Preparation, characterization, and antibacterial activity of CoFe2O4/polyaniline/Ag nanocomposite

Kooti, M.; Kharazi, Parnian; Motamedi, Hossein

doi:10.1016/j.jtice.2014.04.006

Cited by 53 publications

(13 citation statements)

References 44 publications

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“…Ag NPs with a diameter less than 20 nm tend to aggregate in practical application, causing a decrease in their antimicrobial activity . In order to eliminate the aggregation of Ag NPs, a wide range of materials such as ceramics , nano fibers , polymers , magnetic materials , and activated carbon fibers have been employed. Therefore, ultra‐fine Ag NPs can be homogeneously achieved without agglomeration.…”

Section: Introductionmentioning

confidence: 99%

Core–shell fabrication of an extra‐antimicrobial magnetic agent with synergistic effect of substrate ligand to increase the antimicrobial activity of Ag nanoclusters

Mirahmadi-Zare

Allafchian

Jalali

2018

Env Prog and Sustain Energy

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In this work, a novel antimicrobial agent is synthesized. The metal‐chelating ligand EDTA is incorporated into silver nanoparticles to form a new cluster system which is enhanced in its efficacy to eliminate bacteria. Magnetic nanoparticles of Fe3O4 were layer‐by‐layer coated with aminopropyltriethoxysilane, linked‐EDTA, and silver nanoclusters (Fe3O4@APTES–EDTA@Ag), respectively. All steps of nanocomposite preparation were characterized by the TEM, field emission scanning electron microscope, X‐ray diffraction, Brunauer–Emmett–Teller, Vibrating Sample Magnetometer, and Fourier transform infrared. A sequential nucleophilic reaction applied for layer‐by‐layer fabrication of these antimicrobial units which could maintain the functionality of linked‐EDTA as EDTA chelator. The linked‐EDTA sequesters Ca2+ and Mg2+ ions effectively, thereby removing these metallic ions which are necessary for cell‐wall stability, growth, and survival of the bacteria. The antimicrobial activity of silver nanocomposite was qualified by disk diffusion method and quantified by measuring the minimum inhibitory concentration and minimum bactericidal concentration against some Gram‐positive and Gram‐negative bacteria. The results show that the mean value of inhibition zone (mm) of Fe3O4@APTES–EDTA@Ag and Ag+ against tested bacteria is significantly different by Student's T‐Test (P < 0.01). In addition, the silver‐magnetite nanocomposite lends itself to easy separation in a strong magnetic field, therefore saving time in their recovery if required. The recycling of materials which contain the precious metal silver renders operations economical, and also reduces the potential for ecotoxicity. © 2018 American Institute of Chemical Engineers Environ Prog, 38: 237–245, 2019

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Section: Introductionmentioning

confidence: 99%

Core–shell fabrication of an extra‐antimicrobial magnetic agent with synergistic effect of substrate ligand to increase the antimicrobial activity of Ag nanoclusters

Mirahmadi-Zare

Allafchian

Jalali

2018

Env Prog and Sustain Energy

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“…For over two decades, developments of organic parts integrated with magnetic nanoparticles have been reported because of their promising properties that are difficult to obtain separately with the individual components [1,2]. Many researchers have been trying to fabricate new composite materials by modifying the magnetic surface with organic molecules or inorganic parts, such as SiO 2 , PANI, APTES, caffeic acid, folic acid, etc., since such new hybrid nanostructures have significant properties due to the their unique multifunctional applications in industrial and biomedical fields [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Enhanced antibacterial performance of Fe3O4–Ag and MnFe2O4–Ag nanocomposites

et al. 2017

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In this work, we have described the antibacterial activities of Fe 3 O 4 nanoparticles with different organic parts, including Humic acid (HA), Nicotinic acid (Nico) and Histidine (His), and the antibacterial activity of MnFe 2 O 4 nanoparticles coated with PANI and SiO 2 against different bacteria and some standard antibacterial drugs. The present study revealed that the newly fabricated various Fe 3 O 4 and MnFe 2 O 4 nanocomposites, when combined with some different organic parts, are superiour antibacterial agents. Also, the synthesized nanocomposites can be easily separated from aqueous solution by magnetic filtration without any contamination of the medium.

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“…The universal spinel ferrite of Fe 3 O 4 , CoFe 2 O 4 , MnFe 2 O 4 and NiFe 2 O 4 are used as the core of nanostructure [10][11][12][13][14]. Because of the corrosion rate decreases in nano alloy ferrites (XFe 2 O 4 ), therefore, they can be more suitable than Fe 3 O 4 for industrial application i.e.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of the NiFe2O4@TEOS–TPS@Ag nanocomposite and investigation of its antibacterial activity

Allafchian

Jalali

Amiri

et al. 2016

Applied Surface Science

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In this study, the NiFe 2 O 4 was embedded in (3-mercaptopropyl) trimethoxysilane (TPS) and tetraethyl orthosilicate (TEOS) using the sol-gel method. These compounds were used as the support of Ag nanoparticles (Ag NPs). The NiFe 2 O 4 @TEOS-TPS@Ag nanocomposites were obtained with the development of bonding between the silver atoms of Ag NPs and the sulfur atoms of TPS molecule. Field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) were used for the characterization of the Ag nanocomposites. Also, the magnetic properties of these nanocomposites were studied by using a vibrating sample magnetometer (VSM) technique. The disk diffusion, minimum inhibition concentration (MIC) and minimum bactericidal concentrations (MBC) tests were used for the investigation of the antibacterial effect of this nanocomposite against bacterial strains. The synthesized nanocomposite presented high reusability and good antibacterial activity against gram-positive and gram-negative bacteria. Remarkably, this nanocomposite could be easily removed from the disinfected media by magnetic decantation.

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Preparation, characterization, and antibacterial activity of CoFe2O4/polyaniline/Ag nanocomposite

Cited by 53 publications

References 44 publications

Core–shell fabrication of an extra‐antimicrobial magnetic agent with synergistic effect of substrate ligand to increase the antimicrobial activity of Ag nanoclusters

Core–shell fabrication of an extra‐antimicrobial magnetic agent with synergistic effect of substrate ligand to increase the antimicrobial activity of Ag nanoclusters

Enhanced antibacterial performance of Fe3O4–Ag and MnFe2O4–Ag nanocomposites

Synthesis and characterization of the NiFe2O4@TEOS–TPS@Ag nanocomposite and investigation of its antibacterial activity

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