Synthesis of Ag@Fe2O3 nanocomposite based on O-carboxymethylchitosan with antimicrobial activity

Demarchi, Carla Albetina; Cruz, Alexandre Bella; Ślawska‐Waniewska, A.; Nedelko, N.; Dłużewski, Piotr; Kaleta, Anna; Trzciński, Jerzy; Magro, Jacir Dal; Scapinello, Jaqueline; Rodrigues, Clóvis Antônio

doi:10.1016/j.ijbiomac.2017.08.147

Cited by 11 publications

(2 citation statements)

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“…Their fairly reversible magnetization curves show that γ-Fe 2 O 3 NPs transition to a superparamagnetic state [ 32 ]. Antibacterial testing on nanocomposites revealed good antimicrobial action against both Gram-positive and Gram-negative bacteria, as well as good activity against yeast and S. aureus resistant strain [ 33 ]. The Ag/Fe 2 O 3 -Graphene oxide (GO) nanocomposites have shown superior long-term antibacterial capabilities against bacteria (Gram-negative and Gram-positive bacteria), demonstrating their particular potential as a promising long-term biocide with minimal environmental hazard.…”

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confidence: 99%

Green Synthesis and Antibacterial Activity of Ag/Fe2O3 Nanocomposite Using Buddleja lindleyana Extract

et al. 2022

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In the study reported in this manuscript, silver/iron oxide nanocomposites (Ag/Fe2O3) were phytosynthesized using the extract of Buddleja lindleyana via a green, economical and eco-friendly strategy. The biosynthesized Ag/Fe2O3 nanocomposites were characterized using UV-Vis spectrophotometry, FTIR, XRD, TEM, DLS and SEM-EDX analyses. The particulates showed a triangular and spherical morphology having sizes between 25 and 174 nm. FTIR studies on the nanoparticles showed functional groups corresponding to organic metabolites, which reduce and stabilize the Ag/Fe2O3 nanocomposite. The antimicrobial efficacy of the phytosynthesized Ag/Fe2O3 against bacterial pathogens was assessed. In addition, Ag/Fe2O3 exhibited broad spectrum activities against B. subtilis, S. aureus, E. coli, and P. aeruginosa with inhibition zones of 23.4 ± 0.75, 22.3 ± 0.57, 20.8 ± 1.6, and 19.5 ± 0.5 mm, respectively. The Ag/Fe2O3 composites obtained showed promising antibacterial action against human bacterial pathogens (S. aureus, E. coli, B. subtilis and P. aeruginosa), making them candidates for medical applications.

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Section: Introductionmentioning

confidence: 99%

Green Synthesis and Antibacterial Activity of Ag/Fe2O3 Nanocomposite Using Buddleja lindleyana Extract

et al. 2022

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“…Heterogeneous photocatalysis is characterized by the use of semiconductor to generate electron/hole (e − /h + ) pairs that mineralize the organic molecules of dyes [6,7]. Reactive oxygen species (ROS) generated by e − /h + pairs also have antimicrobial action, enabling semiconductor materials to be used in the treatment of microorganisms resistant to antibiotic treatments [8,9].…”

Section: Introductionmentioning

confidence: 99%

Increase of antimicrobial and photocatalytic properties of silver-doped PbS obtained by sonochemical method

Neto

Oliveira

Paskocimas

et al. 2018

J Mater Sci: Mater Electron

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In this work, pure PbS powders doped with silver were obtained in the proportions of 1, 2, 4 and 8 mol% by sonochemical method. Powders were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), UV-Vis spectroscopy (UV-Vis) and EPR analysis. The photocatalytic properties were estimated by degradation of methylene blue dye. The antimicrobial properties were studied by the formation of inhibition halos against Escherichia coli and Staphylococcus aureus bacteria and Candida albicans yeast. XRD patterns show that PbS, with a cubic structure, was obtained without the formation of secondary phases. FE-SEM analysis indicates loss of the cubic aspect of PbS samples as the Ag + concentration increases and particle size reduces. The defects generated by the substitution of Pb 2+ by Ag + increase the photocatalytic activity, where PbS and P8A samples reduced by 25% and 68%, respectively, the MB concentration and significantly increased the antimicrobial activity against E. coli and S. aureus bacteria and C. albicans yeast.

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Investigation of Silver-Doped Iron Oxide Nanostructures Functionalized with Ionic Liquid for Colorimetric Sensing of Hydrogen Peroxide

et al. 2023

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Synthesis of Ag@Fe2O3 nanocomposite based on O-carboxymethylchitosan with antimicrobial activity

Cited by 11 publications

References 44 publications

Green Synthesis and Antibacterial Activity of Ag/Fe2O3 Nanocomposite Using Buddleja lindleyana Extract

Green Synthesis and Antibacterial Activity of Ag/Fe2O3 Nanocomposite Using Buddleja lindleyana Extract

Increase of antimicrobial and photocatalytic properties of silver-doped PbS obtained by sonochemical method

Investigation of Silver-Doped Iron Oxide Nanostructures Functionalized with Ionic Liquid for Colorimetric Sensing of Hydrogen Peroxide

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