Synthesis of silver nanoparticles assisted by chitosan and its application to catalyze the reduction of 4-nitroaniline

Laghrib, F.; Ajermoun, N.; Bakasse, M.; Lahrich, S.; Mhammedi, M.A. El

doi:10.1016/j.ijbiomac.2019.05.209

Cited by 35 publications

(8 citation statements)

References 54 publications

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“…As shown in Figure . 6a, the X-ray diffractogram of the AgCSs has the characteristic peaks corresponding to the inter-planar distances of the crystalline silver. Four Bragg reflections at 2θ of AgCS1 (38.28, 44.48, 64.44, 77.25) and AgCS5 (38.23,44.25,64.11,76.95) are corresponding to the (111), ( 200), ( 220) and (311) plans, respectively.This result confirmed that the AgCSs were formed of crystalline nanostructures and possessed a face-centered cubic (fcc) lattice [18].…”

Section: Characterization Of Chitosan Silver Nano Particlessupporting

confidence: 72%

Synthesis of Chitosan Stabilized Silver Nanoparticles and Evaluation of the in vitro Antibacterial Activity Against Xanthomonas oryzae pv. oryzae Causing Blight Disease of Rice

Hiền¹,

Hue²,

Duc³

et al. 2021

NST

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Bacterial blight is one of the most devastating rice diseases that cause huge economic loss worldwide. The cause of rice blight is Gram negative bacteria Xanthomonas oryzae pv. oryzae (X. oryzae pv. Oryzae). Since both silver nanoparticles and chitosan have antibacterial, antifungal and growth-stimulating effect, this work has focused on synthesizing chitosan stabilized silver nanoparticles (AgCSs) with small sizes and in vitro evaluating antibacterial activity against X. oryzae pv. oryzae bacteria. AgCSs were chemically synthesized by reducing silver nitrate by borohydride sodium in the presence of chitosan with optimization of the concentration of the reactants. AgCSs were characterized by UV/vis absorption spectra, field emission scanning electronic microscopy (FESEM), ImageJ software, zeta potential measurement, Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction. AgCSs have spherical configuration and narrow size distributions with different average sizes from 15 nm to 25 nm depending on the initial concentration of silver nitrate. All AgCSs colloidal systems were stable and exhibited no tendency for coagulation more than 5 months. It was the first time that chitosan-stabilized silver nanoparticles were assessed the in vitro antibacterial activity against bacterial blight VXO_281 strain. The disc diffusion method demonstrated that the smallest size silver nanoparticles (AgCS1) showed high antibacterial effect against the X. oryzae pv. oryzae VXO_281 strain with a concentration of more than 5 µg/mL and the inhibition zone was dose-dependent. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of AgCS1 against X. oryzae pv. oryzae VXO_281 were 2.5 µg/mL and 20 µg/mL, respectively.

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Section: Characterization Of Chitosan Silver Nano Particlessupporting

confidence: 72%

Synthesis of Chitosan Stabilized Silver Nanoparticles and Evaluation of the in vitro Antibacterial Activity Against Xanthomonas oryzae pv. oryzae Causing Blight Disease of Rice

Hiền¹,

Hue²,

Duc³

et al. 2021

NST

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“…Furthermore, they are also interesting as interfacial materials (electron transporting layers), not only in organic solar cells but also in perovskite solar cells [26,27]. Silver nanoparticles (Ag-NPs) and their composites are very interesting for photonic, as well as biological and medical, applications [28][29][30][31][32][33][34][35][36][37]. The properties of Ag-NPs are significantly different from those of bulk metals.…”

Section: Materials and Layer Preparationmentioning

confidence: 99%

Hybrid Layers of Donor-Acceptor Copolymers with Homogenous Silver Nanoparticle Coverage for Photonic Applications

et al. 2021

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Hybrid layers of donor-acceptor (D-A) copolymers containing N,N′-dialkylperylene-3,4,9,10-tetracarboxydiimide electron-acceptor units covered with silver nanoparticles (Ag-NPs) were prepared by electrochemical doping of pristine layers during reduction processes. In situ optical absorption spectra of the layers were recorded during the formation of Ag-NP coverage. The hybrid layers were characterized by absorption spectroscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray spectroscopy (EDX). In the absorption spectra of the hybrid layers, a surface plasmon band characteristic of Ag-NPs appeared. Significant improvements in light absorption due to the plasmonic effects of Ag NPs were observed. Stable Ag-NPs with an average diameter of 41–63 nm were formed on the surface, as proven by SEM and XPS. The Ag-NP coverage and size depended on the hybrid layer preparation conditions and on the copolymer composition. The metallic character of the Ag-NPs was proven by XPS. The location in the surface layer was further confirmed by EDX analysis. To the best of our knowledge, this is the first report on such hybrid layers having the potential for a variety of photonic and electronic applications.

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“…Many methods for the synthesis of silver nanoparticles have been described, chemically, physically and biologically . Their synthesis often includes a stabilization process in the presence of surfactants, hydrogels or polymers such as chitosan, which is a biopolymer, used as useful adsorbent in wastewater treatment . In recent years has received considerable attention in the determination of aromatic nitrocompounds and pharmaceutical compounds …”

Section: Introductionmentioning

confidence: 99%

Synthesis of Silver Nanoparticles Using Chitosan as Stabilizer Agent: Application towards Electrocatalytical Reduction of p‐Nitrophenol

et al. 2020

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In this paper, a simple chemical method is reported for the synthesis of silver nanoparticles using β-1,4 poly D-glucosamine as stabilizer agent and their application towards electrocatalytical determination of p-nitrophenol (p-NP). The formation of β-1,4 poly D-glucosamine capped silver nanoparticles was confirmed using UV-Vis spectroscopy, Scanning Electronic Microscopy (SEM), and Fourier Transform Infrared (FTIR) spectroscopy. The electrocatalytic activity of the β-1,4 poly Dglucosamine capped silver nanoparticles modified graphite carbon electrode (β 1,4 p-DGA-AgNPs/GrCE) towards p-NP was studied using cyclic voltammetry (CV), AC electrochemical impedance spectroscopy (EIS), and amperometric (i-t) studies. Typically, the obtained results were compared with those for unmodified graphite carbon. The results clearly reveal that the end prepared sensor has high electrocatalytic activity for p-NP reduction. From the DPV results, (β 1,4 p-DGA-AgNPs/GrCE) was concluded as viable sensor for the electrochemical determination of p-NP in a linear range from 1.0 × 10 À 6 to 1.0 × 10 À 4 mol L À 1 . The minimum calculated concentration that can be detected by the proposed electrode is 6.0 × 10 À 7 mol L À 1 in terms of the detection limit ((3 × σ)/P).

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Synthesis of silver nanoparticles assisted by chitosan and its application to catalyze the reduction of 4-nitroaniline

Cited by 35 publications

References 54 publications

Synthesis of Chitosan Stabilized Silver Nanoparticles and Evaluation of the in vitro Antibacterial Activity Against Xanthomonas oryzae pv. oryzae Causing Blight Disease of Rice

Synthesis of Chitosan Stabilized Silver Nanoparticles and Evaluation of the in vitro Antibacterial Activity Against Xanthomonas oryzae pv. oryzae Causing Blight Disease of Rice

Hybrid Layers of Donor-Acceptor Copolymers with Homogenous Silver Nanoparticle Coverage for Photonic Applications

Synthesis of Silver Nanoparticles Using Chitosan as Stabilizer Agent: Application towards Electrocatalytical Reduction of p‐Nitrophenol

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