) supported on carbonized cellulose nanocrystals, forming a nanocomposite, in an expeditious and facile one-step reaction. This was achieved using the readily available precursors of FeCl3 as an iron source, and sugarcane bagasse, using activated charcoal as a microwave absorber. The nanocomposite was characterized using Raman spectroscopy which suggested a degree of crystallinity based on a G/D ratio of 1.25. The morphology of the Fe3O4/carbonized cellulose nanocrystal nanocomposite was characterized as spherical metallic nanoparticles supported on carbonized cellulose nanocrystals using Transmission electron microscopy (TEM), SEM, and EDX, while the identity of the Fe3O4 nanoparticles was confirmed with powder XRD. Graphical Abstract

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Novel Microwave-Assisted Synthesis of Renewable-Resource Based Carbon-Magnetite Nanocomposites

Cited by 2 publications

References 24 publications

Reviewing the Tannic Acid Mediated Synthesis of Metal Nanoparticles

Reviewing the Tannic Acid Mediated Synthesis of Metal Nanoparticles

Facile microwave-assisted preparation of Fe3O4 nanoparticles supported on carbonized cellulose nanocrystals derived from sugarcane bagasse

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