Electrochemically prepared silver nanoflakes and nanowires

Mazur, Maciej

doi:10.1016/j.elecom.2004.02.011

Cited by 154 publications

(91 citation statements)

References 36 publications

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“…The knowledge of merging nanomaterials in the area of biology and its applications is potentially revolutionizing in many fields of science and technology. Over past few decades, noble metal nanoparticles have been eliciting much area of interest to many of the researchers due to their unique optical, electronic, magnetic, mechanical and chemical properties which are extensively diverse from those of the bulk materials (Mazur 2004;Rao et al 2002). Since ancient historic period, silver salts have been used as an effective antimicrobial agent.…”

Section: Introductionmentioning

confidence: 99%

Production of putrescine-capped stable silver nanoparticle: its characterization and antibacterial activity against multidrug-resistant bacterial strains

Saha

Gupta²,

Gupta³

et al. 2016

Appl Nanosci

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Integration of biology with nanotechnology is now becoming attention-grabbing area of research. The antimicrobial potency of silver has been eminent from antiquity. Due to the recent desire for the enhancement of antibacterial efficacy of silver, various synthesis methods of silver in their nano dimensions are being practiced using a range of capping material. The present work highlights a facile biomimetic approach for production of silver nanoparticle being capped and stabilized by putrescine, possessing a diameter of 10-25 ± 1.5 nm. The synthesized nanoparticles have been analyzed spectrally and analytically. Morphological studies are carried out by high-resolution transmission electron microscopy and crystallinity by selected area electron diffraction patterns. Moreover, the elemental composition of the capped nanoparticles was confirmed by energy-dispersive X-ray spectroscopy analysis. A comparative study (zone of inhibition and minimum inhibitory concentration) regarding the interactions and antibacterial potentiality of the capped silver nanoparticles with respect to the bare ones reveal the efficiency of the capped one over the bare one. The bacterial kinetic study was executed to monitor the interference of nanoparticles with bacterial growth rate. The results also highlight the efficacy of putrescine-capped silver nanoparticles as effective growth inhibitors against multi-drug resistant human pathogenic bacterial strains, which may, thus, potentially be applicable as an effective antibacterial control system to fight diseases.

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Section: Introductionmentioning

confidence: 99%

Production of putrescine-capped stable silver nanoparticle: its characterization and antibacterial activity against multidrug-resistant bacterial strains

Saha

Gupta²,

Gupta³

et al. 2016

Appl Nanosci

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“…To realize the above applications, it is very important to develop a simple method for producing highly crystalline silver nanowires (AgNWs). Several approaches such as polyol process (Sun et al 2002a), wet chemical synthesis (Kim et al 2007), hydrothermal (Xu et al 2006), template-guided synthesis (Sun et al 2005), ultraviolet irradiation photoreduction (Zou et al 2004), and electrochemical methods (Mazur et al 2004) were used for the synthesis of AgNWs by previous researchers. Gao et.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted synthesis and characterization of silver nanowires by polyol process

et al. 2014

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Silver nanowires have been synthesized by the polyol process with ethylene glycol as a reducing agent and polyvinylpyrrolidone as a stabilizer, using microwave technique. Crystallographic, topographic, and morphological characterizations of the synthesized nanostructures have been studied via powder X-ray diffraction and electron microscopy (Field Emission Scanning Electron Microscope) and Transmission Electron Microscope, respectively. Fourier Transform-Infrared Spectroscopy, UV-Vis absorption spectroscopy, Raman spectroscopy, Thermogravometric analysis, and X-ray photoelectron spectroscopy have been carried out for the detailed quantitative and qualitative analyses. Optical characterizations of the synthesized silver nanowires have been concluded via energy-resolved and time-resolved photoluminescence and energy dispersive X-ray spectroscopic studies, respectively. Spectroscopic studies confirm the formation of good-quality silver nanowires. The X-ray photoelectron spectroscopy investigation and Raman spectra further show that the PVP molecules are adsorbed on the surface of Ag nanowires through Ag: O coordination. A possible growth mechanism of the Ag nanowires has been proposed. It is implied that the PVP molecules are used as both a protecting agent and a structure-directing agent for the growth of Ag nanowires. These studies confirm the formation of high-quality silver nanowires. Topographic and morphological studies confirm that average grain size of silver nanowires is in the nanometer range.

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“…The noble metal nanoparticles have been the subject of focused research due to their unique optical, electronic, mechanical, magnetic, and chemical properties that are significantly different from those of bulk materials [1]. Preparation of silver nanoparticles has attracted particularly considerable attention due to their diverse properties and uses, like magnetic and optical polarizability [2], electrical conductivity [3], catalysis [2], antimicrobial and antibacterial activities [4][5], DNA sequencing [6], and surface-enhanced Raman scattering (SERS) [7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Nano Ag2O and Cu(OH)2 by Solution Reduction Method and Their Antibacterial Studies

Rajakumari¹,

Priya²,

Srilekha³

2018

JNST

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Silver oxide (Ag2O) and copper(II)hydroxide (Cu(OH)2) nanoparticles were synthesized through a simple solution reduction method using silver nitrate (AgNO3) and copper sulphate pentahydrate (CuSO4.5H2O) in the presence of sodium hydroxide (NaOH) as reducing agent. X-ray diffraction (XRD) analysis, scanning electron microscopic (SEM) analysis, Fourier transform infrared spectroscopic (FT-IR) analysis, UV-absorption and photoluminescence (PL), vibrating sample magnetometer (VSM) studies were performed to confirm the size distribution measurement, surface morphology, optical and magnetic properties of the synthesized samples. Silver nanoparticles synthesized in the form of Ag2O and copper in the form of Cu(OH)2 was confirmed by the XRD study. The UV-Vis absorption analysis indicates that the absorption peak for Ag2O in the lower wavelength region of the optical spectrum. The sharp intensity peaks in the FTIR spectrum of Ag2O and Cu(OH)2 indicate the stretching and bending frequencies of the molecular functional groups in the samples as well as their high crystalline nature. The SEM images show the shape of Ag2O nanoparticles is nearly spheroid. The VSM study of Cu(OH)2 shows ferromagnetic interaction at room temperature. The antibacterial properties of Ag2O and Cu(OH)2 on Staphylococcus aureus and Escherichia coli indicate that both the samples are effective on Staphylococcus aureus, which is concentration dependent.

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Electrochemically prepared silver nanoflakes and nanowires

Cited by 154 publications

References 36 publications

Production of putrescine-capped stable silver nanoparticle: its characterization and antibacterial activity against multidrug-resistant bacterial strains

Production of putrescine-capped stable silver nanoparticle: its characterization and antibacterial activity against multidrug-resistant bacterial strains

Microwave-assisted synthesis and characterization of silver nanowires by polyol process

Synthesis and Characterization of Nano Ag2O and Cu(OH)2 by Solution Reduction Method and Their Antibacterial Studies

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