Synthesis of Ag-Fe3O4 nanoparticles for degradation of methylene blue in aqueous medium

Abstract

<jats:p>Fe3O4 known as magnetite is one of the oxides of iron which plays a major role in various fields of sciences. Fe3O4 was synthesized by precipitation method using NH3.H2O, FeCl2.4H2O and FeCl3.6H2O as precursor materials. For synthesis of 5% Ag-Fe3O4, the green synthetic method was used for immobilization of Ag nanoparticles on Fe3O4 using leaves extract of Calotropis gigantea plant. The synthesized Fe3O4 and 5% Ag-Fe3O4 were employed as catalyst in degradation of methylene blue. The photo catalytic activity of Fe3O4 was remarkably enhanced by doping of Fe3O4 with Ag nanoparticles. Advanced instrumental techniques including XRD, EDX, TGA and SEM were used for characterization of synthesized particles. The immobilization of Ag on Fe3O4 enhanced the photo degradation of methylene blue from 40 to 72% at 40 °C which confirms that 5% Ag-Fe3O4 is an active catalyst for treatment of dye contaminated water. Ag-Fe3O4 exhibited almost same catalytic activity in two successive cycles.&#x0D; &#x0D; Bull. Chem. Soc. Ethiop. 2020, 34(1), 123-134. &#x0D; DOI: https://dx.doi.org/10.4314/bcse.v34i1.11</jats:p>

Preparation of Metal‐Containing Zwitterionic Fe3O4@SiO2−βPDMA Composite Systems and Catalytic Activity Studies

“…This loss is due to H 2 O molecules trapped in the crystal structure and moisture in the environment. When the literature is examined, it has been reported that a loss of approximately 8 % in mass after thermal decomposition is normal and that this loss is caused by H 2 O crystals trapped in the structure [41] . It was seen that the synthesis was successful when the results were examined.…”

“…When the literature is examined, it has been reported that a loss of approximately 8 % in mass after thermal decomposition is normal and that this loss is caused by H 2 O crystals trapped in the structure. [41] It was seen that the synthesis was successful when the results were examined. Likewise, when the TG% graphs of other particles are examined, Fe 3 O 4 @SiO 2 has a 13 % loss by mass, Fe 3 O 4 @SiO 2 À NH 2 has a 15 % loss by mass, Fe 3 O 4 @SiO 2 À Br has a 16 % loss by mass.…”

A review of Pharmaceuticals removal from water resources using magnetic iron-based nanomaterials

“…Magnetic Iron based nanomaterials include; nano zerovalent Iron Rosická & Šembera, 2011;Vecchia et al, 2009), magnetite (Fe3O4) (Saeed et al, 2020), maghemite (Fe2O3) (Aragaw and Aragaw 2021) and magnetic metal ferrites (Bao et al, 2013). Magnetic iron nanoparticles are widely used in environmental remediation because it is less or non-toxic and sustainable.…”

Comparative Optimization of Photocatalysis and Adsorption of Methylene Blue Using Aluminum Doped Magnetic Iron Oxide by Central Composite Design

“…Magnetic iron oxide is a potential photocatalyst for remediation of aqueous contaminants under ultraviolet or visible irradiation because of its outstanding catalytic activities, low production cost, and excellent optical and chemical properties. Despite its unique properties, Fe3O4 has major drawbacks attributed to its wide band gap, which is between 4 -6 eV (Saeed et al, 2020). Recently, researchers have adopted a variety of methods to reduce the wide band gap, quick recombination of electrons, and narrow range of light responses (Su et al, 2021).…”